diff --git a/Cargo.lock b/Cargo.lock
index f6fd46fbfecbf8..2f94694cc505f5 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2336,6 +2336,7 @@ dependencies = [
  "ruff_source_file",
  "ruff_text_size",
  "rustc-hash",
+ "schemars",
  "serde",
  "serde_json",
  "similar",
@@ -2523,7 +2524,9 @@ dependencies = [
  "ruff_formatter",
  "ruff_linter",
  "ruff_macros",
+ "ruff_python_ast",
  "ruff_python_formatter",
+ "ruff_source_file",
  "rustc-hash",
  "schemars",
  "serde",
diff --git a/crates/ruff_cli/src/commands/format.rs b/crates/ruff_cli/src/commands/format.rs
index 1cf389062e2780..a8a353e670d6ce 100644
--- a/crates/ruff_cli/src/commands/format.rs
+++ b/crates/ruff_cli/src/commands/format.rs
@@ -15,9 +15,9 @@ use ruff_linter::fs;
 use ruff_linter::logging::LogLevel;
 use ruff_linter::warn_user_once;
 use ruff_python_ast::{PySourceType, SourceType};
-use ruff_python_formatter::{format_module, FormatModuleError, PyFormatOptions};
-use ruff_source_file::{find_newline, LineEnding};
+use ruff_python_formatter::{format_module, FormatModuleError};
 use ruff_workspace::resolver::python_files_in_path;
+use ruff_workspace::FormatterSettings;
 
 use crate::args::{CliOverrides, FormatArguments};
 use crate::panic::{catch_unwind, PanicError};
@@ -73,15 +73,17 @@ pub(crate) fn format(
                     };
 
                     let resolved_settings = resolver.resolve(path, &pyproject_config);
-                    let options = resolved_settings.formatter.to_format_options(source_type);
-                    debug!("Formatting {} with {:?}", path.display(), options);
 
-                    Some(match catch_unwind(|| format_path(path, options, mode)) {
-                        Ok(inner) => inner,
-                        Err(error) => {
-                            Err(FormatCommandError::Panic(Some(path.to_path_buf()), error))
-                        }
-                    })
+                    Some(
+                        match catch_unwind(|| {
+                            format_path(path, &resolved_settings.formatter, source_type, mode)
+                        }) {
+                            Ok(inner) => inner,
+                            Err(error) => {
+                                Err(FormatCommandError::Panic(Some(path.to_path_buf()), error))
+                            }
+                        },
+                    )
                 }
                 Err(err) => Some(Err(FormatCommandError::Ignore(err))),
             }
@@ -139,19 +141,15 @@ pub(crate) fn format(
 #[tracing::instrument(skip_all, fields(path = %path.display()))]
 fn format_path(
     path: &Path,
-    options: PyFormatOptions,
+    settings: &FormatterSettings,
+    source_type: PySourceType,
     mode: FormatMode,
 ) -> Result<FormatCommandResult, FormatCommandError> {
     let unformatted = std::fs::read_to_string(path)
         .map_err(|err| FormatCommandError::Read(Some(path.to_path_buf()), err))?;
 
-    let line_ending = match find_newline(&unformatted) {
-        Some((_, LineEnding::Lf)) | None => ruff_formatter::printer::LineEnding::LineFeed,
-        Some((_, LineEnding::Cr)) => ruff_formatter::printer::LineEnding::CarriageReturn,
-        Some((_, LineEnding::CrLf)) => ruff_formatter::printer::LineEnding::CarriageReturnLineFeed,
-    };
-
-    let options = options.with_line_ending(line_ending);
+    let options = settings.to_format_options(source_type, &unformatted);
+    debug!("Formatting {} with {:?}", path.display(), options);
 
     let formatted = format_module(&unformatted, options)
         .map_err(|err| FormatCommandError::FormatModule(Some(path.to_path_buf()), err))?;
diff --git a/crates/ruff_cli/src/commands/format_stdin.rs b/crates/ruff_cli/src/commands/format_stdin.rs
index f4d8a6b089e5b6..ed897a3111e200 100644
--- a/crates/ruff_cli/src/commands/format_stdin.rs
+++ b/crates/ruff_cli/src/commands/format_stdin.rs
@@ -5,8 +5,9 @@ use anyhow::Result;
 use log::warn;
 
 use ruff_python_ast::PySourceType;
-use ruff_python_formatter::{format_module, PyFormatOptions};
+use ruff_python_formatter::format_module;
 use ruff_workspace::resolver::python_file_at_path;
+use ruff_workspace::FormatterSettings;
 
 use crate::args::{CliOverrides, FormatArguments};
 use crate::commands::format::{FormatCommandError, FormatCommandResult, FormatMode};
@@ -37,12 +38,7 @@ pub(crate) fn format_stdin(cli: &FormatArguments, overrides: &CliOverrides) -> R
     // Format the file.
     let path = cli.stdin_filename.as_deref();
 
-    let options = pyproject_config
-        .settings
-        .formatter
-        .to_format_options(path.map(PySourceType::from).unwrap_or_default());
-
-    match format_source(path, options, mode) {
+    match format_source(path, &pyproject_config.settings.formatter, mode) {
         Ok(result) => match mode {
             FormatMode::Write => Ok(ExitStatus::Success),
             FormatMode::Check => {
@@ -63,11 +59,17 @@ pub(crate) fn format_stdin(cli: &FormatArguments, overrides: &CliOverrides) -> R
 /// Format source code read from `stdin`.
 fn format_source(
     path: Option<&Path>,
-    options: PyFormatOptions,
+    settings: &FormatterSettings,
     mode: FormatMode,
 ) -> Result<FormatCommandResult, FormatCommandError> {
     let unformatted = read_from_stdin()
         .map_err(|err| FormatCommandError::Read(path.map(Path::to_path_buf), err))?;
+
+    let options = settings.to_format_options(
+        path.map(PySourceType::from).unwrap_or_default(),
+        &unformatted,
+    );
+
     let formatted = format_module(&unformatted, options)
         .map_err(|err| FormatCommandError::FormatModule(path.map(Path::to_path_buf), err))?;
     let formatted = formatted.as_code();
diff --git a/crates/ruff_cli/tests/format.rs b/crates/ruff_cli/tests/format.rs
new file mode 100644
index 00000000000000..c51a521816f1b9
--- /dev/null
+++ b/crates/ruff_cli/tests/format.rs
@@ -0,0 +1,207 @@
+#![cfg(not(target_family = "wasm"))]
+
+use std::fs;
+use std::process::Command;
+use std::str;
+
+use anyhow::Result;
+use insta_cmd::{assert_cmd_snapshot, get_cargo_bin};
+use tempfile::TempDir;
+
+const BIN_NAME: &str = "ruff";
+
+#[test]
+fn default_options() {
+    assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
+        .args(["format", "--isolated"])
+        .arg("-")
+        .pass_stdin(r#"
+def foo(arg1, arg2,):
+    print('Should\'t change quotes')
+
+
+if condition:
+
+    print('Hy "Micha"') # Should not change quotes
+
+"#), @r###"
+    success: true
+    exit_code: 0
+    ----- stdout -----
+    def foo(
+        arg1,
+        arg2,
+    ):
+        print("Should't change quotes")
+
+
+    if condition:
+        print('Hy "Micha"')  # Should not change quotes
+
+    ----- stderr -----
+    warning: `ruff format` is a work-in-progress, subject to change at any time, and intended only for experimentation.
+    "###);
+}
+
+#[test]
+fn format_options() -> Result<()> {
+    let tempdir = TempDir::new()?;
+    let ruff_toml = tempdir.path().join("ruff.toml");
+    fs::write(
+        &ruff_toml,
+        r#"
+[format]
+indent-style = "tab"
+quote-style = "single"
+skip-magic-trailing-comma = true
+line-ending = "cr-lf"
+"#,
+    )?;
+
+    assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
+        .args(["format", "--config"])
+        .arg(&ruff_toml)
+        .arg("-")
+        .pass_stdin(r#"
+def foo(arg1, arg2,):
+    print("Shouldn't change quotes")
+
+
+if condition:
+
+    print("Should change quotes")
+
+"#), @r###"
+    success: true
+    exit_code: 0
+    ----- stdout -----
+    def foo(arg1, arg2):
+    	print("Shouldn't change quotes")
+
+
+    if condition:
+    	print('Should change quotes')
+
+    ----- stderr -----
+    warning: `ruff format` is a work-in-progress, subject to change at any time, and intended only for experimentation.
+    "###);
+    Ok(())
+}
+
+#[test]
+fn format_option_inheritance() -> Result<()> {
+    let tempdir = TempDir::new()?;
+    let ruff_toml = tempdir.path().join("ruff.toml");
+    let base_toml = tempdir.path().join("base.toml");
+    fs::write(
+        &ruff_toml,
+        r#"
+extend = "base.toml"
+
+[format]
+quote-style = "single"
+"#,
+    )?;
+
+    fs::write(
+        base_toml,
+        r#"
+[format]
+indent-style = "tab"
+"#,
+    )?;
+
+    assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
+        .args(["format", "--config"])
+        .arg(&ruff_toml)
+        .arg("-")
+        .pass_stdin(r#"
+def foo(arg1, arg2,):
+    print("Shouldn't change quotes")
+
+
+if condition:
+
+    print("Should change quotes")
+
+"#), @r###"
+    success: true
+    exit_code: 0
+    ----- stdout -----
+    def foo(
+    	arg1,
+    	arg2,
+    ):
+    	print("Shouldn't change quotes")
+
+
+    if condition:
+    	print('Should change quotes')
+
+    ----- stderr -----
+    warning: `ruff format` is a work-in-progress, subject to change at any time, and intended only for experimentation.
+    "###);
+    Ok(())
+}
+
+/// Tests that the legacy `format` option continues to work but emits a warning.
+#[test]
+fn legacy_format_option() -> Result<()> {
+    let tempdir = TempDir::new()?;
+    let ruff_toml = tempdir.path().join("ruff.toml");
+    fs::write(
+        &ruff_toml,
+        r#"
+format = "json"
+"#,
+    )?;
+
+    assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
+        .args(["check", "--select", "F401", "--no-cache", "--config"])
+        .arg(&ruff_toml)
+        .arg("-")
+        .pass_stdin(r#"
+import os
+"#), @r###"
+    success: false
+    exit_code: 1
+    ----- stdout -----
+    [
+      {
+        "code": "F401",
+        "end_location": {
+          "column": 10,
+          "row": 2
+        },
+        "filename": "-",
+        "fix": {
+          "applicability": "Automatic",
+          "edits": [
+            {
+              "content": "",
+              "end_location": {
+                "column": 1,
+                "row": 3
+              },
+              "location": {
+                "column": 1,
+                "row": 2
+              }
+            }
+          ],
+          "message": "Remove unused import: `os`"
+        },
+        "location": {
+          "column": 8,
+          "row": 2
+        },
+        "message": "`os` imported but unused",
+        "noqa_row": 2,
+        "url": "https://docs.astral.sh/ruff/rules/unused-import"
+      }
+    ]
+    ----- stderr -----
+    warning: The option `format` has been deprecated to avoid ambiguity with Ruff's upcoming formatter. Use `output-format` instead.
+    "###);
+    Ok(())
+}
diff --git a/crates/ruff_formatter/src/lib.rs b/crates/ruff_formatter/src/lib.rs
index 63c4a5a6042a2c..6cd63f3e7c387c 100644
--- a/crates/ruff_formatter/src/lib.rs
+++ b/crates/ruff_formatter/src/lib.rs
@@ -55,7 +55,11 @@ use ruff_macros::CacheKey;
 use ruff_text_size::{TextRange, TextSize};
 
 #[derive(Debug, Eq, PartialEq, Clone, Copy, Hash, CacheKey)]
-#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
+#[cfg_attr(
+    feature = "serde",
+    derive(serde::Serialize, serde::Deserialize),
+    serde(rename_all = "kebab-case")
+)]
 #[cfg_attr(feature = "schemars", derive(schemars::JsonSchema))]
 #[derive(Default)]
 pub enum IndentStyle {
diff --git a/crates/ruff_formatter/src/printer/printer_options/mod.rs b/crates/ruff_formatter/src/printer/printer_options/mod.rs
index e3fca43c2bee88..efbe850cbf22ef 100644
--- a/crates/ruff_formatter/src/printer/printer_options/mod.rs
+++ b/crates/ruff_formatter/src/printer/printer_options/mod.rs
@@ -1,5 +1,4 @@
 use crate::{FormatOptions, IndentStyle, IndentWidth, LineWidth};
-use ruff_macros::CacheKey;
 
 /// Options that affect how the [`crate::Printer`] prints the format tokens
 #[derive(Clone, Debug, Eq, PartialEq, Default)]
@@ -121,7 +120,7 @@ impl SourceMapGeneration {
     }
 }
 
-#[derive(Copy, Clone, Debug, Eq, PartialEq, Default, CacheKey)]
+#[derive(Copy, Clone, Debug, Eq, PartialEq, Default)]
 #[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 pub enum LineEnding {
     ///  Line Feed only (\n), common on Linux and macOS as well as inside git repos
diff --git a/crates/ruff_python_formatter/Cargo.toml b/crates/ruff_python_formatter/Cargo.toml
index 639e350d1f6d3b..75782a5d25ba8f 100644
--- a/crates/ruff_python_formatter/Cargo.toml
+++ b/crates/ruff_python_formatter/Cargo.toml
@@ -30,6 +30,7 @@ memchr = { workspace = true }
 once_cell = { workspace = true }
 rustc-hash = { workspace = true }
 serde = { workspace = true, optional = true }
+schemars = { workspace = true, optional = true }
 smallvec = { workspace = true }
 static_assertions = { workspace = true }
 thiserror = { workspace = true }
@@ -52,4 +53,5 @@ required-features = ["serde"]
 
 [features]
 serde = ["dep:serde", "ruff_formatter/serde", "ruff_source_file/serde", "ruff_python_ast/serde"]
-default = ["serde"]
+schemars = ["dep:schemars", "ruff_formatter/schemars"]
+default = []
diff --git a/crates/ruff_python_formatter/resources/test/fixtures/ruff/docstring.options.json b/crates/ruff_python_formatter/resources/test/fixtures/ruff/docstring.options.json
index 0e595f5597d92e..28553e727b70fa 100644
--- a/crates/ruff_python_formatter/resources/test/fixtures/ruff/docstring.options.json
+++ b/crates/ruff_python_formatter/resources/test/fixtures/ruff/docstring.options.json
@@ -1,18 +1,18 @@
 [
   {
-    "indent_style": "Space",
+    "indent_style": "space",
     "indent_width": 4
   },
   {
-    "indent_style": "Space",
+    "indent_style": "space",
     "indent_width": 2
   },
   {
-    "indent_style": "Tab",
+    "indent_style": "tab",
     "indent_width": 8
   },
   {
-    "indent_style": "Tab",
+    "indent_style": "tab",
     "indent_width": 4
   }
 ]
diff --git a/crates/ruff_python_formatter/resources/test/fixtures/ruff/fmt_on_off/fmt_off_docstring.options.json b/crates/ruff_python_formatter/resources/test/fixtures/ruff/fmt_on_off/fmt_off_docstring.options.json
index 3bcc422e22fa03..5545f7eb218272 100644
--- a/crates/ruff_python_formatter/resources/test/fixtures/ruff/fmt_on_off/fmt_off_docstring.options.json
+++ b/crates/ruff_python_formatter/resources/test/fixtures/ruff/fmt_on_off/fmt_off_docstring.options.json
@@ -1,10 +1,10 @@
 [
   {
-    "indent_style": "Space",
+    "indent_style": "space",
     "indent_width": 4
   },
   {
-    "indent_style": "Space",
+    "indent_style": "space",
     "indent_width": 2
   }
 ]
diff --git a/crates/ruff_python_formatter/resources/test/fixtures/ruff/fmt_on_off/indent.options.json b/crates/ruff_python_formatter/resources/test/fixtures/ruff/fmt_on_off/indent.options.json
index ae4c01b2503abe..fbfb763c1aab05 100644
--- a/crates/ruff_python_formatter/resources/test/fixtures/ruff/fmt_on_off/indent.options.json
+++ b/crates/ruff_python_formatter/resources/test/fixtures/ruff/fmt_on_off/indent.options.json
@@ -1,13 +1,13 @@
 [
   {
-    "indent_style": "Space",
+    "indent_style": "space",
     "indent_width": 4
   },
   {
-    "indent_style": "Space",
+    "indent_style": "space",
     "indent_width": 1
   },
   {
-    "indent_style": "Tab"
+    "indent_style": "tab"
   }
 ]
diff --git a/crates/ruff_python_formatter/resources/test/fixtures/ruff/fmt_on_off/mixed_space_and_tab.options.json b/crates/ruff_python_formatter/resources/test/fixtures/ruff/fmt_on_off/mixed_space_and_tab.options.json
index 769ca99e8784f1..6384a00fe76459 100644
--- a/crates/ruff_python_formatter/resources/test/fixtures/ruff/fmt_on_off/mixed_space_and_tab.options.json
+++ b/crates/ruff_python_formatter/resources/test/fixtures/ruff/fmt_on_off/mixed_space_and_tab.options.json
@@ -1,13 +1,13 @@
 [
   {
-    "indent_style": "Space",
+    "indent_style": "space",
     "indent_width": 4
   },
   {
-    "indent_style": "Space",
+    "indent_style": "space",
     "indent_width": 2
   },
   {
-    "indent_style": "Tab"
+    "indent_style": "tab"
   }
 ]
diff --git a/crates/ruff_python_formatter/src/lib.rs b/crates/ruff_python_formatter/src/lib.rs
index 09d3a07d7858f4..5ba8e3dde02789 100644
--- a/crates/ruff_python_formatter/src/lib.rs
+++ b/crates/ruff_python_formatter/src/lib.rs
@@ -17,7 +17,6 @@ use crate::comments::{
 pub use crate::context::PyFormatContext;
 pub use crate::options::{MagicTrailingComma, PreviewMode, PyFormatOptions, QuoteStyle};
 use crate::verbatim::suppressed_node;
-pub use settings::FormatterSettings;
 
 pub(crate) mod builders;
 pub mod cli;
@@ -30,7 +29,6 @@ mod options;
 pub(crate) mod other;
 pub(crate) mod pattern;
 mod prelude;
-mod settings;
 pub(crate) mod statement;
 pub(crate) mod type_param;
 mod verbatim;
diff --git a/crates/ruff_python_formatter/src/options.rs b/crates/ruff_python_formatter/src/options.rs
index 7d0ae3d0b218f3..c6eec75310ccf4 100644
--- a/crates/ruff_python_formatter/src/options.rs
+++ b/crates/ruff_python_formatter/src/options.rs
@@ -5,8 +5,8 @@ use ruff_python_ast::PySourceType;
 use std::path::Path;
 use std::str::FromStr;
 
-/// Resolved options for formatting one individual file. This is different from [`crate::FormatterSettings`] which
-/// represents the formatting settings for multiple files (the whole project, a subdirectory, ...)
+/// Resolved options for formatting one individual file. The difference to `FormatterSettings`
+/// is that `FormatterSettings` stores the settings for multiple files (the entire project, a subdirectory, ..)
 #[derive(Clone, Debug)]
 #[cfg_attr(
     feature = "serde",
@@ -185,6 +185,7 @@ impl FormatOptions for PyFormatOptions {
     derive(serde::Serialize, serde::Deserialize),
     serde(rename_all = "kebab-case")
 )]
+#[cfg_attr(feature = "schemars", derive(schemars::JsonSchema))]
 pub enum QuoteStyle {
     Single,
     #[default]
diff --git a/crates/ruff_python_formatter/src/settings.rs b/crates/ruff_python_formatter/src/settings.rs
deleted file mode 100644
index 4a9f42d20afe02..00000000000000
--- a/crates/ruff_python_formatter/src/settings.rs
+++ /dev/null
@@ -1,49 +0,0 @@
-use std::path::PathBuf;
-
-use ruff_formatter::{FormatOptions, IndentStyle, LineWidth};
-use ruff_macros::CacheKey;
-use ruff_python_ast::PySourceType;
-
-use crate::{MagicTrailingComma, PreviewMode, PyFormatOptions, QuoteStyle};
-
-#[derive(CacheKey, Clone, Debug)]
-pub struct FormatterSettings {
-    /// The files that are excluded from formatting (but may be linted).
-    pub exclude: Vec<PathBuf>,
-
-    pub preview: PreviewMode,
-
-    pub line_width: LineWidth,
-
-    pub indent_style: IndentStyle,
-
-    pub quote_style: QuoteStyle,
-
-    pub magic_trailing_comma: MagicTrailingComma,
-}
-
-impl FormatterSettings {
-    pub fn to_format_options(&self, source_type: PySourceType) -> PyFormatOptions {
-        PyFormatOptions::from_source_type(source_type)
-            .with_indent_style(self.indent_style)
-            .with_quote_style(self.quote_style)
-            .with_magic_trailing_comma(self.magic_trailing_comma)
-            .with_preview(self.preview)
-            .with_line_width(self.line_width)
-    }
-}
-
-impl Default for FormatterSettings {
-    fn default() -> Self {
-        let default_options = PyFormatOptions::default();
-
-        Self {
-            exclude: Vec::default(),
-            preview: PreviewMode::Disabled,
-            line_width: default_options.line_width(),
-            indent_style: default_options.indent_style(),
-            quote_style: default_options.quote_style(),
-            magic_trailing_comma: default_options.magic_trailing_comma(),
-        }
-    }
-}
diff --git a/crates/ruff_wasm/src/lib.rs b/crates/ruff_wasm/src/lib.rs
index e30407af5aab44..e3a6974e6b28cd 100644
--- a/crates/ruff_wasm/src/lib.rs
+++ b/crates/ruff_wasm/src/lib.rs
@@ -303,7 +303,7 @@ impl<'a> ParsedModule<'a> {
         // TODO(konstin): Add an options for py/pyi to the UI (2/2)
         let options = settings
             .formatter
-            .to_format_options(PySourceType::default());
+            .to_format_options(PySourceType::default(), self.source_code);
 
         format_node(
             &self.module,
diff --git a/crates/ruff_workspace/Cargo.toml b/crates/ruff_workspace/Cargo.toml
index 3be2dca20fbdbd..7cde787831b846 100644
--- a/crates/ruff_workspace/Cargo.toml
+++ b/crates/ruff_workspace/Cargo.toml
@@ -15,7 +15,9 @@ license = { workspace = true }
 [dependencies]
 ruff_linter = { path = "../ruff_linter" }
 ruff_formatter = { path = "../ruff_formatter" }
-ruff_python_formatter = { path = "../ruff_python_formatter" }
+ruff_python_formatter = { path = "../ruff_python_formatter", features = ["serde"] }
+ruff_python_ast = { path = "../ruff_python_ast" }
+ruff_source_file = { path = "../ruff_source_file" }
 ruff_cache = { path = "../ruff_cache" }
 ruff_macros = { path = "../ruff_macros" }
 
@@ -43,4 +45,6 @@ tempfile = "3.6.0"
 
 
 [features]
-schemars = [ "dep:schemars" ]
+schemars = [ "dep:schemars", "ruff_formatter/schemars", "ruff_python_formatter/schemars" ]
+
+default = []
diff --git a/crates/ruff_workspace/src/configuration.rs b/crates/ruff_workspace/src/configuration.rs
index 849f4d6406a6db..3ea2bf9e1cfd59 100644
--- a/crates/ruff_workspace/src/configuration.rs
+++ b/crates/ruff_workspace/src/configuration.rs
@@ -16,7 +16,7 @@ use shellexpand::LookupError;
 use strum::IntoEnumIterator;
 
 use ruff_cache::cache_dir;
-use ruff_formatter::LineWidth;
+use ruff_formatter::{IndentStyle, LineWidth};
 use ruff_linter::line_width::{LineLength, TabSize};
 use ruff_linter::registry::RuleNamespace;
 use ruff_linter::registry::{Rule, RuleSet, INCOMPATIBLE_CODES};
@@ -32,17 +32,20 @@ use ruff_linter::settings::{
 use ruff_linter::{
     fs, warn_user, warn_user_once, warn_user_once_by_id, RuleSelector, RUFF_PKG_VERSION,
 };
-use ruff_python_formatter::FormatterSettings;
+use ruff_python_formatter::{MagicTrailingComma, QuoteStyle};
 
 use crate::options::{
     Flake8AnnotationsOptions, Flake8BanditOptions, Flake8BugbearOptions, Flake8BuiltinsOptions,
     Flake8ComprehensionsOptions, Flake8CopyrightOptions, Flake8ErrMsgOptions, Flake8GetTextOptions,
     Flake8ImplicitStrConcatOptions, Flake8ImportConventionsOptions, Flake8PytestStyleOptions,
     Flake8QuotesOptions, Flake8SelfOptions, Flake8TidyImportsOptions, Flake8TypeCheckingOptions,
-    Flake8UnusedArgumentsOptions, IsortOptions, McCabeOptions, Options, Pep8NamingOptions,
-    PyUpgradeOptions, PycodestyleOptions, PydocstyleOptions, PyflakesOptions, PylintOptions,
+    Flake8UnusedArgumentsOptions, FormatOptions, FormatOrOutputFormat, IsortOptions, McCabeOptions,
+    Options, Pep8NamingOptions, PyUpgradeOptions, PycodestyleOptions, PydocstyleOptions,
+    PyflakesOptions, PylintOptions,
+};
+use crate::settings::{
+    FileResolverSettings, FormatterSettings, LineEnding, Settings, EXCLUDE, INCLUDE,
 };
-use crate::settings::{FileResolverSettings, Settings, EXCLUDE, INCLUDE};
 
 #[derive(Debug, Default)]
 pub struct RuleSelection {
@@ -113,6 +116,8 @@ pub struct Configuration {
     pub pyflakes: Option<PyflakesOptions>,
     pub pylint: Option<PylintOptions>,
     pub pyupgrade: Option<PyUpgradeOptions>,
+
+    pub format: Option<FormatConfiguration>,
 }
 
 impl Configuration {
@@ -129,6 +134,31 @@ impl Configuration {
 
         let target_version = self.target_version.unwrap_or_default();
         let rules = self.as_rule_table();
+        let preview = self.preview.unwrap_or_default();
+
+        let formatter = if let Some(format) = self.format {
+            let default = FormatterSettings::default();
+
+            // TODO(micha): Support changing the tab-width but disallow changing the number of spaces
+            FormatterSettings {
+                exclude: FilePatternSet::try_from_iter(format.exclude.unwrap_or_default())?,
+                preview: match format.preview.unwrap_or(preview) {
+                    PreviewMode::Disabled => ruff_python_formatter::PreviewMode::Disabled,
+                    PreviewMode::Enabled => ruff_python_formatter::PreviewMode::Enabled,
+                },
+                line_width: self.line_length.map_or(default.line_width, |length| {
+                    LineWidth::from(NonZeroU16::from(length))
+                }),
+                line_ending: format.line_ending.unwrap_or(default.line_ending),
+                indent_style: format.indent_style.unwrap_or(default.indent_style),
+                quote_style: format.quote_style.unwrap_or(default.quote_style),
+                magic_trailing_comma: format
+                    .magic_trailing_comma
+                    .unwrap_or(default.magic_trailing_comma),
+            }
+        } else {
+            FormatterSettings::default()
+        };
 
         Ok(Settings {
             cache_dir: self
@@ -185,7 +215,7 @@ impl Configuration {
                     .task_tags
                     .unwrap_or_else(|| TASK_TAGS.iter().map(ToString::to_string).collect()),
                 logger_objects: self.logger_objects.unwrap_or_default(),
-                preview: self.preview.unwrap_or_default(),
+                preview,
                 typing_modules: self.typing_modules.unwrap_or_default(),
                 // Plugins
                 flake8_annotations: self
@@ -290,18 +320,7 @@ impl Configuration {
                     .unwrap_or_default(),
             },
 
-            formatter: FormatterSettings {
-                exclude: vec![],
-                preview: self
-                    .preview
-                    .map(|preview| match preview {
-                        PreviewMode::Disabled => ruff_python_formatter::PreviewMode::Disabled,
-                        PreviewMode::Enabled => ruff_python_formatter::PreviewMode::Enabled,
-                    })
-                    .unwrap_or_default(),
-                line_width: LineWidth::from(NonZeroU16::from(self.line_length.unwrap_or_default())),
-                ..FormatterSettings::default()
-            },
+            formatter,
         })
     }
 
@@ -395,7 +414,12 @@ impl Configuration {
             external: options.external,
             fix: options.fix,
             fix_only: options.fix_only,
-            output_format: options.output_format.or(options.format),
+            output_format: options.output_format.or_else(|| {
+                options
+                    .format
+                    .as_ref()
+                    .and_then(FormatOrOutputFormat::as_output_format)
+            }),
             force_exclude: options.force_exclude,
             ignore_init_module_imports: options.ignore_init_module_imports,
             include: options.include.map(|paths| {
@@ -459,6 +483,12 @@ impl Configuration {
             pyflakes: options.pyflakes,
             pylint: options.pylint,
             pyupgrade: options.pyupgrade,
+
+            format: if let Some(FormatOrOutputFormat::Format(format)) = options.format {
+                Some(FormatConfiguration::from_options(format, project_root)?)
+            } else {
+                None
+            },
         })
     }
 
@@ -782,6 +812,67 @@ impl Configuration {
             pyflakes: self.pyflakes.combine(config.pyflakes),
             pylint: self.pylint.combine(config.pylint),
             pyupgrade: self.pyupgrade.combine(config.pyupgrade),
+
+            format: match (self.format, config.format) {
+                (Some(format), Some(other_format)) => Some(format.combine(other_format)),
+                (Some(format), None) => Some(format),
+                (None, Some(format)) => Some(format),
+                (None, None) => None,
+            },
+        }
+    }
+}
+
+#[derive(Debug, Default)]
+pub struct FormatConfiguration {
+    pub exclude: Option<Vec<FilePattern>>,
+
+    pub preview: Option<PreviewMode>,
+
+    pub indent_style: Option<IndentStyle>,
+
+    pub quote_style: Option<QuoteStyle>,
+
+    pub magic_trailing_comma: Option<MagicTrailingComma>,
+
+    pub line_ending: Option<LineEnding>,
+}
+
+impl FormatConfiguration {
+    pub fn from_options(options: FormatOptions, project_root: &Path) -> Result<Self> {
+        Ok(Self {
+            exclude: options.exclude.map(|paths| {
+                paths
+                    .into_iter()
+                    .map(|pattern| {
+                        let absolute = fs::normalize_path_to(&pattern, project_root);
+                        FilePattern::User(pattern, absolute)
+                    })
+                    .collect()
+            }),
+            preview: options.preview.map(PreviewMode::from),
+            indent_style: options.indent_style,
+            quote_style: options.quote_style,
+            magic_trailing_comma: options.skip_magic_trailing_comma.map(|skip| {
+                if skip {
+                    MagicTrailingComma::Ignore
+                } else {
+                    MagicTrailingComma::Respect
+                }
+            }),
+            line_ending: options.line_ending,
+        })
+    }
+
+    #[must_use]
+    pub fn combine(self, other: Self) -> Self {
+        Self {
+            exclude: self.exclude.or(other.exclude),
+            preview: self.preview.or(other.preview),
+            indent_style: self.indent_style.or(other.indent_style),
+            quote_style: self.quote_style.or(other.quote_style),
+            magic_trailing_comma: self.magic_trailing_comma.or(other.magic_trailing_comma),
+            line_ending: self.line_ending.or(other.line_ending),
         }
     }
 }
diff --git a/crates/ruff_workspace/src/lib.rs b/crates/ruff_workspace/src/lib.rs
index a18e151a3538da..53074296137048 100644
--- a/crates/ruff_workspace/src/lib.rs
+++ b/crates/ruff_workspace/src/lib.rs
@@ -6,7 +6,7 @@ pub mod resolver;
 pub mod options_base;
 mod settings;
 
-pub use settings::Settings;
+pub use settings::{FileResolverSettings, FormatterSettings, Settings};
 
 #[cfg(test)]
 mod tests {
diff --git a/crates/ruff_workspace/src/options.rs b/crates/ruff_workspace/src/options.rs
index d5b8ea28f024e7..c1e1e67f6b7bf1 100644
--- a/crates/ruff_workspace/src/options.rs
+++ b/crates/ruff_workspace/src/options.rs
@@ -1,4 +1,12 @@
+use std::collections::BTreeSet;
+use std::hash::BuildHasherDefault;
+
 use regex::Regex;
+use ruff_formatter::IndentStyle;
+use rustc_hash::{FxHashMap, FxHashSet};
+use serde::{Deserialize, Serialize};
+use strum::IntoEnumIterator;
+
 use ruff_linter::line_width::{LineLength, TabSize};
 use ruff_linter::rules::flake8_pytest_style::settings::SettingsError;
 use ruff_linter::rules::flake8_pytest_style::types;
@@ -19,11 +27,9 @@ use ruff_linter::settings::types::{
 };
 use ruff_linter::{warn_user_once, RuleSelector};
 use ruff_macros::{CombineOptions, ConfigurationOptions};
-use rustc_hash::{FxHashMap, FxHashSet};
-use serde::{Deserialize, Serialize};
-use std::collections::BTreeSet;
-use std::hash::BuildHasherDefault;
-use strum::IntoEnumIterator;
+use ruff_python_formatter::QuoteStyle;
+
+use crate::settings::LineEnding;
 
 #[derive(Debug, PartialEq, Eq, Default, ConfigurationOptions, Serialize, Deserialize)]
 #[serde(deny_unknown_fields, rename_all = "kebab-case")]
@@ -252,17 +258,6 @@ pub struct Options {
     )]
     pub fixable: Option<Vec<RuleSelector>>,
 
-    /// The style in which violation messages should be formatted: `"text"`
-    /// (default), `"grouped"` (group messages by file), `"json"`
-    /// (machine-readable), `"junit"` (machine-readable XML), `"github"` (GitHub
-    /// Actions annotations), `"gitlab"` (GitLab CI code quality report),
-    /// `"pylint"` (Pylint text format) or `"azure"` (Azure Pipeline logging commands).
-    ///
-    /// This option has been **deprecated** in favor of `output-format`
-    /// to avoid ambiguity with Ruff's upcoming formatter.
-    #[cfg_attr(feature = "schemars", schemars(skip))]
-    pub format: Option<SerializationFormat>,
-
     /// The style in which violation messages should be formatted: `"text"`
     /// (default), `"grouped"` (group messages by file), `"json"`
     /// (machine-readable), `"junit"` (machine-readable XML), `"github"` (GitHub
@@ -681,6 +676,20 @@ pub struct Options {
     #[option_group]
     pub pyupgrade: Option<PyUpgradeOptions>,
 
+    /// Options to configure the code formatting.
+    ///
+    /// Previously:
+    /// The style in which violation messages should be formatted: `"text"`
+    /// (default), `"grouped"` (group messages by file), `"json"`
+    /// (machine-readable), `"junit"` (machine-readable XML), `"github"` (GitHub
+    /// Actions annotations), `"gitlab"` (GitLab CI code quality report),
+    /// `"pylint"` (Pylint text format) or `"azure"` (Azure Pipeline logging commands).
+    ///
+    /// This option has been **deprecated** in favor of `output-format`
+    /// to avoid ambiguity with Ruff's upcoming formatter.
+    #[option_group]
+    pub format: Option<FormatOrOutputFormat>,
+
     // Tables are required to go last.
     /// A list of mappings from file pattern to rule codes or prefixes to
     /// exclude, when considering any matching files.
@@ -2381,11 +2390,141 @@ impl PyUpgradeOptions {
     }
 }
 
+#[derive(Debug, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(untagged)]
+#[cfg_attr(feature = "schemars", derive(schemars::JsonSchema))]
+pub enum FormatOrOutputFormat {
+    Format(FormatOptions),
+    OutputFormat(SerializationFormat),
+}
+
+impl FormatOrOutputFormat {
+    pub const fn metadata() -> crate::options_base::OptionGroup {
+        FormatOptions::metadata()
+    }
+
+    pub const fn as_output_format(&self) -> Option<SerializationFormat> {
+        match self {
+            FormatOrOutputFormat::Format(_) => None,
+            FormatOrOutputFormat::OutputFormat(format) => Some(*format),
+        }
+    }
+}
+
+#[derive(
+    Debug, PartialEq, Eq, Default, Serialize, Deserialize, ConfigurationOptions, CombineOptions,
+)]
+#[serde(deny_unknown_fields, rename_all = "kebab-case")]
+#[cfg_attr(feature = "schemars", derive(schemars::JsonSchema))]
+pub struct FormatOptions {
+    /// A list of file patterns to exclude from formatting.
+    ///
+    /// Exclusions are based on globs, and can be either:
+    ///
+    /// - Single-path patterns, like `.mypy_cache` (to exclude any directory
+    ///   named `.mypy_cache` in the tree), `foo.py` (to exclude any file named
+    ///   `foo.py`), or `foo_*.py` (to exclude any file matching `foo_*.py` ).
+    /// - Relative patterns, like `directory/foo.py` (to exclude that specific
+    ///   file) or `directory/*.py` (to exclude any Python files in
+    ///   `directory`). Note that these paths are relative to the project root
+    ///   (e.g., the directory containing your `pyproject.toml`).
+    ///
+    /// For more information on the glob syntax, refer to the [`globset` documentation](https://docs.rs/globset/latest/globset/#syntax).
+    ///
+    /// Note that you don't need to list files that are excluded by
+    /// [`exclude`](#exclude).
+    // TODO(micha): Document once the CLI supports the exclude option
+    // #[option(
+    //     default = r#"[]"#,
+    //     value_type = "list[str]",
+    //     example = r#"
+    //         [format]
+    //         exclude = ["generated"]
+    //     "#
+    // )]
+    pub exclude: Option<Vec<String>>,
+
+    /// Whether to enable the unstable preview style formatting.
+    #[option(
+        default = "false",
+        value_type = "bool",
+        example = r#"
+            [format]
+            # Enable preview style formatting
+            preview = true
+        "#
+    )]
+    pub preview: Option<bool>,
+
+    /// Whether to use 4 spaces or hard tabs for indenting code.
+    ///
+    /// Defaults to 4 spaces. We only recommend changing this option, if you need to for accessibility reasons.
+    #[option(
+        default = "space",
+        value_type = r#""space" | "tab""#,
+        example = r#"
+            [format]
+            # Use tabs instead of 4 space indentation
+            indent-style = "tab"
+        "#
+    )]
+    pub indent_style: Option<IndentStyle>,
+
+    /// Whether to prefer single `'` or double `"` quotes for strings and docstrings.
+    ///
+    /// Ruff may deviate from this option if using the configured quotes would require more escaped quotes:
+    ///
+    /// ```python
+    /// a = "It's monday morning"
+    /// b = "a string without any quotes"
+    /// ```
+    ///
+    /// Ruff leaves `a` unchanged when using `quote-style = "single"` because it is otherwise
+    /// necessary to escape the `'` which leads to less readable code: `'It\'s monday morning'`.
+    /// Ruff changes the quotes of `b` to use single quotes.
+    #[option(
+        default = r#"double"#,
+        value_type = r#""double" | "single""#,
+        example = r#"
+            [format]
+            # Prefer single quotes over double quotes
+            quote-style = "single"
+        "#
+    )]
+    pub quote_style: Option<QuoteStyle>,
+
+    /// Ruff uses existing trailing commas as an indication that short lines should be left separate.
+    /// If this option is set to `true`, the magic trailing comma is ignored.
+    #[option(
+        default = r#"false"#,
+        value_type = r#"bool"#,
+        example = r#"
+            [format]
+            # Ignore magic trailing commas
+            skip-magic-trailing-comma = true
+        "#
+    )]
+    pub skip_magic_trailing_comma: Option<bool>,
+
+    /// The character Ruff uses at the end of a line.
+    #[option(
+        default = r#"lf"#,
+        value_type = r#""lf" | "crlf" | "auto" | "native""#,
+        example = r#"
+            [format]
+            # Automatically detect the line ending on a file per file basis.
+            quote-style = "auto"
+        "#
+    )]
+    pub line_ending: Option<LineEnding>,
+}
+
 #[cfg(test)]
 mod tests {
-    use crate::options::Flake8SelfOptions;
     use ruff_linter::rules::flake8_self;
 
+    use crate::options::Flake8SelfOptions;
+
     #[test]
     fn flake8_self_options() {
         let default_settings = flake8_self::settings::Settings::default();
diff --git a/crates/ruff_workspace/src/options_base.rs b/crates/ruff_workspace/src/options_base.rs
index 10ef9f5776d812..7a91117beccecd 100644
--- a/crates/ruff_workspace/src/options_base.rs
+++ b/crates/ruff_workspace/src/options_base.rs
@@ -37,7 +37,7 @@ impl OptionGroup {
     /// ```rust
     /// # use ruff_workspace::options_base::{OptionGroup, OptionEntry, OptionField};
     ///
-    /// const options: [(&'static str, OptionEntry); 2] = [
+    /// const OPTIONS: [(&'static str, OptionEntry); 2] = [
     ///     ("ignore_names", OptionEntry::Field(OptionField {
     ///         doc: "ignore_doc",
     ///         default: "ignore_default",
@@ -53,7 +53,7 @@ impl OptionGroup {
     ///     }))
     /// ];
     ///
-    /// let group = OptionGroup::new(&options);
+    /// let group = OptionGroup::new(&OPTIONS);
     ///
     /// let ignore_names = group.get("ignore_names");
     ///
@@ -73,7 +73,7 @@ impl OptionGroup {
     /// ```rust
     /// # use ruff_workspace::options_base::{OptionGroup, OptionEntry, OptionField};
     ///
-    /// const ignore_options: [(&'static str, OptionEntry); 2] = [
+    /// const IGNORE_OPTIONS: [(&'static str, OptionEntry); 2] = [
     ///     ("names", OptionEntry::Field(OptionField {
     ///         doc: "ignore_name_doc",
     ///         default: "ignore_name_default",
@@ -89,8 +89,8 @@ impl OptionGroup {
     ///     }))
     /// ];
     ///
-    /// const options: [(&'static str, OptionEntry); 2] = [
-    ///     ("ignore", OptionEntry::Group(OptionGroup::new(&ignore_options))),
+    /// const OPTIONS: [(&'static str, OptionEntry); 2] = [
+    ///     ("ignore", OptionEntry::Group(OptionGroup::new(&IGNORE_OPTIONS))),
     ///
     ///     ("global_names", OptionEntry::Field(OptionField {
     ///         doc: "global_doc",
@@ -100,7 +100,7 @@ impl OptionGroup {
     ///     }))
     /// ];
     ///
-    /// let group = OptionGroup::new(&options);
+    /// let group = OptionGroup::new(&OPTIONS);
     ///
     /// let ignore_names = group.get("ignore.names");
     ///
diff --git a/crates/ruff_workspace/src/resolver.rs b/crates/ruff_workspace/src/resolver.rs
index 5075bb715322cd..a7d3002bd253bc 100644
--- a/crates/ruff_workspace/src/resolver.rs
+++ b/crates/ruff_workspace/src/resolver.rs
@@ -17,6 +17,7 @@ use ruff_linter::packaging::is_package;
 use ruff_linter::{fs, warn_user_once};
 
 use crate::configuration::Configuration;
+use crate::options::FormatOrOutputFormat;
 use crate::pyproject;
 use crate::pyproject::settings_toml;
 use crate::settings::Settings;
@@ -220,8 +221,8 @@ fn resolve_configuration(
         let options = pyproject::load_options(&path)
             .map_err(|err| anyhow!("Failed to parse `{}`: {}", path.display(), err))?;
 
-        if options.format.is_some() {
-            warn_user_once!("The option `format` has been deprecated to avoid ambiguity with Ruff's upcoming formatter. Use `format-output` instead.");
+        if matches!(options.format, Some(FormatOrOutputFormat::OutputFormat(_))) {
+            warn_user_once!("The option `format` has been deprecated to avoid ambiguity with Ruff's upcoming formatter. Use `output-format` instead.");
         }
 
         let project_root = relativity.resolve(&path);
diff --git a/crates/ruff_workspace/src/settings.rs b/crates/ruff_workspace/src/settings.rs
index 83c1d6ab656989..c99bb6e964bcd3 100644
--- a/crates/ruff_workspace/src/settings.rs
+++ b/crates/ruff_workspace/src/settings.rs
@@ -1,9 +1,12 @@
 use path_absolutize::path_dedot;
 use ruff_cache::cache_dir;
+use ruff_formatter::{FormatOptions, IndentStyle, LineWidth};
 use ruff_linter::settings::types::{FilePattern, FilePatternSet, SerializationFormat};
 use ruff_linter::settings::LinterSettings;
 use ruff_macros::CacheKey;
-use ruff_python_formatter::FormatterSettings;
+use ruff_python_ast::PySourceType;
+use ruff_python_formatter::{MagicTrailingComma, PreviewMode, PyFormatOptions, QuoteStyle};
+use ruff_source_file::find_newline;
 use std::path::{Path, PathBuf};
 
 #[derive(Debug, CacheKey)]
@@ -102,3 +105,92 @@ impl FileResolverSettings {
         }
     }
 }
+
+#[derive(CacheKey, Clone, Debug)]
+pub struct FormatterSettings {
+    /// The files that are excluded from formatting (but may be linted).
+    pub exclude: FilePatternSet,
+
+    pub preview: PreviewMode,
+
+    pub line_width: LineWidth,
+
+    pub indent_style: IndentStyle,
+
+    pub quote_style: QuoteStyle,
+
+    pub magic_trailing_comma: MagicTrailingComma,
+
+    pub line_ending: LineEnding,
+}
+
+impl FormatterSettings {
+    pub fn to_format_options(&self, source_type: PySourceType, source: &str) -> PyFormatOptions {
+        let line_ending = match self.line_ending {
+            LineEnding::Lf => ruff_formatter::printer::LineEnding::LineFeed,
+            LineEnding::CrLf => ruff_formatter::printer::LineEnding::CarriageReturnLineFeed,
+            #[cfg(target_os = "windows")]
+            LineEnding::Native => ruff_formatter::printer::LineEnding::CarriageReturnLineFeed,
+            #[cfg(not(target_os = "windows"))]
+            LineEnding::Native => ruff_formatter::printer::LineEnding::LineFeed,
+            LineEnding::Auto => match find_newline(source) {
+                Some((_, ruff_source_file::LineEnding::Lf)) => {
+                    ruff_formatter::printer::LineEnding::LineFeed
+                }
+                Some((_, ruff_source_file::LineEnding::CrLf)) => {
+                    ruff_formatter::printer::LineEnding::CarriageReturnLineFeed
+                }
+                Some((_, ruff_source_file::LineEnding::Cr)) => {
+                    ruff_formatter::printer::LineEnding::CarriageReturn
+                }
+                None => ruff_formatter::printer::LineEnding::LineFeed,
+            },
+        };
+
+        PyFormatOptions::from_source_type(source_type)
+            .with_indent_style(self.indent_style)
+            .with_quote_style(self.quote_style)
+            .with_magic_trailing_comma(self.magic_trailing_comma)
+            .with_preview(self.preview)
+            .with_line_ending(line_ending)
+            .with_line_width(self.line_width)
+    }
+}
+
+impl Default for FormatterSettings {
+    fn default() -> Self {
+        let default_options = PyFormatOptions::default();
+
+        Self {
+            exclude: FilePatternSet::default(),
+            preview: ruff_python_formatter::PreviewMode::Disabled,
+            line_width: default_options.line_width(),
+            line_ending: LineEnding::Lf,
+            indent_style: default_options.indent_style(),
+            quote_style: default_options.quote_style(),
+            magic_trailing_comma: default_options.magic_trailing_comma(),
+        }
+    }
+}
+
+#[derive(
+    Copy, Clone, Debug, Eq, PartialEq, Default, CacheKey, serde::Serialize, serde::Deserialize,
+)]
+#[serde(rename_all = "kebab-case")]
+#[cfg_attr(feature = "schemars", derive(schemars::JsonSchema))]
+pub enum LineEnding {
+    ///  Line endings will be converted to `\n` as is common on Unix.
+    #[default]
+    Lf,
+
+    /// Line endings will be converted to `\r\n` as is common on Windows.
+    CrLf,
+
+    /// The newline style is detected automatically on a file per file basis.
+    /// Files with mixed line endings will be converted to the first detected line ending.
+    /// Defaults to [`LineEnding::Lf`] for a files that contain no line endings.
+    Auto,
+
+    /// Line endings will be converted to `\n` on Unix and `\r\n` on Windows.
+    Native,
+}
diff --git a/ruff.schema.json b/ruff.schema.json
index bfad9f5c5eb8ed..cfe3bdc0bcca7b 100644
--- a/ruff.schema.json
+++ b/ruff.schema.json
@@ -326,6 +326,17 @@
         "null"
       ]
     },
+    "format": {
+      "description": "Options to configure the code formatting.\n\nPreviously: The style in which violation messages should be formatted: `\"text\"` (default), `\"grouped\"` (group messages by file), `\"json\"` (machine-readable), `\"junit\"` (machine-readable XML), `\"github\"` (GitHub Actions annotations), `\"gitlab\"` (GitLab CI code quality report), `\"pylint\"` (Pylint text format) or `\"azure\"` (Azure Pipeline logging commands).\n\nThis option has been **deprecated** in favor of `output-format` to avoid ambiguity with Ruff's upcoming formatter.",
+      "anyOf": [
+        {
+          "$ref": "#/definitions/FormatOrOutputFormat"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
     "ignore": {
       "description": "A list of rule codes or prefixes to ignore. Prefixes can specify exact rules (like `F841`), entire categories (like `F`), or anything in between.\n\nWhen breaking ties between enabled and disabled rules (via `select` and `ignore`, respectively), more specific prefixes override less specific prefixes.",
       "type": [
@@ -1151,6 +1162,79 @@
       },
       "additionalProperties": false
     },
+    "FormatOptions": {
+      "type": "object",
+      "properties": {
+        "exclude": {
+          "description": "A list of file patterns to exclude from formatting.\n\nExclusions are based on globs, and can be either:\n\n- Single-path patterns, like `.mypy_cache` (to exclude any directory named `.mypy_cache` in the tree), `foo.py` (to exclude any file named `foo.py`), or `foo_*.py` (to exclude any file matching `foo_*.py` ). - Relative patterns, like `directory/foo.py` (to exclude that specific file) or `directory/*.py` (to exclude any Python files in `directory`). Note that these paths are relative to the project root (e.g., the directory containing your `pyproject.toml`).\n\nFor more information on the glob syntax, refer to the [`globset` documentation](https://docs.rs/globset/latest/globset/#syntax).\n\nNote that you don't need to list files that are excluded by [`exclude`](#exclude).",
+          "type": [
+            "array",
+            "null"
+          ],
+          "items": {
+            "type": "string"
+          }
+        },
+        "indent-style": {
+          "description": "Whether to use 4 spaces or hard tabs for indenting code.\n\nDefaults to 4 spaces. We only recommend changing this option, if you need to for accessibility reasons.",
+          "anyOf": [
+            {
+              "$ref": "#/definitions/IndentStyle"
+            },
+            {
+              "type": "null"
+            }
+          ]
+        },
+        "line-ending": {
+          "description": "The character Ruff uses at the end of a line.",
+          "anyOf": [
+            {
+              "$ref": "#/definitions/LineEnding"
+            },
+            {
+              "type": "null"
+            }
+          ]
+        },
+        "preview": {
+          "description": "Whether to enable the unstable preview style formatting.",
+          "type": [
+            "boolean",
+            "null"
+          ]
+        },
+        "quote-style": {
+          "description": "Whether to prefer single `'` or double `\"` quotes for strings and docstrings.\n\nRuff may deviate from this option if using the configured quotes would require more escaped quotes:\n\n```python a = \"It's monday morning\" b = \"a string without any quotes\" ```\n\nRuff leaves `a` unchanged when using `quote-style = \"single\"` because it is otherwise necessary to escape the `'` which leads to less readable code: `'It\\'s monday morning'`. Ruff changes the quotes of `b` to use single quotes.",
+          "anyOf": [
+            {
+              "$ref": "#/definitions/QuoteStyle"
+            },
+            {
+              "type": "null"
+            }
+          ]
+        },
+        "skip-magic-trailing-comma": {
+          "description": "Ruff uses existing trailing commas as an indication that short lines should be left separate. If this option is set to `true`, the magic trailing comma is ignored.",
+          "type": [
+            "boolean",
+            "null"
+          ]
+        }
+      },
+      "additionalProperties": false
+    },
+    "FormatOrOutputFormat": {
+      "anyOf": [
+        {
+          "$ref": "#/definitions/FormatOptions"
+        },
+        {
+          "$ref": "#/definitions/SerializationFormat"
+        }
+      ]
+    },
     "ImportSection": {
       "anyOf": [
         {
@@ -1171,6 +1255,24 @@
         "local-folder"
       ]
     },
+    "IndentStyle": {
+      "oneOf": [
+        {
+          "description": "Use tabs to indent code.",
+          "type": "string",
+          "enum": [
+            "tab"
+          ]
+        },
+        {
+          "description": "Use [`IndentWidth`] spaces to indent code.",
+          "type": "string",
+          "enum": [
+            "space"
+          ]
+        }
+      ]
+    },
     "IsortOptions": {
       "type": "object",
       "properties": {
@@ -1404,6 +1506,38 @@
       },
       "additionalProperties": false
     },
+    "LineEnding": {
+      "oneOf": [
+        {
+          "description": "Line endings will be converted to `\\n` as is common on Unix.",
+          "type": "string",
+          "enum": [
+            "lf"
+          ]
+        },
+        {
+          "description": "Line endings will be converted to `\\r\\n` as is common on Windows.",
+          "type": "string",
+          "enum": [
+            "cr-lf"
+          ]
+        },
+        {
+          "description": "The newline style is detected automatically on a file per file basis. Files with mixed line endings will be converted to the first detected line ending. Defaults to [`LineEnding::Lf`] for a files that contain no line endings.",
+          "type": "string",
+          "enum": [
+            "auto"
+          ]
+        },
+        {
+          "description": "Line endings will be converted to `\\n` on Unix and `\\r\\n` on Windows.",
+          "type": "string",
+          "enum": [
+            "native"
+          ]
+        }
+      ]
+    },
     "LineLength": {
       "description": "The length of a line of text that is considered too long.\n\nThe allowed range of values is 1..=320",
       "type": "integer",
@@ -1673,6 +1807,13 @@
         }
       ]
     },
+    "QuoteStyle": {
+      "type": "string",
+      "enum": [
+        "single",
+        "double"
+      ]
+    },
     "RelativeImportsOrder": {
       "oneOf": [
         {