---
title: Migrate from Oxlint
description: Move from standalone Oxlint to Ultracite so speed-focused projects gain shared presets, editor defaults, and a cleaner rollout path.
---

If you're already using Oxlint and want to switch to Ultracite's preconfigured setup, this guide will help you migrate while preserving your code quality standards.

## Why Migrate to Ultracite?

- **Zero Configuration**: Ultracite provides a highly configured preset of rules
- **Editor Integration**: Built-in support for AI-powered editors (Cursor, Windsurf, GitHub Copilot)
- **Consistent Workflow**: Standardized setup across projects and teams
- **Additional Tooling**: Optional Git hooks, lint-staged integration
- **Maintained Rules**: Regular updates with new best practices

## Before You Start

Make sure you have:

- An existing project using Oxlint
- Node.js 20+
- An Oxlint configuration file (e.g., `oxlint.config.ts`)

## Migration Options

### Option 1: Quick Migration (Recommended)

The fastest way is to run the [automatic setup script](/docs/setup#installation).

```package-install
npx ultracite init
```

When prompted, select **Oxlint** as your linting provider. This will:

- Install Ultracite as a dependency
- Merge your existing `oxlint.config.ts` with Ultracite's preset
- Create an `oxfmt.config.ts` for formatting configuration
- Merge your existing `.vscode/settings.json` with Ultracite's preset
- Enable `strictNullChecks` in your existing `tsconfig.json` files (skipped if your project has none)
- Preserve your custom rules and settings
- Set up editor integrations

Following the upgrade, you may want to review your `oxlint.config.ts` file to remove any overrides that are now handled by Ultracite's preset.

### Option 2: Manual Migration

If you prefer more control over the process, create an `oxlint.config.ts` that extends Ultracite:

```ts title="oxlint.config.ts"
import { defineConfig } from "oxlint";

import core from "ultracite/oxlint/core";

export default defineConfig({
  extends: [core],
  ignorePatterns: core.ignorePatterns,
});
```

Then create an `oxfmt.config.ts` that imports Ultracite's formatting preset:

```ts title="oxfmt.config.ts"
import { defineConfig } from "oxfmt";
import ultracite from "ultracite/oxfmt";

export default defineConfig({
  ...ultracite,
});
```

After the migration, restart your editor to ensure the new configuration is applied.