Code migration as-a-service.

Delegate all migrations to Codemod agents for fast, top-notch delivery with zero staffing hassle.

Optimized for open-source and trusted by thousands of progressive software teams.

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Community-led innovation

Discover hundreds of community-built recipes in the Codemod Registry.

  • React/19/Migration Recipe

    This recipe is a set of codemods that will fix some of React 19 breaking changes.

  • Nuxt/4/Migration Recipe

    This recipe is a set of codemods that will help migrate to Nuxt 4.

  • Msw/2/Upgrade Recipe

    This recipe is a set of codemods that will upgrade your project from using msw v1 to v2.

  • Pnpm/Catalog

    • Performs search across all packages in pnpm workspace.
    • If there are more than 2 packages with same dependency - it will move dependency to catalog.
    • If there are multiple versions of dependency - codemod will prompt to choose whether to move to catalog or not (in this case latest version will be picked).
    • Automatically updates version in packageManager field in package.json to 9.5.0 (if it is set and lower than 9.5.0).
    • Runs pnpm install after migration.
View all automations
Build

Build reliable codemods with AI.

Head to Codemod Studio with before/after code examples and transformation logic as comments, and let AI craft a shareable, reliable codemod. Love CLI? So do we. Create a diff, run one command!

codemod learn
Publish

Share codemods with everyone.

Publish your codemods to the Registry and instantly make them accessible to everyone who needs them: the community, your colleagues, or even future self!

codemod publish
Discover

Search for community-led codemods.

Find codemods built by colleagues or the community by running a fuzzy search in the Registry or right in the CLI.

codemod search react
Run

Run codemods with a better experience.

Whether you prefer CLI or web app, you can run or dry-run codemods with a unified and delightful experience.

npx codemod react/19/migration-recipe
Scale

Delegate migrations no matter the size.

Gain unprecedented insights into migrations and let Codemod agents deliver them faster, with high quality and no staffing hassle.

Contact

An end-to-end platform for code migrations at scale.

Innovate fearlessly, no matter the code size! Automate framework migrations, API upgrades, cleanups, refactors, and more.

Shipping love, faster.

Codemod users have saved over hundred years of time, freeing up brainpower for building the next big thing on secure, performant and modern codebases.

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Codemod helps us plan, automate, and track migrations that were previously too challenging even to begin.

Kaelig Deloumeau-Prigent

Kaelig Deloumeau-Prigent

Principal Engineer at Netlify
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Codemod made our Next.js migration to the App Router possible. No other service compares.

Peer Richelsen

Peer Richelsen

Co-founder & CEO at Cal.com
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Migrations involving small changes can take hours to implement and validate, Codemod makes that minutes.

Max Leiter

Max Leiter

Software Engineer at Vercel

Join our community of codemod champions & migration experts.

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