Why use Knip?
Knip finds and fixes unused dependencies, exports and files. Use it for enhanced code and dependency management.
Declutter your JavaScript & TypeScript projects
How does it work?
Advanced analysis starting from fine-grained entry points based on the actual frameworks and tooling in (mono)repos for accurate and actionable results.
Battle-tested
Thousands of projects are already using Knip!
Plugins
Knip comes with 100+ plugins for tools and frameworks like Astro, Cypress, ESLint, Jest, GitHub Actions, Next.js, Nx, Remix, Storybook, Svelte, Vite, Vitest, Webpack and many, many more.
Playground
Try Knip on the playground.
Troubleshooting
Trusted by the world’s best software teams
Introduction video
James Shopland has a great introduction and overview of Knip (thanks James!):
PlayCreated by awesome contributors
Special thanks to the wonderful people who have contributed to this project:
Articles about Knip
A curated selection of articles about Knip, most recent first:
- Tom McWright: How to keep package.json under control (2025-09-11)
- Mohammed Farmaan: Declutter Your JavaScript and TypeScript Projects (2025-08-13)
- dip Engineer Blog: Knipで安心してデッドコードを撲滅する (2025-04-04/Japanese 🇯🇵)
- Tom MacWright: Knip: good software for cleaning up TypeScript tech debt (2024-10-25)
- Neng Apichet: มาทำความสะอาด Project โค้ดของเราด้วย Knip กัน (2024-10-22/Thai 🇹🇭)
- Anthony Pena: Knip: l’ultime outil pour faire le ménage dans vos projets! (2024-10-08/French 🇫🇷)
- Taro: TypeScript/JavaScriptの不要なコードを削除するツール「Knip」の紹介 (2024-07-25/Japanese 🇯🇵)
- Kevin Bailey: Delete Code with Knip (2025-10-31)
- Maddy Miller: Using Knip to find dead code in a high-traffic git repo (2023-09-17)
- Josh Goldberg: Speeding Up Centered Part 4: Unused Code Bloat (2023-08-21)
- Smashing Magazine: Knip: An Automated Tool For Finding Unused Files, Exports, And Dependencies (2023-08-14)
- Effective TypeScript: Recommendation Update: ✂️ Use knip to detect dead code and types (2023-07-29)
Don’t just take our word for it
Julien Deniau@julien.deniau.me
Done on a mono-repo in two times.
What's impressive is that there were no false positive!
PS@psparwez
Good morning 🌄
A tool I discovered lately.
If you care about clean codebases, this one's a gem 💎
AlexHarford-TechSEO@alexharfordseo.bsky.social
Knip is a cracking-looking open source tool for trimming unused JavaScript.
patak@patak.dev
From the report, we could improve the situation if we stop sending unused JavaScript. @webpro.nl is doing an incredible job growing the usage of knip.dev, and that should hopefully make a dent in the future.
Ilja@fubits.dev
The VSCode/Cursor extension is ace!
And you can use the Knip MCP to create the config file.
It works for Svelte as well.
Knip is really really good 🙏
Karim Shehadeh@k_shehadeh
This is both embarassing and satisfying after running @Knip 
Alexander Karan@alexanderkaran.bsky.social
Knip is amazing and you should be using it.
stephane le dorze@stephaneledorze
"Thanks Knip!"
everyday,
every team member,
literally..
knip.dev 🏅
Rudolph Gottesheim@MidnightDesign
Thank you so much for this incredible piece of software! Knip is one of the most impressive tools I've seen in my career.
Josh Goldberg 💖@joshuakgoldberg.com
Got my first plugin merged into Knip by @webpro.nl today! ☺️
The contribution experience was fantastic: the docs were super clear, the code was straightforward to navigate, and the helper script to generate a new plugin got me 90% of the way there. Awesome. Thanks Lars!
Kevin Thomas Van Cott@KevinVanCott
All of the TanStack monorepos make use of knip.dev
It's like eslint for detecting unused dependencies or even your own files/modules.
Nicolas Beaussart@beaussan.io
The joy of adding knip.dev (by @webpro.nl) on a codebase! Right in time for spring cleaning 🧹🍃
Gary Tyr@gary__tyr
Knip may be the greatest tool ever conceived.
https://www.npmjs.com/package/knip
Old Man Uzi@daviduzumeri.bsky.social
`knip` is the best code maintenance tool I've used in my 20 years of development, just an absolute work of art
Tom Hicks@Hicksyfern
knip is great.
A great example of stuff just working. It detects your environment so well and its defaults are almost too good because I didn’t realise it was doing everything automatically.
Tom Hicks@Hicksyfern
Then was like “this is how tooling should be, this has taken me an hour not a day and it’s faster and more accurate and more future proof”
Five stars ⭐️⭐️⭐️⭐️⭐️
Jökull Solberg@jokull
Crazy useful tool. Thought it would be a nightmare to setup in my Next.js+Workers repo but it has crazy good automatic detection for code dependencies. In short, Knip creates a graph of code use and highlights dead code for you to snip (knip).
Dominik 🔮@TkDodo
Lars is singlehandedly building the best tool to keep your code clean and your dependencies minimal. And he's so engaging and helpful. Can't imagine going back to not using knip 👏
Quinn Slack@sqs
warning: do not use a tool like knip.dev + code search to delete a ton of unused code. It works too well.
I just did this in https://github.com/sourcegraph/cody/pull/2705, and my boss said if I end the week with net negative lines of code committed, I'm in deep trouble.
Greg Bergé@gregberge_
Ran knip.dev in @argos_ci, and boom 💥! Dead code detected instantly. With a good config, it can run on CI to keep projects clean. Installing this tool should be a no-brainer, like Prettier or ESLint.
Kudos, @webprolific! 👏 
Cory House@housecor
Problem:
🚫 Your project has unused files.
🚫 It has unused npm dependencies.
🚫 It has unused TypeScript exports.
But you haven't noticed, because these things are hard to spot.
Solution: knip
I just used knip to find and resolve dozens of issues.
https://t.co/QmN3sNlmbm
Piotr Gacek 🐟@pkgacek
Knip helped me get rid of over 41k lines of code in legacy codebase 🥺🥺💕
Gajus@kuizinas
Big fans of Knip at @Contra. Such an extremely well developed and maintained project
Abhijeet Prasad@imabhiprasad
Just tried this on https://github.com/getsentry/sentry/ - got some super useful results! Nice work.
Fernando@fernandoeeu_dev
I've manage to delete 6k LOC in the last 30 minutes 🫣
Great job here @webprolific 👍🏽
Dominik 🔮@TkDodo
knip is an amazing tool. Shoutout to @webprolific for building it 🙌.
Not cleaning up correctly has a real maintenance cost. I've deleted lots of dead code - functions that were only used in tests and components that were only used in stories - all thanks to knip 🚀.
Michael Hoffmann@Mokkapps
🛠️ Knip
👉🏻 Knip finds unused dependencies, exports and files in your JavaScript and TypeScript projects.
👉🏻 Less code and dependencies lead to improved performance, less maintenance and easier refactorings.
Nicolas Carlo@nicoespeon
Knip is wonderful at finding out unused code/dependencies in a legacy JavaScript/TypeScript application
Recommend 💯
Here's how Josh used it to remove code bloat in Centered:
Smashing Magazine 🇺🇦 🏳️🌈@smashingmag
Unused files, exports, and dependencies often clutter projects, as it’s difficult knowing when one thing relies on another and scary to remove something you’re not sure is in use. 👀
↬ Meet Knip, which scours projects for these unused artifacts: https://www.smashingmagazine.com/2023/08/knip-automated-tool-find-unused-files-exports-dependencies/
Dan Vanderkam@danvdk
Recommendation update: use knip to find dead code, types and dependencies in your @typescript ✂️https://effectivetypescript.com/2023/07/29/knip/
Stefan Judis@stefanjudis
This is worth checking out on GitHub. 👍 https://github.com/webpro-nl/knip
Kailaash@BKailaash
Streamlining React projects with Knip:
Recently, I employed Knip for a project, and it worked wonders!
It efficiently resolved issues with removing
✅ Unused files,
✅ Unused npm dependencies,
✅ Unneeded TypeScript exports.
A real time-saver for maintaining a clean and efficient codebase. 🛠️ #ReactDevelopment
https://t.co/IbJH2fIzsE
Waldek Mastykarz@waldekm
Found a bunch of unused code, -dependencies, and unnecessary exports. Had just one false positive but overall pretty good. 10/10 would recommend.
If you’ve got a JavaScript package/project use Knip and remove unnecessary code. ✂️
ISC License © 2024 Lars Kappert