How Tweeks works
Tweeks runs lightweight browser modifications that change how a page looks or behaves. Each tweek runs in a sandbox so your changes stay separate from page code.
About Tweeks
We're building software that gives people control of the web again.
Tweeks is an AI-powered browser extension from NextByte (Y Combinator W25) that lets you change how any website looks and behaves without writing code.
We started Tweeks because too much of the modern web is fixed around the average user. We think the internet should be easier to shape around the way you actually work.
It should be adjustable, more personal, and tuned to what you need.
25k+
people tweeking sites
4k+
public tweeks
4M+
pages modified
* you can tweek this page too.
The product
All the flexibility of userscripts, none of the homework
Tweeks launched as the next generation of userscript manager, a successor to Tampermonkey and Greasemonkey. Those tools expect you to write the scripts yourself. Tweeks generates the modification for you, so you get the same power without needing to understand CSS selectors or browser APIs just to make a site usable.
Describe the change you want, and Tweeks looks at the page and writes a modification to match. The change applies right in your browser and stays in place on every visit until you turn it off. You can share your tweeks with one click, and you can also install tweeks from the community.
Trust
Nothing happens unless you ask
Tweeks only acts when you ask it to. Here is what that means at each step.
Generation
Tweeks reads page context when you ask it to generate or modify something. There is no background collection of the pages you browse.
Sharing
Your generated tweeks stay private to your account unless you choose to publish a share link.
Review
Public tweeks include the code they run, so anyone can review what a change does before installing it.
The team
Two tinkerers who couldn't leave the web alone
Matt and Jason are lifelong tinkerers who met at MIT and both love to build. After school, Jason worked on recommendation systems at Pinterest and Matt worked on post-training for foundation models at IBM Research. Neither of them ever stopped pulling apart software that got in their way.
Tweeks began as a side project to fix the annoying parts of the sites they used every day. The list of fixes kept growing, and the project grew with it. In 2025 they founded NextByte and went through Y Combinator. They now build Tweeks full time.
Co-founder
Jason Madeano
Former Pinterest engineer who worked on Homefeed relevance and recommendation systems, with BS and MEng from MIT.
Co-founder
Matt Stallone
Former IBM Research engineer who worked on post-training for foundation language models, with BS and MEng from MIT.
What people fix with it
The community has published 4k+ tweeks for sites like YouTube, Google, Reddit, Amazon, X, and ChatGPT. Most of them strip out distractions or add controls the site never shipped.
Open and transparent
Every public tweek exposes its source code. We also keep a public privacy policy, changelog, and engineering blog.
Start with the library, then make the web yours.
Tweeks works across Chrome, Edge, Brave, and Firefox. Browse what the community has already built, or describe your own idea and let the extension generate it for you.