Problem

Tweeks.io addresses the friction of living with websites that are optimized for a generic audience rather than for an individual’s workflow. Users encounter distracting feeds, missing controls, awkward layouts, repetitive chores, and site-specific limitations; fixing those problems traditionally requires finding or writing custom JavaScript and CSS. The economic pain is primarily lost time, attention, and productivity rather than a separately quantified financial cost. A representative killer use case is removing YouTube Shorts or recommendations, while other examples include adding price tracking to Amazon, filtering LinkedIn, and improving readability on Reddit.

Product / Service

Tweeks is a browser extension that lets users describe a desired website change in plain English, after which AI generates the corresponding modification without requiring code. It compiles the request into a sandboxed userscript that runs only on selected sites, can be inspected, enabled or disabled, and modifies a page’s appearance, layout, or behavior. Users can also install community-created “tweeks” with one click and publish their own modifications for others to use.

The service is freemium: browsing, installing public tweeks, and creating modifications are available for free, while optional paid plans provide higher usage limits and advanced features. It works across major browsers and is positioned as a more accessible, AI-powered evolution of userscript managers such as Tampermonkey, Greasemonkey, and Violentmonkey, as well as customization tools such as Stylus.

Market

Tweeks competes in the browser-extension, userscript-management, and consumer-AI software categories. Its closest substitutes are traditional tools such as Tampermonkey, Greasemonkey, Violentmonkey, and Stylus, which offer flexibility but generally require users to locate, understand, or write scripts themselves. Tweeks differentiates through natural-language generation, local execution, transparency into the generated source, and a community library for sharing modifications.

The company was founded in 2025, is a YC Winter 2025 active company with two employees based in San Francisco, and is operated by NextByte. As of the current public site evidence, it reports more than 25,000 people using Tweeks, over 4,000 public tweeks, and more than 4 million pages modified; the Chrome Web Store lists a 4.9 rating from 52 ratings and an in-app-purchase capability. The available evidence establishes meaningful early adoption, but does not disclose revenue or a verified funding amount, so the company’s revenue maturity remains unclear rather than demonstrably pre-revenue.