AiStyleUpgrade

Grants content-script access to one user-approved domain at a time and shows a draggable in-page dialog on that domain.

Modernize an established website’s look and add polished effects, without touching its HTML or breaking its existing CSS and JavaScript. Medium and large websites often carry years of accumulated markup, stylesheets and scripts. A redesign usually means a costly rebuild, a long regression-testing cycle, and the risk of breaking something that works. AiStyleUpgrade takes a different approach: it layers a modern design over your site without changing a single line of your existing code. What it does Analyzes your pages. It captures a structural snapshot of your page, including layout data and which styles are locked by inline styles or legacy scripts. All text is masked, and no real content, links or images are included. Generates a complete design with the AI chat you choose. You receive 30 design themes, 5 color palettes for your favorite, then production-ready CSS and a small JavaScript file. Respects your legacy code. The new CSS overrides old styles through the cascade only. Your existing HTML, class names, IDs and JavaScript handlers are never removed or renamed. Applies before first paint. Visitors never see a flash of the old design. Handles real-world sites. Capture desktop, mobile and alternate states (open menus, modals). Extend the design page by page to templates with different structures. Lets you refine. Pick any element on the page, describe a change or choose a ready-made effect (soft shadows, fade-in cards, parallax, shrinking header), and update the design. Exports for production. Download the CSS and light JS files and deploy them to your own server with two lines of HTML in your page template. Watch the video walkthrough at https://www.youtube.com/watch?v=ZAl5VFm39tA Why install it Low risk. There is no HTML migration and no framework change. “Forget Design” restores the original look in one click. Fast iteration. Preview a full redesign on your live pages in minutes, before committing to anything. Works with any AI assistant, tested best with Claude. You choose the AI, and the extension never sends your page anywhere on its own. In our testing, the best results came from the latest Claude Sonnet in the Claude chat, which we recommend. Privacy-conscious. Designs are stored in your browser’s local storage. The extension works on one domain at a time, and only after you grant permission. Deployable output. The exported files are plain CSS and JavaScript that fit into your existing build or release process. Built for webmasters, front-end teams, agencies and site owners responsible for medium and large websites, whether content-heavy, e-commerce or application-style, that need a fresh look on a realistic timeline and budget. Exported files are subject to a per-domain license (see aistyleupgrade.com/pricing.html). The extension reports the name of the domain you are working on to aistyleupgrade.com for licensing purposes. AiStyleUpgrade is an independent product and is not affiliated with or endorsed by Anthropic. Claude is a trademark of Anthropic. Attribution: Some screenshots show before-and-after style changes to the homepages of creativecommons.org (owned by Creative Commons) and open.ed.ac.uk (owned by The University of Edinburgh). I used these sites not because their design needs fixing—I actually think the original styles are cool!—but because they are licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/), which allows for free adaptation.