ishanjalan/Neutron ? reverse-engineered prompt

Build me a privacy first web app for file tools that runs entirely in the browser, with no uploads or tracking.

I want one site with a few separate tools for common tasks: an image compressor, a PDF toolkit, a video compressor, and GIF tools. Each tool should feel polished and easy to use, with drag and drop file input, clear progress, preview before and after where it makes sense, and simple download buttons for the finished files. It should work offline as a PWA, be fast, and keep everything local on the device.

Make it feel modern and clean, with smooth animations and a good responsive layout. If you need to check current docs for the best browser APIs or libraries, go ahead and look them up online. I also want the project set up so each tool can live as its own page, but still share the same overall design and reusable UI pieces.