Open source
DimlyPDF
PDF dark mode — 100% in the browser.
- Year
- 2025
- Status
- open-source
- Stack
- React 18, TypeScript, Vite, MuPDF, Tailwind CSS
- Role
- Design + engineering
DimlyPDF converts PDF files to dark mode entirely in the browser — no uploads, no server, no data leaving the device. It uses MuPDF compiled to WebAssembly, so the heavy lifting runs in the user's own CPU.
Four themes are available. Text stays selectable after conversion, hyperlinks and bookmarks are preserved, and files up to 100MB are handled without issue. Because everything is client-side, it works offline and can be deployed as a static site at zero hosting cost.