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Perdius
100% on-device · no uploads

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Merge, split, compare,protect and unlock PDFs —entirely in your browser.

Perdius is a privacy-first PDF playground. Every byte stays on your device — no servers, no tracking, no analytics. Pick a tool below to begin.

Stack

v0.1.0
  • Manipulationpdf-lib
  • Renderingpdfjs-dist 6
  • Compress / Encryptmupdf 1.27 (WASM)
  • Heavy workWeb Workers + Comlink
  • UIReact 19 · GSAP · Tailwind v4

100% on-device. Verify by opening your browser’s DevTools → Network tab.

Merge

Combine multiple PDFs

Drop PDFs to merge

Add 2 or more files, then drag to reorder

0 files · order = merge order