Stapler — Offline PDF Tools 作者： Yogesh
30+ PDF tools, entirely offline in your browser: merge, convert, compress, sign, redact. No uploads, ever.
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Stapler is a complete PDF toolkit that never leaves your browser — no uploads, no accounts, no server, ever.
Most "free PDF tools" online quietly send your file to a server you'll never see, then ask you to sign up to get it back. Stapler works differently: every merge, every redaction, every signature is computed on your own machine, inside a sandboxed offline-only extension page. Your documents never touch a network — not ours, not anyone's.
Organize & edit — Merge, split, and extract pages. Rotate, delete, duplicate, and reorder. Crop, insert, and remove blank pages. Normalize mixed page sizes. Build N-up layouts and booklets. Add bookmarks, page numbers, watermarks, Bates stamps, and QR/barcode stamps.
Convert — Images (PNG/JPEG/HEIC) to PDF and back. PDF to plain text or Markdown. Markdown to PDF. Extract embedded images and tables.
Sign & fill — Draw, type, or import a signature. Fill and flatten interactive form (AcroForm) fields.
Protect & clean up — Real redaction: the underlying content is structurally removed from the file, not just painted over, with a verification pass before you save. Scrub metadata. Straighten, deskew, and clean up phone-camera scans of paper documents.
Compress — Shrink file size with a raster pass or a surgical re-encode that keeps text sharp — and never inflates a file that's already optimized.
Review & manage — Annotate with highlights, freehand marks, sticky notes, and whiteout. Compare two documents side by side. Batch-process a whole folder with a saved recipe.
Built for real accessibility, too: every tool is fully operable from the keyboard alone, in ten languages including right-to-left scripts, in light or dark mode.
Privacy, proven — not promised
Zero network requests at runtime. Verify it yourself: open DevTools' Network tab and use any tool — nothing appears.
Zero permissions in the install prompt. Chrome won't even show you a warning, because there's nothing to warn about.
No accounts, no tracking, no analytics, no watermarks, no file-size limits, no daily quota.
Open source under the MIT licence — read every line of the code that touches your files.
We built the tool we wanted for our own sensitive documents: something that just works, and never has to ask where your files are going — because they aren't going anywhere.
Most "free PDF tools" online quietly send your file to a server you'll never see, then ask you to sign up to get it back. Stapler works differently: every merge, every redaction, every signature is computed on your own machine, inside a sandboxed offline-only extension page. Your documents never touch a network — not ours, not anyone's.
Organize & edit — Merge, split, and extract pages. Rotate, delete, duplicate, and reorder. Crop, insert, and remove blank pages. Normalize mixed page sizes. Build N-up layouts and booklets. Add bookmarks, page numbers, watermarks, Bates stamps, and QR/barcode stamps.
Convert — Images (PNG/JPEG/HEIC) to PDF and back. PDF to plain text or Markdown. Markdown to PDF. Extract embedded images and tables.
Sign & fill — Draw, type, or import a signature. Fill and flatten interactive form (AcroForm) fields.
Protect & clean up — Real redaction: the underlying content is structurally removed from the file, not just painted over, with a verification pass before you save. Scrub metadata. Straighten, deskew, and clean up phone-camera scans of paper documents.
Compress — Shrink file size with a raster pass or a surgical re-encode that keeps text sharp — and never inflates a file that's already optimized.
Review & manage — Annotate with highlights, freehand marks, sticky notes, and whiteout. Compare two documents side by side. Batch-process a whole folder with a saved recipe.
Built for real accessibility, too: every tool is fully operable from the keyboard alone, in ten languages including right-to-left scripts, in light or dark mode.
Privacy, proven — not promised
Zero network requests at runtime. Verify it yourself: open DevTools' Network tab and use any tool — nothing appears.
Zero permissions in the install prompt. Chrome won't even show you a warning, because there's nothing to warn about.
No accounts, no tracking, no analytics, no watermarks, no file-size limits, no daily quota.
Open source under the MIT licence — read every line of the code that touches your files.
We built the tool we wanted for our own sensitive documents: something that just works, and never has to ask where your files are going — because they aren't going anywhere.
Stapler is fully open source under the MIT licence — the same code that's in this package is at github.com/yogesh-bhatttk/stapler. Bugs and feature requests are welcome as GitHub issues. The zero-network claim isn't just asserted: an automated end-to-end test asserts no request leaves the browser on every code change, and it's part of the same repository.
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