Free PDF tools that run in your browser

Poly3D's PDF toolbox works entirely on your device — no upload, no account, no watermarks on your files. View, read and print PDFs, merge several into one, split or extract page ranges, rotate, add a watermark or page numbers, compress large files, run OCR on scans, add text (including Chinese) and drop a signature onto a page. The compress, rotate, watermark, page-number and OCR tools also work in batch: drop several PDFs and download the results as a .zip. Because everything runs locally with WebAssembly, sensitive documents never leave your browser.

Frequently asked questions

Are my PDFs uploaded to a server?

No. Every tool runs locally in your browser using WebAssembly and the Canvas API. Your PDF never leaves your device.

Can I process several PDFs at once?

Yes. Compress, rotate, watermark, page numbers and OCR accept multiple files and download the results together as a .zip.

Does compressing a PDF lose the text?

Compression rasterises each page to a JPEG image, so text becomes part of the image and is no longer selectable. Use it when file size matters more than selectable text.

Can I print a PDF?

Yes. Open it in the reader and press Print (or Ctrl+P): choose all pages, just the current page, or a range, pick a quality, and it goes straight to your printer. The pages are rendered on your device — nothing is uploaded.

Can I OCR a scanned PDF?

Yes. The OCR tool recognises text in scanned PDFs or images right in your browser (English and Chinese) and exports a .txt file.

Questions, feedback or a book you'd like on the shelf? Email us · poly3d.ai