Free private PDF tools that never upload your files.
Organize, convert, number, watermark, and protect sensitive documents right in your browser. Your files stay on this device from start to finish.
Start with your files
Sign, redact, merge, compress, convert, and more — pick the tool after your files are open. Or start from a specific tool below.
Every tool
Organize pages
Convert & compress
Edit pages
- Sign PDFNewDraw, type, or upload a signature.
- Fill PDF formNewFill in fields, then flatten if you like.
- Add page numbersNewNumber pages in any corner or the center.
- Watermark PDFNewStamp CONFIDENTIAL, DRAFT, or any text.
- Crop & resize PDFNewTrim margins or fit pages to A4.
- Rotate PDFTurn pages left or right and save.
Security & privacy
- Redact PDFNewPermanently black out sensitive text.
- Share PDF safelyNewClean, protect, and send in one step.
- Protect PDFNewAdd an AES-256 password to a PDF.
- Unlock PDFNewRemove a password you already know.
- PDF privacy checkSee and remove hidden metadata.
- Remove PDF metadataStrip the author, dates, and hidden XMP.
How DocuChan PDF tools work
Open a tool and choose a PDF from your device.
The file is processed by a dedicated worker inside this browser tab.
Save the result, or hand it straight to secure Send or Beam. Close the tab and the working copy is gone.
Frequently asked questions
Are my files uploaded?
No. The PDF is read and changed by code running in this browser tab. The tools page blocks network connections for file processing, so the document, its pages, and any password you type stay on your device.
How large can the PDF be?
Up to 150 MB per file, 300 MB in total when you work with several files, and 500 pages. Very large or complex documents also depend on your device’s memory.
Is it free?
Yes. The PDF tools are free to use, need no account, and add no watermark.