PDF tools 38
Merge, split, compress, protect, convert and repair PDFs without uploading them. Each tool runs in this tab using pdf-lib or qpdf compiled to WebAssembly, so your document stays on your machine. Contracts, medical records and anything else you would rather not hand to a server are safe to drop here.
Pages12
Convert8
Stamps & numbering6
Access3
Forms2
Size & repair7
Questions
Are my PDFs uploaded anywhere?
No. Every PDF tool here runs in a Web Worker in this tab, using pdf-lib or qpdf compiled to WebAssembly. There is no upload step and no server to receive one. Turn off your network and the tools still work, which is the simplest way to check.
Is there a file size limit?
No fixed limit. The file is held in your browser's memory while it works, so the ceiling is your own device. Laptops handle a few hundred MB comfortably; phones give up sooner. Large scans are the usual reason a tab runs out of room.
Which tool do I need to make a PDF smaller?
Compress PDF, which recompresses streams and images losslessly with qpdf. If the file is mostly scanned pages, expect a real reduction. If it is text that was already saved efficiently, it might hand the file back unchanged rather than return something larger.
Can these tools open a password-protected PDF?
Only after you unlock it. Run Unlock PDF with the password you have, then use any other tool on the result. Tools that hit an encrypted file refuse with a message telling you to unlock it first rather than failing halfway.
Do these work offline?
Yes. The whole site is stored in your browser after the first visit, including the qpdf and pdf-lib code. Every PDF tool keeps working with no network at all.