PDF tools
13 PDF tools that work entirely in your browser. Your documents are never uploaded, so they are safe for contracts, statements and IDs.
Combine & split
Edit & annotate
Convert & shrink
How PDF tools work without uploading
Typical online PDF services upload your file, process it on their servers and send it back. SB Tools reads the file into your browser’s memory and edits it there with two open-source libraries: pdf-lib for creating and modifying PDFs, and Mozilla’s PDF.js for rendering pages and reading text. The finished file is generated on your device and downloaded directly.
Limits are those of your device: large files take more memory, and password-protected PDFs must be unlocked first.
Frequently asked questions
Are my PDFs uploaded?
No. Files are opened and edited locally in your browser and never sent to a server.
Can I edit a password-protected PDF?
Not yet. Encrypted PDFs need to be opened with their password in a PDF reader and saved without protection first.
Is the Sign PDF tool legally binding?
It places an image of your signature on the page, which many everyday agreements accept. It is not a certificate-based (PAdES) digital signature.