Sign PDF
Draw or upload a signature, drag it onto any PDF page, and download the signed file. No upload.
Drag a PDF here to sign, or click to choose
PDF · No server upload
🔒 Your PDF and signature are processed entirely in your browser. No file is ever sent to a server.
How it works
Drop a PDF onto the drop zone (or click to browse) and it renders in your browser, page by page, with Prev and Next controls to reach the page you need. Create your signature two ways: draw it directly on the signing pad with a mouse, trackpad, or finger, or switch to the upload tab and load an image, where a transparent PNG gives the cleanest edges. Once a signature exists it appears as a movable box over the page, so you can drag it to line up with the signature line and use the size slider to scale it from small initials to a full-width mark. Hit Apply signature and the tool embeds the mark onto the page you are viewing and downloads a new file named after your original with a -signed suffix, leaving the source PDF untouched.
When and why to use it
Reach for this whenever a PDF needs your signature and printing, signing, and re-scanning would be a waste of time: rental and freelance contracts, NDAs, school and medical consent forms, quotes, invoices, or a delivery receipt you were emailed. Because everything runs locally there is no account to create, no watermark, and no monthly cap on how many documents you can sign, which is where most commercial e-signature services start charging. It behaves the same on any device: use a mouse on a laptop for a steady line, or sign with your finger on a phone or tablet for something closer to your real handwriting. If you already keep a scanned signature as a transparent PNG, upload it once and drop it onto each document in seconds.
Privacy and quality
Your PDF is opened with an in-browser renderer and the signed copy is written with an in-browser PDF library, so the file and your signature are processed entirely on your device and never uploaded, which is a real difference for contracts, agreements, and anything with personal data. For a crisp result prefer a transparent PNG over a photo of paper, so no white box surrounds the mark, and when drawing by hand move slowly and deliberately rather than fast. Position the signature precisely over the printed line before saving, since it is placed on the page you are currently viewing. Note that the tool inserts a visual signature image and does not add a cryptographic digital certificate, so whether it counts as legally binding depends on your jurisdiction and the agreement between the parties.
Frequently asked questions
Is my PDF uploaded to a server?
No. The document is rendered and the signed copy is generated entirely in your browser using on-device libraries, so neither the PDF nor your signature ever leaves your device. That is what makes it safe for contracts, NDAs, and consent forms.
Can I sign a multi-page PDF?
Yes. Use the Prev and Next buttons to page through the document and place your signature on the page you choose. Each save applies the signature to the page you are currently viewing, so for several pages, position and apply it one page at a time.
Is the signature legally binding?
The tool inserts a visual signature image onto the page; it does not attach a cryptographic digital certificate. Whether that qualifies as legally binding depends on your country's rules and the agreement between the parties, so check the requirements before using it for formal contracts.