Sign a PDF — without uploading it
Contracts, NDAs, offer letters — these are the documents you most want to keep private. Here your PDF stays in the browser: type, draw, or upload a signature and drop it on any page.
- PDF never leaves your browser
- Type / Draw / Upload — three modes
- Drag-to-position on the page preview
- Apply to one page, all pages, or a range
Create a signature. Drop it on the page.
Sign renders your PDF, lets you make a signature three ways, and places it as a high-res image — all without sending bytes anywhere.
Open the Sign tab
Click the button above or go to /sign.
Drop your PDF
Pages render via PDF.js. A 10-page document takes 2–3 seconds.
Make your signature
Type your name in cursive, draw with mouse/touch/pen, or upload a PNG/JPG.
Drag to position
Drop the signature on the page. Resize with the slider.
Apply & download
Pick which pages get signed — this one, all, or a range like 1-3,5,7-10.
Pick the method that matches your device.
No single style works for everyone.
Type your name
Pick one of four cursive fonts. Best for casual approvals.
Draw it
Mouse, trackpad, finger on phone, or Apple Pencil on iPad. Bezier smoothing removes jitter.
Upload an image
PNG with transparency drops in cleanly. JPGs work but may show a white background.
Apply scope
Sign every page (full contracts), one page (cover sheets), or a custom range.
Signed documents are the private ones.
Documents people sign are the ones they trust least to a third party. Contracts, NDAs, HR forms — every one is something you'd hesitate to upload.
- iLovePDF, Smallpdf, DocFly upload your PDF to render thumbnails
- Free tier caps at 3 documents per day
- Your signature image is often stored "for later use"
- PDF renders entirely with PDF.js in your tab
- No usage cap — 1 document or 100, same workflow
- Signature lives in tab memory only; refresh and it's gone
Browser-side signing has real limits.
What Sign doesn't do — and what to use instead.
Cryptographic e-signatures
No PAdES / digital cert. For legally binding e-signatures, use DocuSign, Adobe Sign, or HelloSign.
Password-protected PDFs
Encrypted PDFs fail to load. Use qpdf to remove the password, then sign.
Bulk signing
No batch mode. For pipelines, use a server-side script with pdf-lib or pdftk.
Very large PDFs (500 MB+)
Browser memory struggles. Use a desktop signing app.
Questions people ask about signing PDFs.
Is this signature legally binding?
Depends on jurisdiction. In most places a visible signature image carries the same weight as a handwritten one. For high-stakes contracts requiring cryptographic e-signature (PAdES, eIDAS), you need a certificate-based tool.
Can I save my signature for next time?
No, by design. The signature lives in tab memory only. If you sign often, save it as a PNG and use Upload mode each time.
Does the typed signature look the same on every computer?
Not exactly — typed signatures use system cursive fonts. For pixel-identical output, draw your signature or upload an image.
Why does my drawn signature look jagged?
It shouldn't — the canvas uses Bezier smoothing. Try drawing more slowly, or use Apple Pencil for finer precision.