Sign a PDF for Free
Draw, type, or upload your signature, place it anywhere on the document, and download your signed PDF in seconds. Your file never leaves your device.
- Free
- No sign-up
- Multiple signatures
- 100% private
100% private — Everything is processed directly in your browser: your files, voice, and image are never sent to Chatzam's servers.
How to sign a PDF online?
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Upload your PDF
Drag your document into the area above or click to select it.
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Create your signature
Draw it with your mouse or finger, type your name in a handwritten style, or upload a photo of your signature.
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Place it and download
Click on the page where you want it, adjust the size, then download the signed PDF.
Everything you need to sign your documents
Three ways to sign
Drawn signature, handwritten-style text, or an uploaded image: a photo's white background is made transparent automatically.
Precise placement
Move and resize the signature directly on the page preview, across one or several pages.
Automatic date
Add today's date under your signature with a single click, handy for contracts and forms.
Total confidentiality
The PDF is edited in your browser: it's never sent to a server, ideal for sensitive documents.
Sign a PDF document without printing it
Lease agreement, quote, purchase order, parental consent form, or administrative paperwork: you no longer need to print, sign, then scan. Upload the PDF, create your signature, and place it on the right page. The signed document downloads instantly, ready to send by email.
A handwritten signature, not a certified electronic signature
This tool places an image of your signature on the PDF, as if you signed it by hand. That's what most everyday tasks require. For a document requiring a qualified electronic signature (with certificate and identity verification), you'll need a certified trusted provider.
Your documents stay with you
Online signing services often send your file to their servers. Here, everything happens in your browser thanks to open-source libraries (pdf.js and pdf-lib): neither the PDF nor your signature ever leaves your device, and nothing is kept after you close the page.
Frequently Asked Questions
Is signing a PDF free?
Yes, completely free and with no sign-up. You can sign as many documents as you like.
Can I sign on my phone?
Yes. On a smartphone or tablet, draw your signature with your finger, then tap the page to place it.
Does a signature added this way have legal value?
It has the same value as a scanned handwritten signature, sufficient for most everyday documents. It doesn't replace a qualified electronic signature with a certificate, required for certain legal acts.
My PDF is password-protected, what should I do?
Encrypted PDFs can't be edited. Open it with your password, save an unprotected copy, then sign that copy.