Sign PDF
Draw or upload your signature and place it on any PDF page.
Sign documents without printing
Need to sign a PDF? No need to print, sign, and scan. Draw your signature or upload an image, position it exactly where you want, and download the signed document instantly.
- Draw or upload - use your mouse/trackpad to draw, or upload a signature image
- Precise placement - position and resize your signature exactly where needed
- First or last page - choose which page to sign
- Privacy-first - your document never leaves memory
How to Use Sign PDF Online - Free & Private
Add your signature to any PDF online for free. Draw or upload a signature image. Privacy-first - processed in memory, deleted instantly.
Drag and drop your file into the upload area or click to browse your device. Files up to 250 MB are accepted and sent over an encrypted HTTPS connection.
Your file is processed in an isolated, in-memory environment on our servers. It is never written to disk and never mixed with other users' files.
Your result is ready in seconds. Download it, and your file is purged from memory immediately - we keep no copy, backup, or cache.
Why Choose PrivConvert?
Unlike other online tools that upload your files to remote servers, store them for days, and may use them for AI training or data mining, PrivConvert was built with privacy as the foundation.
Files are processed in volatile memory (RAM) and immediately purged. Nothing is ever written to disk or backed up.
All uploads and downloads are encrypted with TLS 1.3. Your files cannot be intercepted in transit.
Use any tool instantly without signing up, providing an email, or creating a profile. No tracking cookies, no user profiling.
Compatible with Windows, macOS, Linux, iOS, and Android. No plugins or desktop software needed - just a modern web browser.
Trusted by Thousands of Users
PrivConvert processes thousands of file conversions every day. Our commitment to privacy and security has made us the go-to choice for professionals, developers, and privacy-conscious users worldwide.
Frequently Asked Questions
Is Sign PDF Online - Free & Private free to use?
Yes, completely free with no limits, no sign-up, and no hidden fees. Use it as many times as you want.
Is my data safe?
Your file is processed in an isolated, in-memory environment on our servers, sent over an encrypted HTTPS connection, and permanently deleted the moment your download is ready. It is never written to disk, stored, or shared.
Does it work on mobile devices?
Yes. The tool works on any device with a modern web browser - smartphones, tablets, laptops, and desktops.
Do I need to create an account?
No. You can use the tool instantly without signing up, providing an email, or creating any profile.
A drawn signature is not a digital signature
This adds a visible signature image to a page — you draw it or upload one, and it is composited into the document. That is what is needed for the overwhelming majority of everyday paperwork: rental agreements, permission slips, delivery confirmations, internal approvals.
It is not a cryptographic digital signature, and the difference is worth understanding because the two are often conflated.
The two kinds
An electronic signature is a mark indicating intent to agree. A drawn signature, a typed name, a clicked "I accept" — all qualify, and under the US ESIGN Act and the EU's eIDAS regulation they are generally legally binding for ordinary contracts.
A digital signature is a cryptographic operation using a certificate from a recognised authority. It binds the signature to the document's exact bytes, so a viewer can verify both who signed and that not one character has changed since. It requires a certificate you obtain and control, which is why no web page can produce one for you.
Which you need
For everyday agreements, a visible signature is normal and accepted. For documents where a specific standard is mandated — certain court filings, some government submissions, regulated financial and medical records, most public procurement in the EU — a qualified digital signature may be legally required, and an image of your handwriting will be rejected.
If you are unsure, the requirement is usually stated by whoever is asking for the document. When it is not mentioned, an electronic signature is what is expected.
Your document and your signature image are processed in memory and discarded when your download is ready — worth noting, since a signature image is a reusable credential and not something to leave on someone's server.