Sign PDF, free in your browser
You can sign a PDF, or send one to someone else to sign, right here in your browser. To request a signature, open the document, mark where each signature and date should go, and download a ready-to-send PDF you email yourself. The other person opens that same file here, the signature fields appear automatically, they draw or type their signature, and the finished PDF gets a tamper-evident certificate (a SHA-256 fingerprint of the exact signed document) plus the signer’s name and time. Nothing is uploaded - the document is signed on each person’s own device - with no account and no watermark.
How to sign a PDF or request a signature
- Open your PDF - if it was already prepared for signing, the fields appear automatically.
- To request a signature: mark where each signature/date goes and download a file to email to the signer.
- To sign: draw or type your signature in each field, then download the signed PDF (with its certificate) and email it back.
Limits & good to know
- Everything runs in the browser with no server, so the document is routed by your own email: you send the prepared file, and the signer emails the signed copy back. There is no automatic delivery or reminder tracking.
- Signatures can be drawn or typed, placed on the fields you mark (signature, initials, date, or text).
- The completed PDF gets a certificate page with a SHA-256 fingerprint of the exact signed document, the signer’s name, and the date - so any later change to the file is detectable.
- The signer’s name and consent are recorded as stated by the signer; identity is not independently verified the way a paid, server-backed service with email/ID checks would.
- A password-protected PDF must be unlocked before it can be prepared or signed.
Frequently asked questions
- Are my files uploaded to a server?
- No. TrulyFreePDF runs entirely in your browser - your file is opened and processed on your own device and is never uploaded, stored, or shared.
- Is an electronic signature made this way legally valid?
- In many places an electronic signature - a mark you apply intending to sign, with a record of what was signed and when - is valid for common agreements (US ESIGN/UETA, EU eIDAS “simple” electronic signatures). This tool records the signer’s name, the time, and a tamper-evident fingerprint of the exact document. It does not independently verify the signer’s identity (email or ID checks), which some higher-assurance uses require, so for high-stakes contracts check what your situation needs.
- How does the other person sign if nothing is uploaded?
- You email them the prepared PDF yourself. They open that same file here in their browser - the signature fields are stored inside the file, so they appear automatically - they sign on their own device, and email the signed copy back. The document is never uploaded to us at any step.
- Can I tell if a signed document was altered afterward?
- Yes. The certificate page carries a SHA-256 fingerprint of the exact document that was signed. Load your original alongside the signed copy and the tool compares the fingerprints - if they differ, the document changed. This all happens on your device.
- Is this really free, or free "until you hit a limit"?
- Really free. Unlike most "free" PDF sites there is no task-per-day cap, no locked Pro features, no watermark stamped on your file, and no payment step before download. Every tool is the full tool.