Sign PDF
Sign or stamp your documents securely.
Select PDF File
Or drag and drop here
Signing options
Sign a PDF by drawing, typing or uploading your signature
Place a signature on a document and send it back, without printing it. The document and your signature both stay in your browser.
The print-sign-scan cycle is one of the more absurd rituals of office life. A document arrives digitally, gets printed onto paper so a pen can touch it, and is then photographed back into a worse-quality digital file. Everyone involved knows it is silly, and it persists because signing on screen has historically meant either expensive software or uploading the agreement to a website.
This tool places a signature onto the page directly. You can draw one with a mouse or a finger, type your name and have it rendered, or upload a photograph of a signature you already have. Position it where it belongs, resize it, and export.
It is worth being precise about what this produces, because the terminology around electronic signatures is genuinely confusing and most tools are vague on purpose. This creates a visual signature: an image of your mark, placed on the page. That is what the overwhelming majority of everyday agreements need. It is not a cryptographic digital signature backed by a certificate — see the limitations for when that distinction matters.
Your signature never leaves the device
The document and your signature are handled entirely in the browser tab. Neither is uploaded, which is the whole point when signing an agreement.
Draw, type or upload
Sign with a finger on a touchscreen, type your name in a handwriting style, or place a photograph of your existing signature.
No printer, no scanner
The signed file stays digital throughout, so it keeps its original quality instead of becoming a photograph of a printout.
How to sign a PDF
Open the document you need to sign.
Draw, type or upload your signature.
Place and size it where it belongs on the page.
Download the signed document.
Neither the agreement nor your signature is uploaded
Signing is the one operation where you combine a confidential document with your own handwritten mark. Doing it in the browser means that pairing exists only on your machine — no upload, no stored signature on someone else's account.
When people reach for this
Returning a contract the same day
A supplier agreement or an employment contract that needs signing and sending back. Doing it on screen removes the printer, the scanner and the trip to find one.
Signing on a phone, away from a desk
A form that arrives while you are travelling. Drawing a signature with a finger on a touchscreen is often the only realistic way to return it that day.
Approving internal documents
Expense forms, purchase requisitions and sign-off sheets rarely need a certified signature — they need a recognisable mark from the right person, which is exactly this.
Signing something you should not upload
A confidential settlement, a medical consent form, an NDA. Sending these to a signing service means disclosing them to a third party before they are even signed.
What actually happens to your file
Whichever way you create the signature, it ends up as an image. Drawing produces a canvas that is captured as a PNG; typing renders your name in a handwriting-style face and captures that; uploading uses the file you supplied.
The document is loaded with pdf-lib and your signature image is embedded into it. PNG is used for drawn and typed signatures specifically because it preserves transparency — that is what lets the signature sit over the page rather than arriving inside a white rectangle covering the text underneath.
The position and size you set on screen are converted into PDF coordinates using the target page's own dimensions, and the vertical axis is flipped, because PDF measures from the bottom-left of the page while the preview you dragged on measures from the top-left.
The image is then drawn onto that page's content stream. The rest of the document is untouched — nothing is re-rendered, so the text stays selectable and the pages keep their original quality. What you download is your document with an image added, which is precisely what a signed page is.
What this is, and what it is not
- This is a visual signature, not a cryptographic one. It does not embed a certificate, does not bind the signature to the document's contents mathematically, and will not show as "validated" in Acrobat's signature panel. For most everyday agreements that is fine, because what matters legally is usually intent and evidence of consent rather than the technical form.
- If your situation requires a qualified electronic signature — certain property transactions, some court filings, regulated financial documents in the EU under eIDAS — use a certified provider. This tool does not produce one and cannot.
- It does not lock the document. Anyone can edit the file afterwards, including moving or removing the signature. If you need the signed version fixed, encrypt it with the protect tool immediately after signing.
- There is no audit trail. Signing services record who opened the document, when, and from where. That evidence is often the actual product being sold, and none of it exists here.
- It cannot fill interactive form fields in an AcroForm. The signature is drawn onto the page rather than entered into a form field.
- Encrypted documents must be unlocked first, since the page cannot be modified while the file is encrypted.
Compared with an online signing service
| This tool | Typical signing service | |
|---|---|---|
| Where your document goes | Nowhere. It stays in the browser tab. | Uploaded, and usually stored. |
| Where your signature goes | Nowhere. | Stored on their account for reuse. |
| Signing something confidential | No disclosure occurs. | Disclosed before it is even signed. |
| Audit trail | None. | Yes — often the main thing you pay for. |
| Certificate-backed signature | No. | Sometimes, on paid tiers. |
| Cost and account | Free, no account. | Usually metered or subscription. |