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Sign PDF

Draw a signature and place it on a PDF in your browser — the document and the signature are never uploaded.

Runs in your browser — nothing is uploaded. Verify it

About the Sign PDF

Sign PDF files in your browser — draw your signature, click where it belongs, and download. The document never leaves your device, and its text stays selectable because nothing is rasterised.

A signature is the most personal mark a person owns, and it is usually going onto the most sensitive document they hold: a lease, an offer letter, a tax form, a medical consent. Every large signing site takes that file onto its own servers — Adobe states it under the drop zone, Smallpdf keeps it for an hour — and asks you to sign in before you can have it back. Doing it in the browser removes the upload from the process entirely: there is no queue, no account, no retention window, and no copy of your signature stored anywhere.

How to use the Sign PDF

  1. Choose your PDF, or drop it onto the page. It is read in the browser and never sent anywhere.
  2. Draw your signature on the pad. It is trimmed to the ink, so it sits where you place it rather than inside a transparent box.
  3. Click on the page where the signature belongs, drag it to fine-tune, and choose the last page or every page.
  4. Press Sign and download. The signed PDF lands in your downloads with its original text still selectable.

Frequently asked questions

Is my PDF uploaded to sign it?

No. The file is read with the browser's own file API, the signature is drawn on a canvas in this page, and the signed PDF is assembled in memory before it is handed to your downloads folder. There is no upload request, no processing queue, and no server that could keep a copy. That is different from Adobe, which states under its drop zone that the file is "securely handled by Adobe servers", and from Smallpdf, which deletes files "after one hour unless you save them to your Smallpdf account".

Is this a legally binding electronic signature?

It is an electronic signature in the ordinary sense: a mark showing intent to sign, which is what the ESIGN Act and the EU's eIDAS treat as an electronic signature for most contracts, leases and HR documents. It is not a certificate-based digital signature (PAdES): there is no certificate, no cryptographic proof of who signed, and no tamper evidence, so a reader cannot tell whether the page changed after signing. Where a signature has to be verifiable — regulated filings, notarised documents — you need a signing service with an identity check, and this tool is honest that it is not one.

Does the signature land in the right place on a scanned page?

Yes, including on a page stored sideways. A scanned page is often landscape pixels plus a /Rotate instruction telling the reader to turn it, and a page prepared for print carries a CropBox smaller than its physical sheet. Most tools place the signature in the page's own coordinate system and it arrives rotated or clipped. This one plans the placement against the page as you see it and maps it back through both the rotation and the visible area, so what you drag on screen is where it lands.

Can I sign every page, or only the last one?

Both. The scope control offers the last page, the first page, the page you are looking at, or every page. Signing every page is the initials-on-a-contract case: one placement is applied to all pages at the same relative position, so a 24-page agreement takes one action instead of twenty-four clicks.

Is my signature stored in the browser?

No. The signature exists as pixels on a canvas for as long as the tab is open, and it is never written to localStorage, a cookie or a cache. Close the tab and it is gone. That is deliberate: a signature saved in browser storage is a signature anyone with access to that machine can reuse on a document you never saw.

Does signing flatten the PDF or turn it into an image?

Neither. The signature is embedded as an image object in a new content stream on top of the existing page, so the original text, fonts, images and vector artwork are carried through untouched. The words stay selectable and searchable, and the file stays a normal PDF that any reader opens. The document's own author and producer fields are left as they were, too.

What happens with a password-protected PDF?

It is refused, with a sentence that says so. A protected file's page content is encrypted, and a signature written into it could not be encrypted to match — the result would be a file no reader can open. Remove the password in a PDF reader first, then sign the file.

Is there a file size or page limit?

There is no limit imposed by this site, because nothing is uploaded and no request carries the file. The practical ceiling is your browser's memory: a several-hundred-page contract signs fine on a desktop, and a phone will be slower on a large scan. The signature image itself is a few kilobytes, because it is trimmed to the ink before it is embedded.

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