Sign PDF

PDF ToolsPremium

Add your signature to any PDF document quickly and securely.

Nothing Is UploadedRuns In This Browser TabNo Account Needed

How It Works

1

Upload / Input

Select your files or paste your content to get started.

2

Process

The work happens in this browser tab. Your file never leaves your device, so nothing is queued, stored or transmitted.

3

Download / Result

Get your results instantly. Download files or copy output in one click.

Features

Draw signature with mouse or touch
Type it in a handwriting face, with an adjustable size
Upload signature image
Place on any page at any position
Five ink colours, remembered between sessions
Client-side processing for complete privacy

How to use Sign PDF

  1. Add the document

    Drop in the PDF you need to sign. It stays on your device throughout.

  2. Create your signature

    Draw it with a mouse, trackpad or finger, type it in the handwriting face and set its size, or upload an image of your handwritten signature on white paper. Five ink colours are on offer.

  3. Place it on the page

    It lands in the middle of the page you are viewing; drag it to the right spot and resize it. There are no separate date or initials fields — if a page needs initials, type them as a signature and place that.

  4. Download the signed PDF

    The signature is flattened into the page, so it travels with the document and looks the same in every reader.

When to use Sign PDF

  • Signing a rental agreement or employment contract without printing it
  • Returning a signed form to a school, bank or insurer
  • Typing your initials as a signature and placing them page by page
  • Signing on a phone while away from a printer or scanner

FAQ

Not inside the tool — only your chosen ink colour is remembered between sessions, not the signature itself. To reuse one, draw it once, save a photo or a PNG of it on your device, and add it through the Upload tab each time.
You can add your own signature and then share the signed PDF with the next signer. Each person adds their signature in turn.
In most jurisdictions, yes, for ordinary commercial and personal agreements — electronic signature legislation such as ESIGN in the US and eIDAS in the EU gives them legal effect. Certain documents, typically wills, property deeds and some court filings, still require wet ink or a qualified certificate. Check local requirements for anything consequential.
This places a visual signature onto the page. A digital signature is a cryptographic certificate that binds the document to a verified identity and reveals any subsequent tampering. If someone has specifically requested a digital or qualified signature, you need a certificate authority, not an image.
Not from inside the tool, which remembers your ink colour and nothing else. Draw it once, save a PNG of it on your device, and bring it back through the Upload tab. Bear in mind that a stored signature image is sensitive; keep it somewhere you would keep other identity documents.
Yes. It is flattened into the page content rather than added as a movable annotation, so it renders identically everywhere.

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About Sign PDF

An electronic signature of this kind is an image of your signature placed onto the page. That is exactly what the vast majority of everyday agreements ask for, and it is what happens when you print, sign, scan and email a document — only without the printer, the scanner and the loss of quality.

It is different from a digital signature, which is a cryptographic certificate binding the document to a verified identity and detecting any later alteration. Those are issued by a certificate authority and are required in specific regulated contexts. If a counterparty has asked for a qualified or certificate-based signature, this tool is not what they mean.

For clarity on what actually matters legally: in most jurisdictions an electronic signature is enforceable for ordinary commercial agreements, and the usual disputes are about whether the person intended to sign, not about the pixels. Keep the email thread that accompanied the signing — that context is generally more useful evidence than the signature image itself.

Tips and limits

  • A photographed signature on plain white paper, cropped tightly, usually looks better than one drawn with a mouse — and the Upload tab is the only way to reuse the same signature twice.
  • Sign with a finger on a phone rather than a mouse on a laptop — the result is far more natural.
  • The signature is flattened into the page, so it cannot be dragged off in another reader.
  • This is an electronic signature, not a certificate-based digital signature. Check which one has been asked for.
  • Sign last. Merging or splitting a document after signing can invalidate or displace the signature.