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HuntPDF

Sign PDF Online

Draw, type or upload your signature. Add text, stamps & annotations — free and 100% browser-based.
✍️

Drop your PDF here

or click to browse files from your computer

No upload to server
Works offline
Free & unlimited
All browsers
HuntPDF
document.pdf
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Element
Opacity
100%
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Text
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Draw
Color
Size
3
Opacity
100%
Shape
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Document
Pages: —
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Elements: 0

Add Signature

Thickness 2
Draw your signature — mouse, touch or stylus supported
Signature
Signature
Signature
Signature
Color
🖼️

Drop image or click to browse

PNG with transparent background recommended

Add Initials

Choose Stamp

Upload Custom Stamp

Insert Date / Time

Format

Manage Pages

Download Signed PDF

Filename

Keyboard Shortcuts

Open SignatureS Open InitialsI Add TextT Insert DateD Draw / PencilP HighlightH EraserE Sticky NoteN UndoCtrl+Z RedoCtrl+Y Copy ElementCtrl+C Paste ElementCtrl+V Zoom In / Out+ / - Fit WidthW Rotate PageR Prev / Next Page← → Delete SelectedDel Save / DownloadCtrl+S Deselect / CancelEsc

Sign PDF — free online PDF Editor & Sign tool

Sign PDF is a free online tool from HuntPDF. Sign PDF online free — draw, type or upload your signature. Add text, stamps, annotations. 100% browser-based. HuntPDF. You work straight from your browser — there is nothing to install, no account to create and no watermark on the result. Upload a file up to 250MB, the processing happens on our secure servers, and your document is deleted automatically once you have your result.

How to Sign PDF

  1. Upload your PDF

    Drop the PDF into the editor. Your pages load right in the browser.

  2. Make your changes

    Add text, images, annotations or a signature exactly where you want them.

  3. Download the finished PDF

    Export the edited document and save it to your device.

Why use HuntPDF?

Completely free

No signup, no watermark and no daily cap. Use it as often as you need.

Private by default

Files travel over an encrypted connection and are deleted the moment your download finishes.

Works everywhere

Runs in any modern browser on Windows, macOS, Linux, Android and iOS.

Fast and accurate

Most files are processed in a few seconds on our servers, not your laptop.

Frequently asked questions

What is Sign PDF and how does it work?

Sign PDF lets you add a signature to a document without printing it. You draw or type your signature, drop it where it belongs, and download the signed PDF.

How do I use Sign PDF online?

Upload your file using the box above — drag it in, browse for it, or bring it in from your cloud storage. A preview appears so you can check you've picked the right file. Run Sign PDF, then download the result. You can rename it before you save it.

Is my file secure when I use Sign PDF?

Yes. The file you send to Sign PDF travels over an encrypted HTTPS connection and is processed automatically on our servers. It is never made public, never shared with anyone, and nobody reads it.

Does HuntPDF store my files after Sign PDF has run?

No. Your upload is deleted the moment Sign PDF finishes with it, and the file it produces is removed as soon as you have downloaded it, or when you upload another file, or when you close the page. Nothing is kept, and nothing is used to train anything.

Will the original quality and formatting be maintained?

Yes. The signature is placed onto the page and the rest of the document is left exactly as it was.

Can I use Sign PDF on mobile?

Yes. Sign PDF runs entirely in your browser, so it works on any modern phone or tablet — iPhone, iPad or Android — with nothing to install. You can upload straight from your device or from your cloud storage.

Can I rename my file before downloading it from Sign PDF?

Yes. The file Sign PDF gives you back keeps the name of the file you uploaded by default. If you'd rather call it something else, edit the name in the field next to the download button before you save it.

Do I need to install any software to use Sign PDF?

No. There is nothing to download, install or sign up for — Sign PDF runs in your browser and does the work on our servers, so it behaves the same on Windows, macOS, Linux, Android and iOS.

How long does Sign PDF take?

Most files are finished in a few seconds. A large or page-heavy file takes a little longer, because Sign PDF runs on our servers rather than on your device — but you won't be waiting around. You can upload files up to 250MB.

Is Sign PDF free to use?

Yes. Sign PDF is free, with no signup, no watermark on the result and no daily limit for normal use.