Add a signature to any PDF: draw it, type it in a handwriting font or upload an image, then position, resize and export the signed document.
Sign PDF lets you add a signature to any PDF document by drawing it with your mouse or finger, typing it in a handwriting-style font, or uploading a photo of your handwritten signature. Once created, the signature can be dragged onto the page, resized with handles, and positioned exactly where it needs to go, with the whole workflow completed in the browser.
It covers the everyday need to sign a contract, form or agreement without printing, physically signing and re-scanning the document. Positions are stored as percentages of the page, so what you see in the preview matches the final exported PDF precisely, and multiple signature instances can be added if a document needs signing in more than one place.
Drawing gives the most natural look, typing is fastest for a quick sign-off, and uploading an image lets you reuse an existing scanned signature — covering different preferences and use cases in one tool.
Resize handles and arrow-key nudging let you position the signature exactly on a signature line or initials box, and percentage-based positioning means the exported file matches what you saw in the preview.
The whole sign-and-return workflow happens digitally, which is faster than printing a document, signing it by hand and scanning it back in, especially for agreements that need a same-day turnaround.
In most jurisdictions, including under the US ESIGN Act and the EU eIDAS regulation, a signature applied with clear intent to sign is legally binding for everyday agreements such as contracts, leases and consent forms. Certain deeds, wills and notarised documents still require a qualified digital certificate or wet-ink signature, so check requirements for anything unusually formal.
After dragging the signature roughly into place, use the resize handles to match the size of a printed signature line, then use the arrow keys for pixel-level nudging. Because positions are stored as page percentages rather than fixed pixel coordinates, the signature lands in the same relative spot regardless of how the PDF is later viewed or printed.
A signature drawn directly with a mouse or touchscreen tends to look more natural than a low-resolution photo of a paper signature, which can appear pixelated once resized. If uploading an image, use a clear, well-lit photo or scan cropped tightly to the signature itself.
In most jurisdictions — including under the US ESIGN Act and the EU eIDAS regulation — a signature applied with clear intent is binding for everyday agreements. Some deeds and notarised documents still require a qualified digital certificate.
Drag it onto the page, resize with the handles and nudge with the arrow keys. Positions are stored as page percentages, so the export matches the preview exactly.
Yes. Sign PDF on Klipza is completely free with no account, no subscription and no watermark on your files, and there is no daily usage limit.
Processing happens locally in your browser wherever technically possible, so your files are not uploaded to a server, stored or shared with third parties.
Yes. It is fully responsive and runs in any modern browser on Android, iPhone, iPad, Windows and macOS — nothing to install.