Sign a PDF — without uploading it

Load a PDF, draw or type your signature, click where it should go, and download the signed file. The PDF never leaves your device — the rendering and signing engines are bundled inside this page.

Drop a PDF here or click to browse.

Everything happens locally — nothing is uploaded.

Loading PDF engine…

Quick start

Open your PDF. It renders right in this page — the file never leaves your device.
Draw your signature with a mouse, trackpad, pen or finger, or type your name in a handwriting font.
Click on the page where the signature belongs. Resize it with the width control, drag it into position, place it again on other pages if needed.
Save the signed PDF — you get the original document with your signature embedded, ready to email.

Good to know

This is a visual signature. It embeds your signature image into the page — exactly like printing, signing and scanning, but without the printer. It is not a cryptographic / certificate-based digital signature, and it won't populate Adobe-style form signature fields.
Nothing uploaded. pdf.js renders the pages and pdf-lib embeds the signature, both bundled in this file. Disconnect from the internet after loading — signing still works.
Original preserved. The signed output is a new download; your original file on disk is never modified.
Scanned pages welcome. Works on image-only scans too, since placement is visual.

This page makes zero network requests after it loads. Your PDF is rendered and modified entirely inside this tab — pages are drawn to a canvas locally, and the signed file is assembled in memory before your browser saves it to your own disk.

Bundled open-source engines: pdf.js (Apache-2.0) and pdf-lib (MIT). Full license texts are distributed alongside this file.

What is this page?

This is the real PDF Signature Inserter — the same tool Untracked sells as a download — running free, right here in your browser. Your files are processed entirely on your own device: nothing is uploaded, no account is needed, and the page makes no network requests after it loads. You can verify that yourself: load the page, open your browser's network inspector, or even disconnect from the internet and keep using it.

Free page vs. the €6 download

Here (free): unlimited single files — one at a time, as many as you like, forever. Counted only in your own browser (localStorage): no cookies, no analytics, nothing that identifies you.

The download (€6, once): batch/folder processing, ZIP export, and the tool as a single HTML file that runs offline forever on any computer you own — even with no internet at all. Plus the commercial-use licence. Full details →

Questions people ask

Does my document get uploaded anywhere?

No. The PDF renderer (pdf.js) and the signing engine (pdf-lib) are bundled inside this page — there is no server behind it. Load it, disconnect from the internet, and signing still works.

Is this a legally valid signature?

It's a visual signature: your signature image embedded into the page — the digital equivalent of printing, signing and scanning back. Whether that satisfies a given recipient or process depends on them; for certificate-based signing you need a different tool.

Can I place my signature on several pages?

Yes — place it as many times as you like, on any page, at different sizes. Each placement is draggable until you save, and the signed output is a fresh download (your original file is never modified).

What's the difference between this free page and the paid download?

This page signs unlimited single PDFs, one at a time, and lives on this website. The €6 download is the same signer as a single file — no limits, offline forever, on any computer.