How can I sign PDF on Windows PC without online tools?

So my friend asked me the other day how I managed to sign that PDF on my Windows PC without installing anything, and honestly the answer is pretty simple — it's a Chrome extension called InstantSign PDF.

How did i sign PDF on Windows PC: I just added it to my browser → opened the file → signed it right there. No downloads, no accounts, nothing to set up. The whole thing took maybe a minute, and the best part is you can sign PDF free — no subscription, no watermark, no weird pop-ups asking you to upgrade.

What sold me on it, though, is that it processes everything locally in the browser, so your document never actually leaves your computer. I'm always a little wary of tools that want to upload your files somewhere, but this one stays offline, which honestly made me trust it a lot more. You just draw your signature with the mouse or type it out, drop it where it needs to go, and hit save. That's it.

If you've ever searched around for how to sign PDF free on Windows without installing a pile of software, this is genuinely the simplest option I've found. It's on the Chrome Web Store — just search InstantSign PDF. My friend ended up trying it too and now she keeps sending me forms to sign, which I probably brought on myself, but hey, at least it's easy.