T4UHub Tools › PDF Tools › Sign PDF

Sign PDF

Add your e-signature to PDF documents.

Open the Sign PDF →

About this tool

The Sign PDF is a fast, free, privacy-first pdf tool that runs in your browser — no signup, no watermark, works on mobile and desktop.

FAQ

Is the Sign PDF free?

Yes. The Sign PDF is 100% free with no signup, no watermark and no limits.

Is my data private?

Your data is processed in your browser and is not uploaded to a server.

Do I need to install anything?

No. It works in any modern browser on Android, iPhone, tablet and desktop.

Can I use it on mobile?

Yes — it is mobile-first with touch-friendly controls.

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