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    Sign PDF

    Draw your signature with mouse or finger, place it on the page and download the signed PDF.

    or drop them here Your files never leave your device

    How it works

    1. Select your PDF file.
    2. Draw or type your signature.
    3. Tap the page to place it, then download.

    Frequently asked questions

    Is this a legally binding e-signature?

    It is a simple electronic signature – an image of your signature. That is enough for many everyday documents; some contracts require a qualified electronic signature.

    Can I sign on my phone?

    Yes. Just draw your signature with your finger on the screen.

    Are my files uploaded?

    No. HowDoIPDF runs entirely in your browser. Your files are not sent to any server and stay on your device – ideal for confidential documents too.

    Is “Sign PDF” free?

    Yes, completely free – no sign-up, no watermark and no file size limit.

    Does it work on my phone?

    Yes. The tool works in any modern browser on iPhone, iPad, Android, Windows, Mac and Linux – no app needed.

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