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How to Sign a PDF on Android

Android has no built-in PDF signing — but you don't need to install anything. Draw and place your signature right here in Chrome.

Add a PDF to sign

or drag and drop a file here

Signing in Chrome (no install)

  1. Tap Choose file above and pick the PDF.
  2. Draw your signature with a finger — turning the phone sideways gives a wider box — and tap Use this signature.
  3. Tap the page preview where the signature belongs and set its size with the slider.
  4. Tap Sign PDF and download the signed copy from the notification shade.

Everything happens on the phone. The signature is never saved anywhere — close the tab and it's gone.

What about the apps you may already have?

  • Google Drive — its PDF viewer has a pen annotation mode, so you can scribble a signature. But it's freehand drawing straight onto the page: no way to redo the signature separately, resize it, or place it precisely.
  • Adobe Acrobat Reader app — has a free Fill & Sign feature that works well, if you're fine installing a large app and signing in with an Adobe account. Your saved signature is stored with the app.

For a one-off signature on a lease or a form, the browser tool above is the shortest path: no install, no account, nothing retained afterwards.

Is this a legal signature?

It places a drawn image, not a certificate-based digital signature — same as Drive's pen or Acrobat's basic Fill & Sign. Details on the main Sign PDF page.

Sign PDFs on other devices