Does Android have a built-in way to sign a PDF?

No dedicated one. The Google Drive app can draw on a PDF with a pen in its annotation mode, which works as a rough signature, but there is no signature pad, no saved signature and no typed option. Samsung and other viewers vary by phone.

Can I sign a PDF on Android without uploading it to Drive?

Yes, with the browser tool. Open it in Chrome, pick the PDF from your phone's storage, sign, and download. The file never goes to Drive or any server; it is read and written on the phone.

How do I sign with my finger on an Android phone?

In the browser tool choose Draw, sign in the pad with a finger (or a stylus on a tablet), and tap Use. The signature is placed on the page where you tap; pinch to zoom the page first for better control.

Is a signature added this way legally binding?

It is a visual signature, the electronic equivalent of signing with a pen, which is accepted for most everyday agreements. It is not a cryptographic digital signature that certifies the document, and the tool says so on the page rather than implying otherwise.

How to sign a PDF on Android

Unlike iPhone and Mac, Android does not ship a signature tool: Google Drive can draw on a PDF with a pen, which passes for a signature if your handwriting cooperates, and that is about it. A browser tool in Chrome gives you a proper signature pad without an app.

Is there a built-in way on Android?

No. Android has nothing built in for this, and the closest things get in the way:

Open the PDF in the Google Drive app and tap the pen (Annotate) icon, if your version shows one. You can draw with a pen tool, which can serve as a hand-drawn signature.
Tap Save. Drive writes the annotation into a new version of the file.

What that means

No signature tool as such: nothing stores a signature for reuse, and there is no typed option.
Drive's annotation is only available in the Drive app, and the file has to be in Drive first.
Manufacturer viewers vary; many Android phones open PDFs with no editing at all.

Do it in the browser instead

The same Sign PDF tool as the main page, running in Chrome on Android. Nothing is installed and the file is processed on your device.

Drop your PDF here

PDF · up to 100 MB · draw, type or upload a signature

Processed in your browser. This file never leaves your device.

01
Open the PDF
Open the tool in Chrome, tap Choose file, and pick the document from your phone's file picker or Drive.
02
Create a signature
draw it on the pad, type it, or upload a photo of your signature
03
Download the result
Tap Download. The signed file is saved to Downloads; share it from Files, Gmail or WhatsApp.

Google Drive or the browser tool?

	Built in on Android	PDF Spree
Cost	No dedicated tool	Free, no account
Text stays selectable	Not applicable	Yes
File leaves your device	Drive: yes, to Drive	No — processed in the browser
Works on other devices	No, this platform only	Yes, any modern browser

How to sign a PDF on Android

Is there a built-in way on Android?

What that means

Do it in the browser instead

Open the PDF

Create a signature

Download the result

Google Drive or the browser tool?

Sign PDF on Android: questions

The same task on other devices

More PDF tasks on Android

Is there a built-in way on Android?

What that means

Do it in the browser instead

Open the PDF

Create a signature

Download the result

Google Drive or the browser tool?

Sign PDF on Android: questions

Does Android have a built-in way to sign a PDF?

Can I sign a PDF on Android without uploading it to Drive?

How do I sign with my finger on an Android phone?

Is a signature added this way legally binding?

The same task on other devices

More PDF tasks on Android

Related tools