Tutorials · September 28, 2026 · 4 min read
How to sign a PDF on Android (without printing it)
Most Android phones have no built-in PDF signer. Here is what does work, whatever phone you have.
iPhones have Markup built in. Android is less consistent: what your phone can do with a PDF depends on its maker and on which apps you have installed. The good news is that one method works on every Android phone, and it needs nothing more than the browser you already use.
First, check what your phone already has
Open the PDF from your email or your Files app and look at the viewer it opens in. Some viewers, including recent versions of the Google Drive app and the tools on many Samsung phones, let you draw on a PDF with a pen icon. If yours does, you can sign with your finger and save the result.
The limits are the same as drawing on paper with a marker: the signature is not saved for next time, adding a date means drawing it too, and it is easy to land slightly off the line on a small screen. For a one-off, that is often fine.
The method that works on any Android phone
Open esign.website in Chrome, or whichever browser you use. There is nothing to install and no account to create.
Tap Choose a document and pick the PDF from your downloads or files. It opens in the browser; the file is not uploaded.
The signature panel appears below the document. Draw your signature with your finger, or type your name and pick a script font, then tap Use this signature. It appears on the page: drag it onto the line and drag its corner to resize it.
Add the date, your printed name, initials or checkboxes from the toolbar above the page. Each page keeps its own fields, so a long agreement does not become a long session of pinching and zooming.
Tap Download PDF and choose Standard PDF. The signed copy is saved to your Downloads folder with a watermark, ready to attach to a reply. Clean PDF gives a clean copy for $1, and five are $3.
What about the Acrobat app?
Adobe Acrobat Reader for Android has a Fill & Sign tool and works well. It is another app to install, it will ask you to sign in to an Adobe account for some features, and sending documents to other people for signature is part of the paid plan. If you already use it, carry on. If you only need to sign the occasional PDF, the browser is lighter.
Before you send it
Open the signed file once and check it: signature on the right page, correct date, nothing covering the printed text.
One thing worth checking on scanned documents: a page scanned sideways is often stored that way with an instruction to display it upright, and some apps place a signature according to the stored page rather than the one you see. If the signature appears somewhere unexpected or turned sideways, that is why. The browser signer handles those pages correctly, because it places the signature on the page as displayed.