Take a photo opens your camera
On touch devices, Take a photo opens the rear camera directly. If the browser asks for camera access, allow it for this page. You can also pick an existing photo instead.
Sign a PDF on Your Android Phone
Open this page in Chrome or another mobile browser, pick the PDF from your phone, sign with your finger, and download the signed copy. No app needed.
Drop your PDF here
or click to browse
PDF up to 10 MB
Private by design. Your PDF is processed on your device and never uploaded.
How to sign a PDF on an Android phone
- 01
Download the PDF first
If it is a Gmail or chat attachment, tap its download icon so it is stored on the phone. A file that only previews is not on the device yet.
- 02
Pick it in the tool above
Tap the upload area and choose the PDF from Downloads, Drive, or any folder the file picker shows. It opens on your device and is not uploaded.
- 03
Add your signature
Draw signature opens a full-screen pad for your finger or stylus. Or tap Take a photo to sign on paper and photograph it, and the background is removed for you.
- 04
Place it and download
Drag the signature onto the line, size it with the corner handles, then tap download. The signed PDF is saved to your Downloads folder.
Things that are specific to Android
A photo check before processing
Before the background is removed, PureSign warns if the photo is too dark, overexposed, low contrast, or blurry, and lets you retake or use it anyway.
Stylus support
On devices with a pressure-sensitive stylus, stroke thickness follows pressure. Finger strokes follow drawing speed.
Where the file lands
Chrome saves downloads to the Downloads folder and shows a notification you can tap to open or share the file.
If something does not work
The file picker does not show the PDF
Open the picker's menu and switch to Downloads, Files, or the Drive tab. A PDF that only exists as an email preview has not been saved yet.
"We couldn't read this PDF"
The file may be damaged or not really a PDF. Open it in another reader to check, or ask the sender to export it again.
The page scrolls while I draw
Dismiss the cookie banner first, because it can sit over the page. Then use Draw signature, which opens a full-screen pad that does not scroll under your finger.
Frequently asked questions
Can I sign a PDF on Android without an app?
Yes. PureSign works in your mobile browser. Pick the PDF, add your signature, and download the signed copy.
Where is the signed PDF saved?
In your Downloads folder, the same place as other downloads. Chrome shows a notification you can tap to open the file.
Can I use a photo of my signature?
Yes. Tap Take a photo or choose an image. PureSign removes the paper background and uses the result as your signature.
Does it work on a tablet?
Yes. Larger screens get a wider layout, and the same touch handles work.
Is my PDF uploaded?
No. Your PDF is read and signed inside your browser tab and is never uploaded to our servers, whether you are a guest or signed in. The only file we ever store is a signature you choose to save to your vault after signing in.
Can I sign a PDF with more than one page?
Guests and free accounts can sign single-page PDFs, up to 10 MB. Multi-page signing is part of the Pro plan, which also raises the PDF limit to 100 MB. If your file has several pages and you only need one signed, split out that page first.
Related
Sign a PDF on iPhone
Sign from Safari with your finger, no app. Where the PDF comes from and where it goes.
Add signature to PDF
Place a signature, initials, a date, or a check mark exactly where a PDF needs one.
How to photograph your signature
A checklist for the photo, plus the cause and fix for common problems.
Sign a PDF with a signature image
Use a PNG, JPG, or photo of your signature you already have. Photos are cleaned up automatically.