You can sign a PDF on Android without downloading any app — just use Chrome and draw your signature with your finger. This guide shows you how to sign a PDF on any Android device in under two minutes, for free.
Open Chrome (or any browser) on your Android phone or tablet and navigate to pdfeditor.onl/sign-pdf. The signing tool is fully optimized for touch screens.
Tap the upload area. Android's file picker will open — navigate to your Downloads, Google Drive, or any folder where the PDF is stored.
Tip: If the PDF arrived as a Gmail attachment, tap the download icon on the attachment first to save it to your device, then upload it here.
Select Draw Signature mode. Use your finger (or a stylus) to draw your signature in the signature pad. Try a few times — tap Clear to redo. Choose pen size and color (black or blue ink look most professional).
After drawing, the signature appears as a draggable overlay on the PDF page. Drag it to the signature line. Pinch to resize if needed.
Tap Download PDF. Chrome saves the signed PDF to your Android Downloads folder. Open it in any PDF viewer to confirm the signature is correctly placed.
Yes. The S-Pen works as a touch input in the browser signature pad. You will get a more precise signature than with a finger.
Yes. The signature is embedded as a vector image in the PDF — it renders identically on iOS, Windows, Mac, and any PDF viewer.
For most everyday documents, yes. For regulated contracts requiring a certified electronic signature with an audit trail, use a dedicated e-signature service.