Sign PDF: Fill Forms & Scan

Sign PDF is an app for signing PDF documents on your phone or tablet, without creating an account and without uploading your files to a server. All processing happens on the device and the original PDF stays unchanged.

SIGN A PDF IN SECONDS
- Create your signature by drawing it with your finger, typing it or using a photo
- Save several signatures and initials and reuse them any time
- Place the signature on any page and adjust its size, rotation and colour
- Undo and redo while you edit

FILL AND SIGN FORMS
- Add text, dates, checkboxes, images and stamps
- Fill the PDF form fields and save them into the document
- On-device text recognition suggests where the signature and date go, and you confirm

DOCUMENT SCANNER
- Scan multi-page documents with the camera
- Edge detection and perspective correction
- Colour, greyscale and black and white filters
- Review, reorder and remove pages before creating the PDF
- Turn photos from your gallery into a PDF document

OFFLINE OCR
- Text recognition in English and Spanish, on the device
- Produce a PDF with a searchable text layer
- Images are never sent to an external service

PDF TOOLS
- Merge several PDFs into one
- Split a PDF into separate pages
- Organise pages: reorder, rotate, duplicate, delete and extract
- Compress a document
- Add page numbers and watermarks
- Protect a PDF with a password
- Open protected documents by entering their password

YOUR LIBRARY, KEPT PRIVATE
- Search documents by name and browse real page thumbnails
- Mark favourites, rename, duplicate and delete
- Autosave and draft recovery if you close the app
- Open a PDF straight from other apps and from the file browser

PRIVACY
Documents, scans and signatures are stored in the app's private storage, encrypted with the system keystore and excluded from automatic backup. There is no user account, no document server, no advertising and no product analytics. PDF passwords are never stored.

NO SUBSCRIPTION
Every tool is available at no cost, including OCR and the advanced PDF tools. There are no in-app purchases, no adverts, no watermark on export and no daily document limit.

WHAT IT DOES AND WHAT IT DOES NOT
The app places a visual signature on the PDF: the equivalent of printing, signing and scanning, without the paper. It does not issue certificate-based digital signatures or qualified timestamps, and it does not send documents to other people for them to sign.

Available in English and Spanish, with light and dark themes and layouts for phone and tablet.