Scan and sign a PDF on Android, offline, without uploading it
Most free PDF apps send your documents to a server, add a watermark or ask for an account before you can sign. VX PDF does scanning, signing, notes, merging and splitting on the phone itself.
How to do it with VX PDF
- Open VX PDF and tap Scan. Point the camera at the page; edges and straightening are automatic. Add more pages, then save one PDF.
- Tap Make text searchable so you can search any word later (text reading also runs on the phone).
- Open the PDF, tap Sign, draw your signature with your finger, drag and resize it, and save a signed copy. Turned (landscape) pages work too.
- Need more? Highlight text or add a note, merge several PDFs, split pages, or send it to VX Compressor to make it small enough for an email or form.
At a glance
| Scan | Up to 50 pages into one PDF, automatic edges and clean-up |
|---|---|
| Edit | Sign, highlight, notes, merge, split, reorder, rotate, delete pages, images to PDF |
| Big files | Merges files of hundreds of MB without running out of memory |
| Privacy | Files never leave the phone; no account |
| Price | Free, no watermark |
| New in 0.2 | Search inside PDFs, highlights and notes, very large merges (rolling out November 2026) |
Questions
How do I sign a PDF on Android for free?
Open the PDF in VX PDF, tap Sign, draw your signature and place it. It saves a signed copy and keeps the original.
Can I scan documents to PDF without uploading them?
Yes. VX PDF's scanner and text reading run on the phone, offline.
Can I search text in a scanned PDF?
Yes, after Make text searchable. Search then finds any word and highlights it on the page.
How do I make a PDF smaller for an upload form?
Share it from VX PDF to VX Compressor and pick the size the form allows, for example 200 KB.