PDF Master: Unlock & Edit PDF

Unlock, edit, sign, merge, annotate, and protect PDF documents 100% offline with complete on-device privacy.

Rating 4.9 ★★★★★

Target Android Android 14+ (SDK 37)

Architecture Jetpack Compose M3

Data Security Zero Cloud Uploads

1. Instant PDF Unlocker

2. Built-in PDF Editor

3. Digital Signatures & Seals

4. Complete PDF Toolbox

🔓 1. Unlock Password-Protected PDFs

Enter your password once and permanently unlock salary slips, bank statements, and invoices for hassle-free printing and archiving.

📝 2. Annotate, Highlight & Edit

Draw, highlight, underline, add sticky notes, and insert text boxes directly on any PDF document with high-precision rendering.

✒️ 3. Natural Electronic Signatures

Sign contracts, tax files, and agreements with your finger or stylus. Save reusable signatures with transparent backgrounds.

🛡️ 4. 100% On-Device Privacy

Zero cloud uploads. All document modifications, conversions, and rendering happen strictly within your phone’s sandbox memory.