PDF Foundry: Edit, Sign, Merge

PDF Foundry is your fast, private document workstation for Android, with every document operation running on-device. Designed for professionals, students, and privacy-conscious users, PDF Foundry handles all your PDF and document workflows directly on your device — with zero cloud uploads and zero subscriptions.

⚡ 100% LOCAL & PRIVATE PROCESSING
Your documents contain your most sensitive data: contracts, medical records, financial statements, and personal identity documents. Unlike cloud-based PDF tools, PDF Foundry processes every file entirely within your device's memory. No document is ever uploaded to a remote server.

🛠️ COMPLETE DOCUMENT TOOLKIT

• Merge PDFs: Combine multiple PDF files into a single, cohesive document in seconds. Reorder inputs seamlessly, with bookmarks and form fields carried through.
• Split & Extract Pages: Split large files by custom page numbers or ranges (e.g. 1, 3, 5-10) with one tap.
• Edit, Rotate & Reorder: Interactive grid view allows you to rearrange pages, delete unwanted pages, or rotate orientations effortlessly.
• Compress PDF: Reduce file sizes with customisable compression tiers (Low, Medium, High) while preserving text clarity.
• Password Protection & Unlock: Encrypt sensitive documents with 256-bit AES password security, or remove passwords from files you can already open.
• Digital Signatures & Vault: Draw, save, and manage your signatures in a secure, sandboxed local vault. Stamp signatures onto the first page, last page, or all pages with precise positioning.
• Scan Paper: Capture physical documents with your camera and turn them straight into a clean, multi-page PDF.
• Convert Images to PDF & PDF to Images: Transform photos, receipts, and scans into clean PDF documents, or extract PDF pages as high-resolution images.
• Watermark & Page Numbers: Apply custom text watermarks with adjustable opacity and angle, and add professional headers/footers with automated page numbering and legal Bates numbering.
• Sanitise Metadata: Strip document authors, creation dates, camera tags, and sensitive editing history before emailing or publishing.
• Listen to Your Documents: Have a PDF read aloud with adjustable speed, so you can get through a long document hands-free.
• Text Extraction: Pull the text out of your PDFs entirely on-device and copy it anywhere. Works with digital PDFs that carry a text layer; image-only scans are detected and clearly reported rather than returning an empty result.
• Encrypted Signature Vault: your saved signatures are sealed with a hardware-backed key, so they are unreadable even from a backup or a lost device.
• Optional Screenshot Blocking: a setting that hides your documents from screenshots, screen recording and the recent apps preview.

✨ CLEAN, MODERN & DISTRACTION-FREE

• Light, dark, or follow your system theme — the dark theme is tuned for OLED displays and battery savings.
• Full Android 15 & 16 support with Material You dynamic colour icons.
• Available in 15 languages: English, Spanish, Portuguese (Brazil), French, German, Italian, Russian, Turkish, Arabic, Hindi, Indonesian, Japanese, Korean, Simplified Chinese, and Vietnamese — including full right-to-left layout support.
• Built to work at any text size, and labelled throughout for screen readers.
• No account registration, no login walls, and no paywalls.
• Minimal, non-intrusive advertising with a strict 15-minute cooldown between document tasks.

🔒 PERMISSION TRANSPARENCY
• Storage / Documents (SAF): Access only the specific files you select.
• Camera: not requested. Scanning hands off to your device's own camera app, so PDF Foundry never holds camera access.
• Internet: Used solely for Google AdMob and privacy consent management (UMP).

Experience the security and speed of a truly local document workstation with PDF Foundry.