PDFmark

PDFmark — Offline PDF Reader & Annotator Read, annotate, and export your PDFs without ever connecting to the internet. PDFmark is built for privacy-first users who want a fast, reliable PDF tool that keeps your files entirely on your device. Why PDFmark? Unlike most PDF apps, PDFmark does not request internet permission. Your documents, annotations, and activity never leave your phone. No analytics, no ads, no cloud uploads, no tracking. Just a clean, focused PDF tool that works completely offline. Annotate with Ease Mark up your documents with highlight, underline, and freehand ink tools. Choose from multiple colors to organize your notes visually. Smooth Bézier curves make freehand drawing feel natural and precise. Tap any annotation to select and delete it, or use the eraser tool for quick cleanup. Undo and redo let you work with confidence. Free users get up to 10 annotations per document — enough to evaluate every feature before deciding to upgrade. Read Comfortably Navigate large documents effortlessly with smooth vertical scrolling, pinch-to-zoom, and a fast-scroll scrubber with page preview. Tap to enter immersive reading mode that hides toolbars for distraction-free reading. PDFmark handles documents of any size without slowing down — tested on 700+ page documents with zero lag. Search and Navigate Find what you need with full-text search across all pages — completely free for all users. Browse the built-in table of contents to jump directly to chapters and sections. View all your annotations in a summary list and tap any entry to jump to that page instantly. Export Your Work Save a flattened copy of your annotated PDF with all markups permanently baked into the pages. Choose your save location and track export progress in real time with the option to cancel. Export your annotation summary as a CSV file for use in spreadsheets, study notes, or reference documents. Organize Your Library Switch between grid and list views to browse your recent documents with thumbnail previews. Sort by date or name in ascending or descending order. PDFmark remembers where you left off in each document so you can pick up right where you stopped. Your preferred view and sort settings persist between sessions. Secure Your Documents Enable biometric lock to protect your PDFs with fingerprint or face authentication. PDFmark locks immediately when you leave the app, keeping sensitive documents like contracts, financials, and personal files completely private. Choose Your Theme Switch between light mode, dark mode, or follow your system setting automatically for a comfortable reading experience day and night. Unlock Pro — $0.99 One-Time Purchase PDFmark is generous with its free tier. Every user gets full reading, search, table of contents, and up to 10 annotations per document with no time limits and no ads. When you are ready for more, Pro unlocks the full toolkit for a single payment of $0.99: - Unlimited annotations — mark up entire textbooks, contracts, and reports without limits - PDF export — save annotated copies with your highlights and notes permanently applied - Full color palette — eight colors to color-code your annotations by topic, priority, or category - CSV annotation export — extract your highlights and notes into spreadsheet format for studying, research, or record-keeping - Biometric app lock — protect your documents with fingerprint or face authentication No subscription. No recurring fees. No internet required. Pay once, own it forever. Your purchase restores automatically on any device signed into the same Google account. Permissions PDFmark uses minimal permissions. File access happens only through the system file picker. Biometric authentication uses secure system APIs. No internet permission is requested or used. Your documents and annotations never leave your device.