Folio: PDF Reader & Editor

Folio is a fast, all-in-one PDF app: read any document for free, then unlock scanning, annotation, e-signatures, and a full toolbox of PDF editing tools with Folio Pro. FREE PDF READER • Smooth, high-performance rendering for huge files — even 1,000+ page documents • Full-text search with highlighted results and instant page jumps • Outline/bookmarks navigation, page thumbnails, and your own saved bookmarks • Tap links inside the PDF to jump to pages or open the web • Fit-width and fit-page zoom modes, with pinch-to-zoom on any page • Text-to-speech read-aloud, so you can listen to any document • Light, dark, and system theme; keep-screen-on while reading • Open PDFs directly from other apps, email, or your files • Password-protected PDF support SCAN DOCUMENTS • Turn your camera into a scanner — auto edge detection and cropping • Import existing photos from your gallery as scanned pages • Color, grayscale, black & white, and whiteboard filters • Reorder, retake, or delete pages before saving • Save as PDF or JPG, or append new pages to an existing PDF • Optional OCR makes your scans searchable, with an invisible text layer under the image ANNOTATE & SIGN • Highlight, underline, and strike through text • Draw freehand with a pen tool, in any color and stroke width • Add sticky notes, text boxes, shapes, and stamps (like "Approved") • Full undo/redo history while you mark up a page • Create a signature by drawing it, typing it in a handwriting-style font, or capturing a photo of your signature • Place your signature or initials anywhere on any document • All annotations are written into the real PDF file, so they open correctly in any other PDF viewer PDF TOOLS • Organize: reorder, rotate, delete, duplicate, and insert pages • Merge multiple PDFs into one, or split and extract pages • Add page numbers, watermarks, and headers/footers • Compress large PDFs to save space • Fill in PDF forms and edit document metadata • Set or remove a password on any PDF • Batch-process multiple files at once WHY FOLIO • Reading is always free — no account, no watermark, no page limit • A clean, modern interface built with the latest Android design guidelines • No ads inside your documents • Your files stay on your device — nothing is uploaded to a server Upgrade to Folio Pro anytime to unlock scanning, annotation, signatures, and the full tools suite, with a monthly, yearly, or one-time lifetime purchase.