Unfold PDF Reader & Editor

Unfold PDF is a fast PDF reader, PDF viewer and PDF editor for Android. Open PDF files, search text, highlight and annotate, sign PDF documents, scan documents to PDF, merge PDF files, split pages, convert JPG to PDF and PDF to JPG, and password-protect PDFs — all in one lightweight app. Powered by the open-source PDFium engine, even long documents open quickly and text stays sharp at any zoom. Unfold PDF does not ask for "All files access": it only opens the PDFs and folders you choose. ■ Great for • Opening PDF attachments from email and messaging apps • Signing contracts, forms and agreements with your own signature • Students reading papers, textbooks and ebooks with highlights and notes • Scanning paper documents and receipts into PDF with your camera • Combining several PDFs into one or saving only the pages you need • Anyone who wants a light, fast PDF reader ■ PDF reader & PDF viewer 1. Fast, sharp viewing — continuous vertical scrolling or page by page. Double-tap or pinch to zoom; the visible area is re-rendered at that zoom so small print stays crisp. 2. Continue reading — every document remembers your last page and progress, one tap away on the home screen. 3. Search PDF — find words anywhere in the document, highlighted right on the page, even across line breaks. 4. Night mode & paper mode — dark pages that keep photos and charts in color, or a warm paper tone for long reading. 5. Table of contents, bookmarks & thumbnails — jump with the outline, bookmark pages, and skim with page thumbnails and a page slider. 6. Comfortable reading — distraction-free full screen, volume-key page turning, and autoscroll. Links and web addresses open with a tap. 7. Password-protected PDFs — enter the password to open locked files. ■ Select text & read aloud • Long-press to select text, adjust with handles, then copy or share • Highlight, underline or strike through selected text • Translate or search the web for any word • Read aloud (text to speech): follows along on the page and turns pages automatically, adjustable speed • Extract text: view and copy all text on a page ■ PDF editor & PDF signature • Annotate PDF with a pen (6 colors, 3 widths), highlighter, eraser and undo • Sign PDF: save your handwritten signature once and place it with a tap • Annotations are saved as standard PDF annotations, visible in other PDF apps and on your computer • Save to the original file or as a copy ■ PDF converter & PDF tools • Document scanner: the camera detects edges and straightens the page into a clean PDF • Image to PDF (JPG to PDF): combine photos and screenshots into one PDF • Merge PDF: join multiple PDF files into one • Split PDF / extract pages: save pages like 1-3, 7 as a new PDF • Organize pages: rotate, delete or extract pages from thumbnails • Add password to PDF / remove PDF password • PDF to JPG: save every page as an image, or the current page as PNG • Print PDF, share, and open with another app ■ PDF file manager • Recent files with first-page thumbnails and reading progress • Favorites, file name search, sort by date, name or size • Add folders such as Download or Documents to see every PDF inside ■ Privacy & permissions • No "All files access" permission — only the system file picker and folders you allow • Your PDF documents are processed on your device and never uploaded to a server ■ FAQ Q. How do I open a PDF I received? A. Tap the PDF file and choose Unfold PDF in "Open with". It will also appear in your recent files. Q. How do I sign a PDF? A. Open the document, tap Draw → Signature, draw and save your signature, then tap where it should go. Q. Where are my annotations saved? A. Tap the save icon at the top to write them into the PDF. If the original can't be changed, a copy is saved. Q. Can I search scanned PDFs? A. PDFs that contain text can be searched, selected and read aloud. Image-only scans have no text to search. Need a PDF reader, PDF viewer, PDF editor or PDF scanner? Try Unfold PDF.