Brain PDF: Desktop PDF Editor

Brain PDF is a desktop-class PDF editor, reader and annotator for Android phones and tablets. Built for real work with a keyboard and mouse or with touch, it brings a complete desktop-style PDF workspace to your device. VIEW AND NAVIGATE • Single-page, continuous and two-page spread reading with cover page support • Smooth zoom up to 500%, pinch, fit to page, fit to width and marquee zoom • Night mode, sepia and high-contrast page colours • Find and advanced search, bookmarks, page thumbnails and a comments list EDIT AND ORGANIZE • Edit existing text right on the page, in the document's own font • Edit images: move, resize, crop, replace, copy and paste, save or delete • Add text boxes, images, links, headers, footers, page numbers and watermarks • Sort, reorder, rotate, extract, duplicate, delete and split pages • Combine several PDFs and images into one document • Compress: choose the image quality and see the new file size before you save ANNOTATE AND REVIEW • Highlight, underline, strikethrough and squiggly markups snapped to text • Sticky notes, text boxes, callouts and shapes (rectangle, oval, line, arrow, polygon, cloud) • Freehand drawing with stylus pressure, and an eraser • Standard, dynamic and custom image stamps FILL AND SIGN (OFFLINE) • Fill in PDF forms: text fields, check boxes, radio buttons and dropdowns • Drawn, typed or image signatures and initials, saved for reuse • Offline signature requests with a guided signer flow and an audit trail • Digital certificate signing (PKCS#12) and signature validation SCAN, OCR AND CONVERT • Document scanner with automatic cropping and perspective correction • On-device OCR turns scans into searchable, selectable text • Export to Word (.docx), Excel (.xlsx), PowerPoint (.pptx), RTF, HTML, text and images (PNG/JPEG) PROTECT AND REDACT • AES-256 password protection and permission controls (printing, copying) • Permanent text and area redaction, and removal of hidden information • Compare two versions of a document, with the changed words highlighted PRIVATE AND OFFLINE • No account and no ads • Your documents are processed on your device and never uploaded

Bug fixes and performance improvements.