PDF Editor: Reader, Sign, Scan

PDF Editor: Reader, Sign, Scan (PDF4) is the all-in-one PDF app for Android: a fast PDF reader, a full PDF editor, a form filler and PDF signer, a document scanner and a PDF converter in one small, offline app. Edit PDF files, fill and sign PDF forms, annotate, merge, split, compress and scan to PDF, all in one place.

EDIT PDF
• PDF editor with a content editor: add text, images, stamps, watermarks and sound notes to any PDF file
• Page editor: reorder, rotate, extract and delete PDF pages, or rearrange pages by drag and drop
• Flatten annotations and form fields to lock your edits into the document
• Extract text from PDF documents

FILL AND SIGN PDF FORMS
• Fill PDF forms fast: text fields, checkboxes, radio buttons, list boxes and combo boxes, with autofill
• Create your own fillable PDF forms
• Sign PDF documents with your saved handwritten signature and place it anywhere on the page
• Add stamps to contracts, invoices and applications

PDF READER AND PDF VIEWER
• Fast PDF viewer for large files with smooth scrolling and zoom
• Search text inside PDF files
• Dark mode for comfortable night reading
• All PDF files on your phone in one list: favorites, rename, share and print

ANNOTATE PDF
• Highlight, underline and strikethrough text
• Draw and doodle with pen and marker
• Add sticky notes, comments, links and replies
• Markup PDF for study notes, proofreading and collaboration

PDF SCANNER: SCAN TO PDF
• Smart Scan: scan documents, receipts, notes, ID cards and whiteboards with your camera
• Automatic edge detection, crop, rotate and filters for clean, readable scans
• Turn multi-page scans into one PDF file and share it instantly

PDF CONVERTER AND PDF MAKER
• Image to PDF: convert JPG, PNG and photos to PDF from your gallery or camera
• PDF to image: export PDF pages as JPG or PNG pictures
• Create PDF from pictures with the free PDF maker in seconds

MERGE, SPLIT AND COMPRESS PDF
• Merge PDF files into one document and reorder them before combining
• Split PDF by page range or extract selected pages into a new file
• Compress PDF to reduce file size for email and messaging apps

PROTECT PDF
• Lock PDF with a password to protect confidential documents
• Unlock PDF: remove the password from files you own
• Open password-protected PDF files

WHY PDF4 PDF EDITOR
• PDF editor, PDF reader, PDF scanner and PDF converter in one free app
• Works offline, no account required, and your PDF tools run on your device
• Small download, fast startup, Material You design and dark mode
• Available in English, Spanish, Portuguese, German, French, Italian, Russian, Hindi, Indonesian, Malay and Nepali

PERMISSIONS
PDF4 uses the Android photo picker to import pictures, so it never needs access to your whole photo library. To list every PDF on your device on Android 11 and above, the app may ask for All files access; you can decline and pick files with the system file picker instead.

Whether you are a student annotating lecture notes, a professional signing contracts, or anyone who needs to edit PDF, fill PDF forms, scan to PDF or convert image to PDF, PDF Editor: Reader, Sign, Scan is the PDF app you can rely on. Download the free PDF editor and PDF reader now.

Recent changes:
• Fill and sign PDF forms; add text, images, stamps and watermarks
• New PDF editor: reorder, rotate and delete pages; draw, highlight and annotate
• Merge, split, compress, lock and unlock PDF files
• Scan documents to PDF and convert images to PDF
• Uses the Android photo picker, so no broad photo or video permissions
• Faster startup, Material You design, dark mode and bug fixes