PDF Editor: Reader, Sign, Scan
PDF Editor: Reader, Sign, Scan has 25,818 installs, #7,024 of 93,337 in Productivity.
Description
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.
Growth change in installs
| Per | Growth | Growth % | Actual change | Measured over |
|---|---|---|---|---|
| day | Not enough history yet | |||
| week | Not enough history yet | |||
| month | Not enough history yet | |||
| year | Not enough history yet | |||
How these figures are measured
Change in installs, scaled to each window from the real gap between crawls. A window needs a full period of history before it reports anything.
Tracking since 09/26/2026. History accumulates as changes are observed — check back soon.
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