DocuStudio Offline PDF Scanner

DocuStudio is an offline PDF scanner and PDF editor for your phone. Scan documents to PDF, then merge, compress, sign and lock them with 34 PDF tools. No account and no cloud uploads: your files stay on your device.

Many PDF websites upload your contracts, IDs and bank statements to a server before they can merge, compress or convert them. DocuStudio does this work on your phone, so the PDF tools keep working on a plane, in a basement or anywhere with no internet.

DOCUMENT SCANNER
• Scan to PDF: documents, receipts, notes, ID cards, books and whiteboards
• Automatic edge detection, smart crop and perspective correction
• Filters and automatic clean-up of stains and fingers
• Import photos from your gallery and save a multi-page PDF
• OCR text recognition: make scanned PDFs searchable and copyable (Latin-script languages such as English, Spanish, French and German)

34 PDF TOOLS IN ONE PDF EDITOR

Organize
• Merge PDF: combine several PDF files into one document
• Split PDF: into single pages or every N pages
• Organize pages: reorder, duplicate or add blank pages
• Extract pages, delete pages, rotate pages and insert a PDF anywhere

Edit and annotate
• Sign PDF: draw your signature once, save it and place it on any page
• Fill PDF forms: text fields, checkboxes and drop-down lists
• Add a watermark: text or logo, with opacity and angle control
• Page numbers, Bates numbering, header and footer
• Crop pages, edit bookmarks, add attachments and remove annotations

Convert
• Image to PDF and JPG to PDF: turn photos into a clean PDF
• PDF to JPG or PNG at up to 300 DPI
• Extract images and extract text from a PDF
• Pages per sheet (N-up) and resize pages to A4, Letter or Legal

Optimize and repair
• Compress PDF: reduce PDF size for email, job portals and online forms
• Repair damaged or corrupted PDF files
• Flatten forms and annotations so they can't be edited
• Convert a PDF to grayscale for cheaper printing

Security and privacy
• Lock PDF with a password (AES-256) and limit printing or copying
• Unlock PDF or change its password when you know the current one
• Redact sensitive words: the real text is removed, not just covered
• Remove hidden data such as metadata, scripts and embedded files
• Edit PDF metadata and view a full PDF info report

PRIVATE BY DESIGN
• On-device processing: your documents are never uploaded
• PDF tools run on your phone with no internet. The scanner and OCR use a Google Play services module that may need internet once to download
• No sign-up, no login, no account
• Ads, analytics and crash reports use the internet when it is available, but your documents are never sent
• Open PDFs and images shared from your file manager, email or chat apps

FAST AND SIMPLE
• Built-in PDF reader: open, read and search a PDF, including password-protected files
• Light and dark mode
• Step-by-step tool screens: pick a file, adjust, save
• Recent documents, so you can find every scan again

MADE FOR
Students scanning notes and assignments. Freelancers signing contracts. Small businesses sending invoices and receipts. Anyone who needs to scan, sign or shrink a PDF in seconds.

DOCUSTUDIO PRO
The document scanner and core PDF tools are free to use with ads. The free version limits how many files you can merge or convert at a time, and a short ad adds more. Seven premium tools (OCR, Redact, Repair, Watermark, Flatten, Remove Hidden Data and Metadata) unlock for the session with a short ad. Pro removes ads and limits. Choose weekly, monthly or a one-time lifetime purchase, and manage or cancel any subscription in Google Play.

DocuStudio: the offline PDF scanner and PDF editor that keeps your documents yours.