Complete Private PDF Toolkit
Every tool runs 100% locally inside your web browser. No subscriptions, no page limits, and zero cloud uploads.
PDF Highlighter & Markup Suite
Highlight text in vibrant colors, draw freehand annotations, drop sticky note comments, and add callout boxes.
- Multi-color highlighter
- Freehand pen & signatures
- Sticky note pins
- Vector callout boxes
Freehand Signatures & Official Stamps
Draw digital signatures with touchpad or stylus, apply official APPROVED / CONFIDENTIAL stamps, and sign agreements.
- Touchscreen stylus support
- Official approval stamps
- Date inlay markers
- Zero account signup
Page Organizer & Rotator
Visually rotate upside-down pages by 90° or 180°, reorder pages via drag & drop, duplicate pages, or delete unwanted sheets.
- 90° / 180° page rotation
- Drag & drop reordering
- Insert blank pages
- Batch select actions
Private Document Redaction Tool
Permanently blackout confidential Social Security numbers, bank accounts, and sensitive names with vector masks.
- Unrecoverable blackout masks
- Permanent stream flattening
- Zero cloud leakage
- HIPAA & GDPR ready
Merge & Combine PDF Files
Combine multiple PDF files into one clean document with zero cloud upload delays and no file size restrictions.
- Combine unlimited PDFs
- Preserve original bookmarks
- Zero upload wait time
- 100% free forever
Split & Extract PDF Pages
Extract specific page ranges or split large books and tax dossiers into standalone lightweight PDF files.
- Custom page range extraction
- Visual page selector
- Instant split preview
- Lossless vector output
Export PDF Pages as PNG
Convert and save any high-resolution PDF page directly as a crisp, shareable PNG or JPEG image.
- Crisp high-DPI rasterization
- Single-click image download
- Transparent text layer rendering
- No watermarks
Night Mode & Sepia Reader
Read academic papers, books, and reports with eye-safe dark mode, warm sepia tones, and full text search.
- Hardware dark mode invert
- Warm sepia reading tone
- Full text search with matches
- Smooth scrolling
Scientific Unit & Engineering Tools Converter
Precision conversions of scientific metrics, SI metrics, thermodynamics, pressure systems, and engineering loads.
- SI & Imperial dimensions
- 9 physical conversion modules
- Adjustable decimal precision
- 100% offline local computation
Programmatic PDF Knowledge Hub
Technical insights on in-browser document security and PDF ISO standards
Client-Side PDF Editor (100% In-Browser & Zero Cloud Upload)
A client-side PDF editor executes all document rasterization, annotation coordinate mapping, and byte-level PDF stream modifications directly inside your web browser via WebAssembly and HTML5 Canvas. Zero data is transmitted to external servers, providing unmatched confidentiality.
Mobile & Web Camera Document Scanner to PDF (Instant Capture & Crop)
SnapPDF provides a high-resolution camera scanner that captures physical paper documents via your device camera or mobile camera fallback. The scanner applies real-time contrast optimization, black & white document thresholding, and perspective flattening before compiling pages into a multi-page PDF.
Private PDF Redaction Tool (Permanent Blackout Masking)
Unlike simple black highlight markers that can be removed by text selectors, SnapPDF permanently burns blackout rectangles into the underlying PDF stream on export, ensuring that Social Security numbers, bank accounts, and confidential names cannot be recovered.
PDF Page Rotator & Visual Organizer (Reorder, Rotate & Delete)
SnapPDF provides a high-resolution visual grid displaying every page of your PDF document. You can click to rotate individual pages 90° clockwise or counter-clockwise, drag to reorder pages, and delete unwanted pages in seconds.