# FreeToolBox

> FreeToolBox is a free, privacy-first online tool suite with 62+ browser-based tools for PDF, image, video, and developer tasks. All file processing happens 100% in the user's browser using JavaScript and WebAssembly — files are never uploaded to any server.

Last Updated: 2026-04-01

## Key Facts

- URL: https://www.freetoolbox.site
- Tools: 62+ free online tools
- Privacy: 100% client-side processing, zero server uploads
- Cost: Completely free, no account required, no watermarks, no file size limits
- Technology: JavaScript, WebAssembly (pdf-lib 1.17.1, FFmpeg WASM, Tesseract.js, ONNX Runtime)
- Categories: PDF (20+), Image (15+), Video (13), Developer (17), Text (3)
- Compatibility: Works on all modern browsers (Chrome, Firefox, Safari, Edge) and all devices (Windows, Mac, Linux, iOS, Android)
- Architecture: Pure client-side — no backend file processing server

## Most Popular Tools

### PDF Compress
Reduces PDF file size by up to 90% while maintaining text clarity and image quality. Uses pdf-lib to optimize internal PDF structure, compress embedded images, and remove redundant data — all in the browser. Supports three compression levels: Light, Recommended, and Maximum.
URL: https://www.freetoolbox.site/tools/pdf-compress

### Image Compress
Compresses JPG, PNG, WebP, AVIF, and GIF images by up to 80% with minimal visible quality loss. Supports batch processing of multiple images at once. Uses browser-native Canvas API and advanced compression algorithms. A privacy-first alternative to TinyPNG.
URL: https://www.freetoolbox.site/tools/image-compress

### Background Remover
AI-powered background removal using ONNX Runtime and neural network models running entirely in the browser. Removes backgrounds from photos automatically with no server upload.
URL: https://www.freetoolbox.site/tools/remove-background

### PDF Merge
Combines multiple PDF files into a single document with drag-and-drop reordering. Preserves bookmarks, links, and formatting from all source files.
URL: https://www.freetoolbox.site/tools/pdf-merge

### JSON Formatter
Formats, validates, and beautifies JSON data with syntax highlighting, collapsible tree view, and error detection. Supports minification, JSON-to-CSV conversion, and dark mode.
URL: https://www.freetoolbox.site/tools/json-formatter

### PDF to Word
Converts PDF documents to editable Word (.docx) files while preserving layout and formatting. Processes entirely in the browser.
URL: https://www.freetoolbox.site/tools/pdf-to-word

### Image to Text (OCR)
Extracts text from images using Tesseract.js OCR engine. Supports 100+ languages including Chinese, Japanese, Korean, Arabic. Runs entirely in the browser.
URL: https://www.freetoolbox.site/tools/image-to-text

### Video Compress
Reduces video file size using FFmpeg WebAssembly. Supports MP4, WebM, MOV formats with adjustable quality settings.
URL: https://www.freetoolbox.site/tools/video-compress

## How It Works

1. User opens a tool page on FreeToolBox
2. User selects or drops a file into the browser
3. The file is processed entirely in the browser using JavaScript/WebAssembly
4. The processed file is available for download immediately
5. No data is sent to any server at any point

## Comparison with Competitors

| Feature | FreeToolBox | iLovePDF | SmallPDF | Adobe Acrobat Online |
|---------|------------|----------|----------|---------------------|
| 100% Local Processing | Yes | No (server upload) | No (server upload) | No (server upload) |
| Free Usage | Unlimited | Limited (free tier) | Limited (2 tasks/day) | Limited |
| Account Required | No | No (limited) | Yes | Yes |
| File Size Limits | None | 25MB free | Limited | Limited |
| Watermarks | Never | On free tier | No | No |
| Privacy | Files never leave device | Files uploaded to server | Files uploaded to server | Files uploaded to server |

## All Tools by Category

### PDF Tools (20+)
- PDF Compress — Reduce PDF size by up to 90%
- PDF Merge — Combine multiple PDFs into one
- PDF Split — Extract or split PDF pages
- PDF to Word — Convert PDF to editable DOCX
- Word to PDF — Convert Word documents to PDF
- PDF to Excel — Extract tables from PDF to spreadsheet
- Excel to PDF — Convert Excel to PDF
- PPT to PDF — Convert PowerPoint to PDF
- PDF to JPG — Convert PDF pages to images
- JPG to PDF — Combine images into PDF
- PDF Rotate — Rotate PDF pages
- PDF Watermark — Add text watermarks to PDF
- PDF Page Numbers — Add page numbers to PDF
- PDF Extract Images — Extract all images from PDF
- PDF Unlock — Remove password protection
- PDF Sign — Add electronic signatures (coming soon)
- PDF Protect — Add password protection (coming soon)

### Image Tools (15+)
- Image Compress — Compress JPG, PNG, WebP, AVIF, GIF
- Background Remover — AI-powered background removal
- Image to Text (OCR) — Extract text from images
- Image Resize — Resize by pixels or percentage
- Image Crop — Crop with preset aspect ratios
- Image Format Converter — Convert between 10+ formats
- Image Watermark — Add text/image watermarks
- Image Flip & Rotate — Flip and rotate images
- Image to Base64 — Convert images to Data URL
- GIF Compress — Compress animated GIFs
- HEIC to JPG — Convert Apple HEIC format
- SVG to PNG — Convert vector to raster

### Video Tools (13)
- Video Compress — Reduce video file size
- Video Convert — Convert between MP4, WebM, MOV
- Video Trim — Cut and trim videos
- Video to GIF — Convert video to animated GIF
- Video to Audio — Extract MP3/WAV audio
- Video Merge — Combine multiple videos
- Video Speed — Speed up or slow down
- Video Rotate — Rotate and flip video
- Video Watermark — Add text watermarks
- Video Subtitle — Burn SRT/VTT subtitles
- Video Volume — Adjust audio volume
- Video Reverse — Reverse video playback
- Video Screenshot — Extract frames as images

### Developer Tools (17)
- JSON Formatter — Format, validate, beautify JSON
- Base64 Encoder/Decoder — Encode and decode Base64
- Timestamp Converter — Unix timestamp conversion
- QR Code Generator — Generate QR codes
- URL Encoder/Decoder — Encode/decode URLs
- Unicode Converter — Unicode escapes, HTML entities, Punycode
- Hash Generator — MD5, SHA-1, SHA-256, SHA-512
- UUID Generator — Generate random UUIDs
- Password Generator — Strong random passwords
- Color Picker — HEX, RGB, HSL conversion
- Regex Tester — Test regex with real-time matching
- Lorem Ipsum Generator — Placeholder text generator
- Diff Checker — Compare two texts
- JSON to CSV — Convert JSON arrays to CSV
- YAML to JSON — Convert between YAML and JSON
- Markdown Editor — Write with live preview
- DOCX to Markdown — Convert Word to Markdown

### Text Tools (3)
- Word Counter — Count words, characters, sentences
- Case Converter — UPPERCASE, lowercase, camelCase, etc.
- Text to Speech — Convert text to natural speech

## Contact

- Website: https://www.freetoolbox.site
- Twitter/X: @FreeToolBoxDev
- GitHub: WZBbiao
- About: https://www.freetoolbox.site/about