About – MultiTool

Our Mission

MultiTool was built with one simple goal: provide powerful, professional-grade tools that work entirely in your browser without requiring you to upload your sensitive files to third-party servers. Privacy is not an afterthought — it's the foundation of everything we build.

How It Works

Every tool on MultiTool uses modern Web APIs, HTML5 Canvas, and JavaScript libraries to process your data locally. When you merge PDFs, convert images, or read EXIF metadata, all computation happens on your device — not on our servers. We don't even have servers for file processing.

Our Tools

PDF Merge – Combine multiple PDFs using PDF-LIB (client-side)
PDF to Images – Render PDF pages using PDF.js and Canvas
Image Grayscale / Sepia – Pixel manipulation via Canvas API
Image Rotate & Flip – Canvas transforms for rotation and mirroring
Favicon Generator – Resize images to all favicon dimensions
EXIF Metadata Viewer – Client-side binary parsing with exifr.js
Image Watermark Tool – Canvas compositing for text and image watermarks
Background Changer – PNG background color replacement via Canvas
HTML to Image – html2canvas for screenshotting HTML code
Pixel to REM Converter – Developer utility for CSS unit conversion

Technologies Used

MultiTool is built with plain HTML, CSS, and JavaScript. We use the following open-source libraries loaded from CDNs:

PDF-LIB – Client-side PDF creation and manipulation
PDF.js – Mozilla's PDF rendering engine
exifr.js – Fast, universal EXIF reader
html2canvas – HTML-to-canvas screenshotter
Font Awesome – Icon library
Google Fonts – Inter typeface

Privacy First

We believe your files are your business. That's why MultiTool processes everything locally. We collect no personal data, store no files, and have no user accounts. Read our Privacy Policy for complete details.

Open & Free

All tools are completely free to use with no limits, no watermarks on outputs, and no premium tiers. We believe productivity tools should be accessible to everyone.