Your Privacy Matters
Security &
Privacy
Your files never leave your device. All processing happens locally in your browser.
100% Client-Side Processing
How It Works
- 1You select a file from your device
- 2The file is read into your browser's memory using JavaScript FileReader API
- 3All conversion/processing happens in your browser using WebAssembly and JavaScript libraries
- 4The converted file is generated locally and downloaded directly to your device
- 5At no point does your file travel over the internet to our servers
Verify It Yourself
DevTools
$Open your browser's Developer Tools (F12)
$Go to the "Network" tab and convert a file
$What you'll see: library files (js, wasm), fonts, and analytics - these are downloaded once
$You won't see any POST/PUT request carrying your file content - your file stays on your device
Network tab = Empty (No uploads!)
Technologies We Use
Powered by modern browser APIs and WebAssembly
Image Processing
Canvas API, WebGL - Native browser APIs for image manipulation
PDF Processing
PDF.js (Mozilla), pdf-lib - Client-side PDF rendering and editing
OCR (Text Recognition)
Tesseract.js - WebAssembly-based OCR running entirely in browser
Background Removal
@imgly/background-removal - AI model running locally via WebAssembly
Video Processing
FFmpeg.wasm - Full FFmpeg compiled to WebAssembly
Audio Processing
Web Audio API - Native browser audio processing
Security Headers
Industry-standard HTTP security headers protect your browsing
| Header | Purpose | Status |
|---|---|---|
Strict-Transport-Security | Forces HTTPS connections | Enabled |
Content-Security-Policy | Prevents XSS attacks | Enabled |
X-Frame-Options | Prevents clickjacking | Enabled |
X-Content-Type-Options | Prevents MIME sniffing | Enabled |
Referrer-Policy | Controls referrer info | Enabled |
Permissions-Policy | Restricts browser features | Enabled |
What We Don't Do
We don't upload your files to any server
We don't store your files anywhere
We don't analyze or read your file contents
We don't require account registration
We don't track which files you convert
Found a Security Issue?
We take security seriously. Please report any vulnerabilities responsibly.
security@convertsafely.com