About onlinefileconverter
We're building the file converter we always wished existed — fast, private, and free.
Our Mission
For years, converting a file meant uploading it to a stranger's server, waiting in a queue, and trusting that they'd actually delete it afterward. We thought that was strange. Modern browsers are powerful enough to convert images, documents, audio, and video without sending a single byte over the network — so we built a tool that does exactly that.
onlinefileconverter is our answer to bloated, ad-ridden, privacy-violating conversion websites. Every conversion runs locally in your browser using JavaScript and WebAssembly. Your files stay on your device. Always.
What We Stand For
Privacy First
Your files are processed entirely in your browser. We never see them, store them, or transmit them to any server.
Speed Matters
No upload queues, no waiting rooms. Conversions happen instantly using your device's own processing power.
Free for Everyone
No paywalls, no hidden limits, no premium tiers. File conversion should be accessible to everyone, everywhere.
Built on Open Web
Powered by modern browser APIs, WebAssembly, and Canvas. No proprietary plugins or downloads required.
How Browser-Based Conversion Works
When you drop a file into onlinefileconverter, your browser reads it into memory using standard Web APIs like FileReader and Canvas. The conversion runs on your device — using your CPU, your RAM, your power. The output file is generated locally and offered as a download. At no point does the file (or any data derived from it) travel across the internet.
This means conversions are limited only by your own device's capabilities — and they're inherently private. Even if our servers were compromised tomorrow, there would be nothing for an attacker to steal, because we never had your files in the first place.