About ChangeMyFile

ChangeMyFile started as a side project in 2021 while learning React.js. The goal was simple: build something useful. File conversion turned out to be exactly that — something everyone needs and most existing tools manage to get wrong.

Why We Built This

Every other file converter had the same problems: arbitrary file size limits, mandatory account creation, watermarks on output, or conversion queues that made you wait. Tools that should take five seconds were taking five minutes — and still asking you to sign up first.

So we built ChangeMyFile. No login. No file size theatrics. No upsell to a paid plan. Just upload, convert, download. It launched on 3 April 2021 and has been free ever since.

How It Works

The conversion engine is built on FFmpeg — the same open-source library that powers video processing across the web — combined with a Python backend that handles format detection, processing, and cleanup. Files are containerised with Docker so each conversion runs in an isolated environment and is automatically deleted after processing.

The frontend is built with Next.js and statically generated — meaning pages load fast because there is no server rendering delay. When you upload a file, it goes directly to the conversion backend, gets processed, and a download link comes back. No intermediate storage. No third-party services touching your files.

What We Support

ChangeMyFile covers audio, video, image, and document conversions — over 900 format combinations. Common ones like MP4 to MP3, HEIC to JPG, and PDF to DOCX are handled in seconds. Less common ones like MTS, M4R, or OGV are supported too, because the people who need those formats need them just as badly.

Format support is informed by what users actually need, not what's easy to implement. If a conversion is missing, it's on the list.

Privacy

Files are deleted automatically after conversion. We don't store them, analyse them, or pass them to third parties. The conversion happens server-side in an isolated Docker container and the output is served directly to you. We don't require an account because we don't need to track anything.