About Initurn

Initurn is a collection of small, single-purpose file converters. Each one does exactly one job, lives at its own address, and runs entirely on your computer.

Why browser-only

Most free converters work the same way: you upload your file, a server converts it, and you download the result. That means handing a stranger a copy of whatever you were converting — a passport scan, a contract, a photo of your children — and trusting a line in a privacy policy about when it gets deleted.

Browsers stopped needing that arrangement years ago. They can decode and encode images natively, and WebAssembly covers most of what they cannot. Doing the work locally is faster for anything over a few megabytes, works without a connection once the page has loaded, and removes the question of trust entirely. There is no upload to trust, because there is no upload.

What that costs

Being honest about the trade-offs: local conversion is bounded by your own device. A 200-megapixel scan may exhaust memory on a phone. Some formats need a WebAssembly codec that has to download before the first conversion on that page — a few megabytes, once, then cached. And a handful of conversions genuinely cannot be done in a browser at all, which is why you will not find video, audio, or Office documents here. We would rather leave a gap than ship a tool that quietly uploads your file.

Why one page per conversion

A single "universal converter" page sounds tidier, but it is worse to use. Converting HEIC to JPG and converting PNG to SVG have almost nothing in common: different options matter, different things go wrong, and different questions come up. Giving each conversion its own page means the controls on screen are the ones that conversion actually needs, and the explanation underneath is about that conversion rather than about file formats in general.

How it is paid for

Advertising. There is no paid tier, no account, and no file size limit sold as an upgrade. Because nothing is stored server-side, the site costs very little to run, which is what makes free viable.

Missing a tool?

The list grows based on what people ask for. If a conversion you need is not here, tell us — if a browser can do it, it can probably be added.