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A converter that stays on your device.

toany.io turns one kind of file into another. What makes it different is where the work happens: in your own browser, not on someone else's computer.

How it works

Most online converters upload your file to a server, convert it there and send the result back. toany ships the converter to you instead. When you add a file, the page loads a small conversion program for that kind of file and runs it in your browser tab. The file is read from your disk, converted in your device’s memory and handed back to you as a download.

  • It detects the type for you. toany looks at the first bytes of the file rather than trusting its name, so a HEIC photo renamed to .jpg is still recognised as HEIC.
  • Converters load on demand. Each format’s code is fetched the first time you need it. A photo conversion never downloads the video converter.
  • Results stay in the tab. Converted files exist only in your browser’s memory until you save them. Closing the tab discards them.

What that means for privacy

For a browser conversion there is nothing to trust us with: the file’s contents, its name and its size are never sent to toany. You can watch the Network panel of your browser’s developer tools while converting to check.

A small number of conversions, mainly office documents, cannot be done reliably in a browser. Those run on our conversion server. They are clearly labelled, they ask for your consent before anything is uploaded, and the file is deleted after the conversion. The privacy policy lists exactly what happens.

What it can and cannot do

toany currently reads 177 formats and offers 1123 conversions between them; the converters page lists every one. Because your device does the work, a few things follow:

  • Speed depends on your device. Photos and documents take moments; long videos can take minutes, especially on a phone.
  • Very large files are limited by your device’s memory. A computer copes with more than a phone.
  • You need a current browser: recent versions of Chrome, Edge, Safari or Firefox.
  • We only list conversions the tool actually performs. If a pair has no page, toany does not do it.

Built on open source

The conversion code is built on open-source libraries, including FFmpeg, libheif, PDF.js, 7-Zip and others. Their licences and source links are on the open-source licences page.

Who makes it

toany is made and operated by TheRu Studio, a product studio based in Sydney, Australia. The studio designs and builds its own web products; toany is one of them, and it is run by the same people who build it.

Questions, bug reports and files that would not convert are welcome at [email protected]. Please do not attach anything confidential.