About heic.site

What is heic.site?

A free image converter that runs in your browser. Drop in a HEIC, AVIF, WebP, PNG, JPG, GIF, BMP, or TIFF file, pick your output format, and download the result. No account, no upload, no waiting for a server to process your stuff.

We built this because every other converter wants you to upload your photos to their servers. That felt wrong for personal images — vacation photos, family pictures, screenshots of sensitive documents. So we made the whole thing run locally. Your files literally never leave your device.

How it works under the hood

Most image formats (JPG, PNG, WebP, AVIF, GIF, BMP, TIFF) can be decoded natively by your browser. We hand the file to the browser's built-in image decoder, draw it onto a canvas, and re-encode it in your chosen format. Fast, simple, no external dependencies needed.

HEIC is the tricky one. Most browsers can't decode it natively (Apple's format, Apple's codec). On Safari, we get lucky — Apple baked HEVC support into the OS, so Safari can decode HEIC images using hardware acceleration. Crazy fast. On Chrome, Firefox, and everything else, we use a WebAssembly build of the open-source libheif library. It runs in a background thread (Web Worker) so the page doesn't freeze while it's crunching.

The output encoding (to JPG, PNG, WebP, or AVIF) uses the browser's Canvas API. Everything from file selection to download happens on your machine. Our servers just deliver the webpage.

Privacy

Your files don't get uploaded. Period. No images are transmitted, stored, cached, or logged on our servers. We can't see your photos even if we wanted to — the conversion code runs entirely in your browser's sandbox.

What we do collect

Basic, anonymous conversion stats: what format you converted from and to, file size, how long it took, which browser you used, and your approximate country. No names, no emails, no IP addresses logged. We use this to figure out which features people actually use and where the converter is slow.

Cookies and tracking

We don't use cookies. No Google Analytics, no Facebook pixel, no tracking scripts of any kind. No cookie banner because there's nothing to consent to.

Get in touch

Found a bug? Have a feature request? Just want to say hi? Email hello@heic.site.