Free tools for converting HEIC and HEIF photos to formats that actually open everywhere.
What this is
HEICcon is a collection of free browser-based converters for HEIC images — the format iPhones have used by default since iOS 11. The main tool converts HEIC to JPG. There are also dedicated tools for PNG, WebP, AVIF, GIF, BMP, TIFF, and more.
Everything runs in your browser. Your photos don't get sent to a server. There's no account to create, nothing to install.
Why it exists
Apple picked HEIC because it gets roughly half the file size of JPEG at equivalent quality. Sensible decision for storage. The problem is almost nothing outside Apple's ecosystem opens HEIC natively — not Windows, not most web apps, not email clients, not social platforms. Windows actually charges for the codec.
Most converter sites that handle this require you to upload your photos to their servers. That means someone else has your camera roll, even temporarily. HEICcon doesn't work that way. There is no upload. The conversion happens in your tab.
How it works
HEIC decoding uses libheif compiled to WebAssembly — the same library behind GIMP and ImageMagick. The decoded image goes through your browser's Canvas API, gets encoded to the target format, and downloads to your machine. All of that happens inside Web Workers so the page stays responsive during batch conversions.
You can convert up to 50 files at once. There's a quality slider, an EXIF strip toggle, and a resize option. Defaults work for most people — the settings are there for when they don't.
Honest limitations
HEIC files are encoded in 10-bit color. Canvas works in 8-bit. The conversion reduces bit depth and maps wide-gamut colors to sRGB. For most photos this is invisible, but if you're doing professional color work, use Lightroom or darktable instead.
EXIF metadata — GPS, camera settings, timestamps — is stripped during conversion. That's a side effect of the Canvas pipeline, not a removable option.
Importing a file by URL goes through a server proxy so we can fetch it cross-origin. The file is never stored — it streams to your browser and that's it. Google Drive imports use OAuth in your browser; we never see the token.
Who's behind this
HEICcon is built and maintained by Vaibhav Rajput under AppsYogi. It's part of a network of format-specific converter sites — each focused on one source format rather than trying to do everything from one generic URL.
If you want to get in touch, the contact page has an email. Everything gets read.
Open about what we track
We use Google Analytics to understand which tools get traffic and where visitors come from. Your photos and conversion activity are never sent anywhere — all processing is local in your browser. Full details on the privacy page.