What this site is
Conversion Wizard is a free online converter for HEIC and HEIF images. Apple devices save photos in HEIC by default because it stores high-quality images in about half the space of a JPEG. The trade-off is compatibility: plenty of apps, websites, and Windows programs still can’t open a .heic file. This tool bridges that gap by turning those photos into PNG, a format that opens everywhere and preserves every pixel.
Why we built it
Most “convert HEIC online” tools work by uploading your photos to a server, running the conversion there, and sending the result back. That’s fine for a meme, but it’s the wrong model for personal photos — the images leave your device and you have to trust a stranger’s server with them. We wanted a converter that does the job without that trade-off, so we built one that runs entirely inside your browser.
How it works
When you add a file, your browser decodes the HEIC image using a WebAssembly build of libheif — the same open-source library behind many native HEIC viewers — and re-encodes it as a PNG using the browser’s own canvas. All of that happens locally on your device. Your images are never intentionally transmitted to or stored on a server. You can read the specifics on our privacy page.
Because the work is local, the tool is fast (no upload wait), works offline once loaded, and handles batches — convert many photos at once and download them individually or as a single ZIP.
What it does well — and its limits
- Converts
.heicand.heifimages to lossless PNG. - Runs on Windows, macOS, Android, iPhone, and iPad in a modern browser.
- Keeps transparency and lets you optionally reduce the output file size.
- Some unusual HEIC variants (certain depth maps or image sequences) may not be decodable in the browser; when that happens you’ll see a clear error, not a silent failure.
Who makes it
Conversion Wizard is built and maintained by Syntrx Studios, LLC. We build small, focused web tools that respect the people who use them. If you have a question, a bug report, or a feature request, we’d genuinely like to hear it — reach us on the contact page.
Learn more
New to the format? Start with HEIC vs PNG or our guides, which cover opening HEIC on Windows, fixing files that won’t open, and turning off HEIC capture on an iPhone. Or just head to the converter and try it.
