About heic.site

What is heic.site?

heic.site is a free online tool that converts HEIC and HEIF images to widely compatible formats like JPG, PNG, WebP, and AVIF. Unlike most conversion services, heic.site processes every file entirely within your web browser. Your photos are never uploaded to a server, never stored in a database, and never seen by anyone but you. We built this tool because we believe image conversion should be fast, free, and private.

HEIC is the default photo format on iPhones and iPads running iOS 11 or later. While HEIC offers excellent compression, it is not universally supported across all platforms and applications. heic.site bridges that gap instantly, letting you convert photos for sharing on social media, uploading to websites, or using in applications that only accept JPEG or PNG.

How It Works

heic.site uses two conversion engines depending on your browser. On Safari (macOS and iOS), the browser can natively decode HEIC images because Apple includes built-in HEVC support. This native path is extremely fast — often 17 to 39 times faster than the alternative.

On Chrome, Firefox, Edge, and other browsers, heic.site uses WebAssembly (WASM) to decode HEIC files. The WASM decoder is compiled from the open-source libheif library, which implements the full HEIF standard. Decoding happens in a Web Worker so that the main thread stays responsive while your files are being processed.

After decoding, the raw pixel data is re-encoded into your chosen output format using the browser's native Canvas API (for JPG, PNG, and WebP) or the OffscreenCanvas API (for AVIF where supported). The entire pipeline — from file selection to download — happens on your device.

Privacy Policy

We do not upload, store, or access your files. All conversion happens locally in your browser using WebAssembly. No images are ever transmitted to our servers. Your photos remain entirely on your device from start to finish.

Data We Collect

Anonymous conversion metrics: format, file size, conversion time, browser family, and country. This data contains no personally identifiable information and is used solely to improve the service. We use these aggregate statistics to understand which formats are most popular, identify performance bottlenecks, and prioritize new features.

No Cookies

heic.site does not use cookies. We do not track you across websites. There are no third-party analytics scripts, no social media trackers, and no advertising pixels. Your browsing activity on heic.site is not shared with anyone.

Open Source Credits

heic.site is built on the shoulders of excellent open-source projects. We are grateful to the maintainers and contributors of:

Contact

Have questions, feedback, or found a bug? We would love to hear from you. Reach out via email at [email protected].