About HEIConverter
HEIConverter is a free, privacy-first tool that converts HEIC and HEIF images to JPG, PNG, WebP, and PDF — entirely in your browser. No uploads, no accounts, no limits.
What We Do
Apple devices capture photos in HEIC format by default. While HEIC offers excellent compression, many apps, websites, and devices still don't support it. HEIConverter bridges that gap — giving you instant, high-quality conversions to universally compatible formats.
- Convert HEIC to JPG, PNG, WebP, or PDF
- View HEIC files directly in your browser
- Batch convert up to 200 files at once
- Inspect and manage EXIF metadata
- Adjustable quality for lossy formats
How It Works
Unlike traditional converters that upload your photos to remote servers, HEIConverter processes everything locally using modern web technologies:
- WebAssembly (WASM) — The libheif library runs compiled native code in your browser for fast HEIC decoding
- Web Workers — Heavy processing runs on background threads (up to 4 in parallel) so the interface stays responsive
- Canvas API — Your browser's native rendering engine handles format encoding with quality control
- Service Worker — All conversion libraries are cached locally so the tool works offline after the first visit
No server ever touches your files. The entire conversion pipeline — decoding, encoding, metadata extraction, ZIP packaging — happens on your device.
No sign-up required. Your files stay on your device.