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Supports: JPG, JPEG, JFIF
HEIF (High Efficiency Image File Format) stores a photo using the HEVC/H.265 codec, so a converted file is typically 40–50% smaller than the same JPEG at comparable quality. The catch: this is an Apple-ecosystem format. Re-encoding an already-lossy JPEG to HEIF gives you smaller files and headroom for 10‑bit color and transparency — it does not add back detail the JPEG already discarded.
.jpg, .jpeg, or .jfif files, or click "+ Add Files" to browse. Batch uploads convert with the same settings..heif file. No sign-up, no watermark.| Property | JPEG | HEIF (HEVC-coded) |
|---|---|---|
| Codec | JPEG (DCT, lossy) | HEVC / H.265 |
| File size at equal quality | Baseline | ~40–50% smaller |
| Color depth | 8 bits per channel | Up to 16 bits per channel |
| Transparency (alpha) | No | Yes |
| Multiple images per file | No | Yes (bursts, depth maps) |
| Opens in Chrome / Firefox / Edge | Yes | No (Safari 17+ only) |
| Best for | Universal sharing, the web | Apple-ecosystem storage savings |
HEIF wins on storage and color fidelity; JPEG wins on universal compatibility. If your photos live on an iPhone, iPad, or Mac, HEIF roughly halves the space they take. If you need to email, post, or open the image on Windows or Android without extra setup, JPEG (or JPEG to WebP for the web) is the safer target.
No. HEIF is more efficient than JPEG, but your source JPEG already threw away detail during its original lossy compression, and re-encoding cannot recover it. What you gain is a smaller file at similar perceived quality, plus the option to store 10‑bit color and transparency that the format supports — not extra sharpness.
Not without setup. Chrome, Firefox, and Edge can't render HEIF in-browser (only Safari 17 and later can). On Windows 10 and 11 you need the free "HEIF Image Extensions" plus the "HEVC Video Extensions" from the Microsoft Store to view it. If you need a file that opens everywhere, convert to JPEG instead — our HEIC to JPG tool handles the reverse trip.
HEIF carries its image data with HEVC (H.265), a modern video codec that uses far more advanced prediction and entropy coding than JPEG's decades-old DCT scheme. At equivalent visual quality that efficiency typically yields files about 40–50% smaller, which is why Apple switched the iPhone camera default to HEIF in iOS 11.
HEIF (ISO/IEC 23008-12) supports Exif and XMP metadata, so capture data such as timestamp, camera model, and orientation carry through the conversion. GPS and other fields present in the source JPEG are preserved where available.
In our testing, a 12‑megapixel JPEG straight off a phone converts in a couple of seconds, and the practical constraint is upload time on your connection rather than the image itself. Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically a few hours after conversion — no sign-up, no watermark, never shared or made public.