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Supports: WEBP
WebP is Google's web-first image format optimized for browser delivery, while HEIC (High Efficiency Image Container) is Apple's HEVC-backed format that ships native on every iPhone since iOS 11 (2017) and every Mac since macOS High Sierra. HEIC typically produces files 10-25% smaller than WebP at the same visual quality, and unlike WebP it slots cleanly into Apple Photos, iCloud Photo Library, and AirDrop.
| Property | WebP | HEIC |
|---|---|---|
| Underlying codec | VP8 / VP8L | HEVC (H.265) |
| Released | 2010 (Google) | 2015 (MPEG/Apple) |
| Typical size vs JPEG | ~30% smaller | ~50% smaller |
| Color depth | 8-bit | Up to 16-bit |
| Wide color (P3) | Limited support | Full support |
| Animation | Yes (WebP animated) | Yes (HEIC sequences / Live Photos) |
| Native iOS/macOS | iOS 14+ view only | iOS 11+ full read/write |
| Native Android | Yes (4.0+) | Android 9+ |
| Native Windows | Edge/Chrome | Win 10/11 + HEIF extension |
| Browser display | Universal | Safari only |
| Preset | Approx Quality | Use Case | Size vs Source WebP |
|---|---|---|---|
| Highest | ~95% | Print, archival masters, Photos library originals | Often slightly larger |
| Very High | ~90% | Pro photography, portfolio | ~10-20% smaller |
| High (default) | ~80% | General iPhone camera roll, social sharing | ~30-40% smaller |
| Medium | ~70% | Messaging, web thumbnails on Apple devices | ~50% smaller |
| Low | ~50% | Bulk archive, low-priority screenshots | ~65% smaller |
| Lossless | 100% (no loss) | Graphics, screenshots, exact-copy needs | Variable, often larger |
Yes, but with caveats. Windows 10/11 needs the free HEIF Image Extensions from the Microsoft Store (and the paid HEVC Video Extensions, $0.99, for full decode). Android 9+ supports HEIC natively in Photos and Files. Older Android and Windows 7/8 systems need a third-party viewer like CopyTrans HEIC. If broad compatibility matters more than file size, convert to JPG instead.
HEIC uses HEVC (H.265) intra-frame encoding, which is roughly a generation newer than WebP's VP8 codec. HEVC supports larger coding tree units (up to 64×64 vs WebP's 16×16), more intra-prediction modes (35 total: 33 directional plus DC and planar, vs 10 in VP8), and better entropy coding (CABAC). For the same visual quality, HEIC files typically come out 10-25% smaller than WebP.
XConvert converts the first frame by default. HEIC does support multi-image sequences (that's how Live Photos work), but most viewers display only the cover image. If you have an animated WebP, convert to GIF or MP4 for true animation playback on non-Apple devices.
If your source WebP was already heavily compressed (say 60% quality), converting to HEIC at High preset will preserve that quality without further visible loss because HEVC re-encoding at a similar quality level is more efficient than VP8. Pick Lossless if you want a guaranteed bit-perfect re-encode of the visible pixels.
HEIC supports alpha channels via the HEIF container's auxiliary image specification, and XConvert preserves transparency during conversion. Any transparent regions in your WebP will render correctly in Apple Photos, Preview, and Quick Look. If you need the absolute best transparency support across all platforms, use WebP to PNG.
Yes. Files are uploaded over an encrypted connection and processed on our servers, so the practical limit is upload size and connection speed. Batches of 500-1,000 WebPs at typical web sizes (under 500KB each) work without issue. There's no file count cap, no sign-up, and no watermark.
EXIF (camera model, capture date, GPS, color profile) is preserved. WebP rarely carries the rich EXIF that camera-originated HEIC has, but whatever metadata exists in the source WebP — including ICC color profiles and XMP tags — carries through to the HEIC output.
If the WebPs were saved from a website or social platform, they're likely already lossy — you can delete them after confirming the HEIC opens correctly. If they came from a camera or screenshot tool that saved lossless WebP, keep the originals: HEIC at default quality is lossy, and you can't recover the original detail later.