HEIC to WebP Converter

iPhones save photos as HEIC, which most websites, content management systems and Android or Windows apps cannot take. WebP is supported by every current browser and is far smaller than JPG at the same quality, so it is the natural web format for phone photos. This converter decodes each HEIC photo in your browser — natively in Safari, with a built-in HEIF decoder elsewhere — and saves it as WebP at the quality and size you choose.

How to use this tool

1. Choose one or more .heic or .heif photos.
2. Set the quality (75–85 suits photos) and optionally a max size such as 2048 px.
3. Tick "every image" to save all pictures of a burst or multi-image HEIF.
4. Download the WebP files, or all of them as a ZIP.

Formula

Size change = (WebP bytes ÷ HEIC bytes − 1) × 100%. Max size: scale = max size ÷ longer side (never enlarges).

HEIC (HEVC) and lossy WebP (VP8) are both lossy, so the photo is re-encoded once; HEIC is usually the more efficient of the two, so at high quality the WebP can be larger than the HEIC, while a max size keeps it small. Photos are turned upright as on the phone. Metadata such as EXIF and GPS location is not copied. Each photo is decoded by a fresh HEIF decoder with a time limit, so a file that fails or stalls is reported instead of freezing the page. Transparency in a HEIF (iPhone photos have none) is kept, because WebP has an alpha channel.

Example

A 4032 × 3024 iPhone photo with a max size of 2048 px: scale = 2048 ÷ 4032 = 0.508, so the WebP is 2048 × 1536 px — about a quarter of the pixels, which keeps the file small enough for most upload forms.