HEIC to WEBP, explained
Prepare a still WEBP copy of an HEIC photo for a website that accepts WEBP. Check HEIC decoding first, then compare the chosen WEBP quality against the original rather than assuming a fixed size saving.
Try one HEIC photo and wait for a readable preview.
Select WEBP quality and convert a representative photo.
Inspect the download in your publishing workflow before processing a batch.
From a phone library to a website
Use this route when your content system accepts WEBP but not HEIC. The result is a single raster image. It does not transfer an Apple photo-library record, a Live Photo video component or editing history.
Two separate browser capabilities
The device must decode HEIC and encode WEBP. Success with PNG does not prove either capability. FormatPlease checks the returned output type instead of saving a differently encoded file under a WEBP extension.
Choose quality for the destination
Start at quality 90 and inspect detail at the intended display size. Lower values can reduce bytes while changing texture. The tool does not provide dedicated lossless WEBP encoding, and quality 100 is not an identical-pixel guarantee.
Dimensions and page weight
Conversion retains decoded dimensions at Original size. Use Advanced Settings to resize during conversion, but retain the HEIC for later exports. Measure actual output bytes; conversion alone promises no saving.
Limits for high-resolution photos
The 24-megapixel limit applies to decoded photos. Native HEIC support cannot override that limit. Export a smaller copy using a capable local photo application if needed; color profiles and original metadata are not carried over.