Chrome 17 / Edge 18 added WebP support#28653
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ddbeck
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Dec 12, 2025
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| { | ||
| "version_added": "17", | ||
| "version_removed": "23", | ||
| "partial_implementation": true, | ||
| "notes": "Lossless compression and alpha transparency are not supported." | ||
| } |
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This note and partial duplicates the alpha and lossless subfeatures. We don't generally bubble up data like this, so I unwound this.
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| "edge": { | ||
| "version_added": "18" | ||
| }, |
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Edge shipped WebP in v18, according to caniuse (and some contemporaneous reports, like this one). It'd be nice to generate a status in web-features that aligns. This also eliminates the ≤.
caugner
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Dec 12, 2025
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Summary
Reconcile WebP data with caniuse and subfeatures
Test results and supporting details
In web-platform-dx/web-features#3624, I started to use the WebP (and some other format) data. I ran into a couple discrepancies with web-features, caniuse, and BCD's own conventions. I'll self review to call out the specifics.
Related issues
mediatypesdirectory withimagetype data #27168mediatypesdata in existing image format features web-platform-dx/web-features#3624