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Dataset 20261001-0535-e08c90a · measured 2026-10-01 05:35 UTC
-webkit-mask-box-image-width
–not implemented0 of 8 examples match Chromecompat
The engine's CSS parser does not know this property name, so the declaration is dropped where it is read.
The measurements
8 examples, 0 of them matching Chrome, the rest first. Each is one declaration on a small page, drawn by Chrome and by our engine. Drag the handle to wipe between them.
-webkit-mask-box-image-width:50%–not implemented
Our renderChrome54,923 pixels differ from Chrome, the largest by 204 of 255 on one channel.
- Differing pixels
- 54,923
- Max channel delta
- 204
-webkit-mask-box-image-width:20px–not implemented
Our renderChrome20,099 pixels differ from Chrome, the largest by 202 of 255 on one channel.
- Differing pixels
- 20,099
- Max channel delta
- 202
-webkit-mask-box-image-width:2–not implemented
Our renderChrome36,145 pixels differ from Chrome, the largest by 203 of 255 on one channel.
- Differing pixels
- 36,145
- Max channel delta
- 203
-webkit-mask-box-image-width:40%–not implemented
Our renderChrome52,703 pixels differ from Chrome, the largest by 204 of 255 on one channel.
- Differing pixels
- 52,703
- Max channel delta
- 204
-webkit-mask-box-image-width:4px–not implemented
Our renderChrome8,876 pixels differ from Chrome, the largest by 195 of 255 on one channel.
- Differing pixels
- 8,876
- Max channel delta
- 195
-webkit-mask-box-image-width:0.4–not implemented
Our renderChrome12,548 pixels differ from Chrome, the largest by 200 of 255 on one channel.
- Differing pixels
- 12,548
- Max channel delta
- 200
-webkit-mask-box-image-width:calc(40% + 20px)–not implemented
Our renderChrome54,843 pixels differ from Chrome, the largest by 204 of 255 on one channel.
- Differing pixels
- 54,843
- Max channel delta
- 204
-webkit-mask-box-image-width:calc(20px + 4px)–not implemented
Our renderChrome22,715 pixels differ from Chrome, the largest by 202 of 255 on one channel.
- Differing pixels
- 22,715
- Max channel delta
- 202
Which values were measured
“Supported” on one example means “supported at the value we tried”. The property’s declared grammar has 4 branches; 3 of them carry a measurement. The publishing ceiling is 12 examples per property — a branch past it is left out by our choice, not by accident.
| Value | Measured |
|---|---|
| 20px | –not implemented |
| 50% | –not implemented |
| 2 | –not implemented |
| auto | not measured |
Measured against Chrome 148.0.7778.96 on 2026-10-01, with up to 40 candidate values tried per property. All properties · How the measurement works