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Dataset 20261011-0550-f160c57 · measured 2026-10-11 05:50 UTC
-webkit-border-radius
≈below the visible threshold8 of 8 examples match Chromecompat
Differs from Chrome only inside the measured anti-aliasing band (maximum channel distance 3 of 255). Curves, rotation and gradients land here.
What the specification says
- Syntax
- <length-percentage [0,∞]>{1,4} [ / <length-percentage [0,∞]>{1,4} ]?
The measurements
8 examples, 8 of them matching Chrome. Each is one declaration on a small page, drawn by Chrome and by our engine. Drag the handle to wipe between them.
-webkit-border-radius:50%≈below the visible threshold
Our renderChrome129 pixels differ from Chrome, the largest by 3 of 255 on one channel.
- Differing pixels
- 129
- Max channel delta
- 3
-webkit-border-radius:20px / 50%≈below the visible threshold
Our renderChrome49 pixels differ from Chrome, the largest by 3 of 255 on one channel.
- Differing pixels
- 49
- Max channel delta
- 3
-webkit-border-radius:20px≈below the visible threshold
Our renderChrome9 pixels differ from Chrome, the largest by 3 of 255 on one channel.
- Differing pixels
- 9
- Max channel delta
- 3
-webkit-border-radius:20px / 20px≈below the visible thresholdOur renderChrome9 pixels differ from Chrome, the largest by 3 of 255 on one channel.
- Differing pixels
- 9
- Max channel delta
- 3
-webkit-border-radius:40%≈below the visible threshold
Our renderChrome143 pixels differ from Chrome, the largest by 3 of 255 on one channel.
- Differing pixels
- 143
- Max channel delta
- 3
-webkit-border-radius:20px / 40%≈below the visible threshold
Our renderChrome33 pixels differ from Chrome, the largest by 3 of 255 on one channel.
- Differing pixels
- 33
- Max channel delta
- 3
-webkit-border-radius:calc(40% + 20px)≈below the visible threshold
Our renderChrome162 pixels differ from Chrome, the largest by 3 of 255 on one channel.
- Differing pixels
- 162
- Max channel delta
- 3
-webkit-border-radius:20px / calc(40% + 20px)≈below the visible threshold
Our renderChrome49 pixels differ from Chrome, the largest by 3 of 255 on one channel.
- Differing pixels
- 49
- Max channel delta
- 3
Which values were measured
“Supported” on one example means “supported at the value we tried”. The property’s declared grammar has 4 branches; 4 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 | ≈below the visible threshold |
| 50% | ≈below the visible threshold |
| 20px / 20px | ≈below the visible threshold |
| 20px / 50% | ≈below the visible threshold |
Measured against Chrome 148.0.7778.96 on 2026-10-11, with up to 40 candidate values tried per property. All properties · How the measurement works