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Dataset 20260827-2142-2f1b575 · measured 2026-08-27 21:42 UTC
object-position
✓pixel-exactcss-images-3
Our rendering of the example is identical to Chrome's, pixel for pixel — no further apart than the example's own noise floor.
What the specification says
- Initial value
- 50% 50%
- Applies to
- replaced elements
- Inherited
- no
- Percentages
- refer to width and height of element itself
- Computed value
- as for background-position
- Syntax
- <position>
The measurements
Each example is one declaration on a small page, drawn by Chrome and by our engine. Drag the handle to wipe between them.
object-position:right 20px top 20px✓pixel-exact
Our renderChrome3,274 pixels differ from Chrome, the largest by 87 of 255 on one channel.
- Differing pixels
- 3,274
- Max channel delta
- 87
object-position:left 20px top 20px✓pixel-exact
Our renderChrome3,274 pixels differ from Chrome, the largest by 87 of 255 on one channel.
- Differing pixels
- 3,274
- Max channel delta
- 87
object-position:left 20px✓pixel-exact
Our renderChrome3,434 pixels differ from Chrome, the largest by 87 of 255 on one channel.
- Differing pixels
- 3,434
- Max channel delta
- 87
object-position:20px✓pixel-exact
Our renderChrome3,574 pixels differ from Chrome, the largest by 87 of 255 on one channel.
- Differing pixels
- 3,574
- Max channel delta
- 87
object-position:20px top✓pixel-exact
Our renderChrome3,574 pixels differ from Chrome, the largest by 87 of 255 on one channel.
- Differing pixels
- 3,574
- Max channel delta
- 87
Which values were measured
“Supported” on one example means “supported at the value we tried”. The property’s declared grammar has 53 branches; 5 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 |
|---|---|
| left | not measured |
| center | not measured |
| right | not measured |
| top | not measured |
| bottom | not measured |
| x-start | not measured |
| x-end | not measured |
| y-start | not measured |
| y-end | not measured |
| block-start | not measured |
| block-end | not measured |
| inline-start | not measured |
| inline-end | not measured |
| 20px | ✓pixel-exact |
| 50% | not measured |
| left top | not measured |
| center top | not measured |
| right top | not measured |
| x-start top | not measured |
| x-end top | not measured |
| left center | not measured |
| left bottom | not measured |
| left y-start | not measured |
| left y-end | not measured |
| 20px top | ✓pixel-exact |
| 50% top | not measured |
| left 20px | ✓pixel-exact |
| left 50% | not measured |
| block-start inline-start | not measured |
| center inline-start | not measured |
| block-end inline-start | not measured |
| block-start center | not measured |
| block-start inline-end | not measured |
| start start | not measured |
| center center | not measured |
| end end | not measured |
| left 20px top 20px | ✓pixel-exact |
| right 20px top 20px | ✓pixel-exact |
| x-start 20px top 20px | not measured |
| x-end 20px top 20px | not measured |
| left 50% top 20px | not measured |
| left 20px bottom 20px | not measured |
| left 20px y-start 20px | not measured |
| left 20px y-end 20px | not measured |
| left 20px top 50% | not measured |
| block-start 20px inline-start 20px | not measured |
| block-end 20px inline-start 20px | not measured |
| block-start 50% inline-start 20px | not measured |
| block-start 20px inline-end 20px | not measured |
| block-start 20px inline-start 50% | not measured |
| start 20px start 20px | not measured |
| end 20px end 20px | not measured |
| start 50% start 50% | not measured |
Measured against Chrome 148.0.7778.96 on 2026-08-27, with up to 40 candidate values tried per property. All properties · How the measurement works