vision-coordinates changedbuild-with-claude/vision-coordinates
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4444First check which resolution tier your model is on (see [Resolution and token cost](https://platform.claude.com/docs/en/build-with-claude/vision#evaluate-image-size)) and pass the matching edge and token limits. The following reference implementation computes the exact size Claude resizes an image to:
4545
46<CodeGroup>
47 ```bash cURL
48 # This reference implementation is local math that makes no API request, so
49 # there's nothing to show for cURL. See the SDK tabs.
50 ```
46<CodeGroup exclude="shell">
47 <CodeGroupItem language="cURL">
48 Compute this size in code.
49 </CodeGroupItem>
5150
52 ```bash CLI
53 # This reference implementation is local math that makes no API request, so
54 # there's nothing to show for the CLI. See the SDK tabs.
55 ```
51 <CodeGroupItem language="CLI">
52 Compute this size in code.
53 </CodeGroupItem>
5654
5755 ```python Python
5856 import math
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484482
485483Screenshots and zoom images that you return to the [computer use](https://platform.claude.com/docs/en/agents-and-tools/tool-use/computer-use-tool#handle-coordinate-scaling-for-higher-resolutions) and [browser use](https://platform.claude.com/docs/en/agents-and-tools/tool-use/browser-use-tool#targets-and-coordinates) toolsets are an exception to automatic resizing. The API rejects a `tool_result` image that exceeds the model's limits with a validation error instead of resizing it. Resize those images in your application before returning them, then scale the coordinates Claude returns back to your screen's dimensions.
486484
487<CodeGroup>
488 ```bash cURL
489 # This local coordinate conversion makes no API request, so there's nothing
490 # to show for cURL. See the SDK tabs.
491 ```
485<CodeGroup exclude="shell">
486 <CodeGroupItem language="cURL">
487 Convert the coordinates in code.
488 </CodeGroupItem>
492489
493 ```bash CLI
494 # This local coordinate conversion makes no API request, so there's nothing
495 # to show for the CLI. See the SDK tabs.
496 ```
490 <CodeGroupItem language="CLI">
491 Convert the coordinates in code.
492 </CodeGroupItem>
497493
498494 ```python Python
499495 # This helper calls resized_size from the resize example on this page.
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