feat: add diff screenshot command for pixel-level image comparison#214
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dannyhw wants to merge 14 commits intocallstackincubator:mainfrom
Open
feat: add diff screenshot command for pixel-level image comparison#214dannyhw wants to merge 14 commits intocallstackincubator:mainfrom
diff screenshot command for pixel-level image comparison#214dannyhw wants to merge 14 commits intocallstackincubator:mainfrom
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Uses odiff-bin (SIMD-optimized) to compare the current device screenshot against a baseline image, producing a visual diff output and mismatch statistics. Mirrors the agent-browser CLI interface. Usage: agent-device diff screenshot --baseline before.png [--out diff.png] [--threshold 0.2]
thymikee
reviewed
Mar 13, 2026
package.json
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| "dependencies": { | ||
| "@clack/prompts": "^1.0.0" | ||
| "@clack/prompts": "^1.0.0", | ||
| "odiff-bin": "^4.3.2" |
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odiff is 22,5 MB, can we find a lighter alternative?
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replaced with a custom solution using just pngjs for decoding pngs
Author
|
updated now to set the time to 9:41 before any screenshots so the time won't be a factor in diffs |
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Uses pngjs to decode pngs and then compares each pixel with euclidean distance.
Mirrors the agent-browser CLI interface.
Usage:
agent-device diff screenshot --baseline before.png [--out diff.png] [--threshold 0.2]
try it out with
use scroll down for diff
take two equal screenshots
Example diff
