Perfmap
Heatmap of resources loaded in the browser using the Resource Timing API
What is Perfmap?
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Summary
A front-end performance heatmap of resources loaded in the browser using the Resource Timing API.
The heatmap colours and the first ms value indicate at what point in the page load did the image finished loading. It's a good indicator of user experience. "It took 3450ms before the user saw this image." The second value in brackets is the time it took the browser to load that specific image.
The legend attached to the bottom of the page shows timings for the full page load and hovering over a coloured area on the heatmap will move the timeline indicator to show you when that image was fully loaded.
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Safety
Risk impact
Perfmap is risky to use as it requires a number of sensitive permissions that can potentially harm your browser and steal your data. Exercise caution when installing this extension. Review carefully before installing. We recommend that you only install Perfmap if you trust the publisher.
Risk likelihood
Perfmap may not be trust-worthy. Avoid installing if possible unless you really trust this publisher.
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