CLS checker: find the elements that cause layout shift
For each page: the real-user Cumulative Layout Shift, how far it is above the 0.1 limit, and the elements that move during loading with their shift score, so you know what to fix. The example pages fail CLS for real mobile visitors.
Input
Output fields
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The PageSpeed Insights & Core Web Vitals Checker: Causes & Fixes Actor is ready to run with the inputs already set for "CLS checker: find the elements that cause layout shift". Sign up or log in and you'll land in Apify Console with a copy of this exact task.
Start the "CLS checker: find the elements that cause layout shift" task
The PageSpeed Insights & Core Web Vitals Checker: Causes & Fixes Actor will start running based on the input automatically. You can also change all the input fields, like page urls and devices, to match your specific use case.
Receive the "CLS checker: find the elements that cause layout shift" output
Monitor the progress in real time. You will be notified as soon as your dataset is complete and ready for review. Each result includes data such as URL and mobile.
Integrate into your workflow
The final output is delivered in JSON, CSV, or Excel format, ready to be plugged into your workflow. You can also run the "CLS checker: find the elements that cause layout shift" task via API.
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Connect "CLS checker: find the elements that cause layout shift" with 100+ integrations, or run it via API or MCP.
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