Long Task Source Grouping
Map uploaded long-task records to scripts and stacks; compare time contribution.
Group supplied task durations by source/stack, with overlap warnings and a per-record beyond-50-ms diagnostic.
Using Long Task Source Grouping
Map uploaded long-task records to scripts and stacks; compare time contribution.
- Start with Try worked example. Or open supported local evidence. startMs,durationMs,script or stack. Overlapping/multiple-thread records can double-count time.
- Use Details & settings to adjust the declared inputs, thresholds or component content. Review cards retain source evidence and any supported manual decisions.
- Open Preview for the actual analysis or interactive component. Test keyboard behavior and narrow layouts before relying on generated UI.
- Use Export for task artifacts and the complete workflow ZIP. Save review retains settings/decisions and source fingerprints; file-based projects need the original sources to reopen.
Example
The tailored example for Long Task Source Grouping demonstrates Group supplied task durations by source/stack, with overlap warnings and a per-record beyond-50-ms diagnostic.
Questions & answers
What does Long Task Source Grouping support?
Group supplied task durations by source/stack, with overlap warnings and a per-record beyond-50-ms diagnostic.
What input should I use?
startMs,durationMs,script or stack. Overlapping/multiple-thread records can double-count time.
What can I download?
Use the Export tab for task-specific artifacts, typed JSON, CSV and a workflow ZIP. Supported artifacts can include compressed files, reviewed CSS, source-position evidence, screenshot PNGs or qualified review reports.
Does this run a live website audit or deploy changes?
No. Performance diagnostics use imported evidence, explicit simulations or selected local bytes. Builders export code for you to review and integrate. No URLs are crawled, no service worker is installed and nothing is deployed. Public pages retain approved ads and optional consent-based analytics.
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