Performance workflows · Practical guide
Create a useful website performance baseline
Measure representative pages and interactions under recorded conditions before selecting optimizations or comparing hosting changes.
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10 practical guides · Learning center
Performance workflows
Establish a baseline, investigate slow experiences, and compare controlled changes with clear measurement limits.
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Performance workflows10
10 guides available
Performance workflows · Practical guide
Investigate a slow first response
Break down the period before the first response bytes arrive so the team can investigate the right layer of a slow page request.
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Plan improvements to a page's main image
Investigate the image that matters to initial content display before changing file formats, loading behavior, or layout rules.
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Investigate unexpected layout movement
Find what moves during loading or interaction and record the content or resource that triggers the movement.
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Investigate a slow website interaction
Turn a lagging menu, filter, or form into a precise interaction test that can guide application and frontend work.
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Map a website's caching layers
Explain where responses or data may be reused so a stale-content report can be investigated without clearing unrelated caches repeatedly.
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Review the performance cost of third-party scripts
Connect external browser scripts to business purposes and observed page behavior before deciding which integrations to change.
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Set a performance budget for a page template
Choose project-specific limits that help a team review new content and features against the experience it intends to provide.
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Compare lab and field performance results
Understand why a controlled test can differ from real-visit measurements before treating one report as proof that another is wrong.
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Keep a performance change log
Preserve the context behind optimization work so the team can tell which change was tested and whether the complete user experience improved.
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Where should I start before making website performance changes?
Choose the page or interaction first. Match the test conditions, identify the work causing delay, and verify that improvements preserve functionality.
- Create a useful website performance baseline: Measure representative pages and interactions under recorded conditions before selecting optimizations or comparing hosting changes.
- Compare lab and field performance results: Understand why a controlled test can differ from real-visit measurements before treating one report as proof that another is wrong.
Which guide matches a slow first response, page movement, or slow interaction?
- Investigate a slow first response: Break down the period before the first response bytes arrive so the team can investigate the right layer of a slow page request.
- Investigate unexpected layout movement: Find what moves during loading or interaction and record the content or resource that triggers the movement.
- Investigate a slow website interaction: Turn a lagging menu, filter, or form into a precise interaction test that can guide application and frontend work.
Which terms help distinguish the performance problems being measured?
- Time to First Byte: TTFB measures the time from a request's start until the first byte of its response arrives.
- Cumulative Layout Shift: CLS measures unexpected visual movement of page elements using a session-window method.
- Interaction to Next Paint: INP assesses page responsiveness by examining the latency of qualifying interactions over a visit.