Advanced Features
    Feature Guide

    Baseline Comparisons

    Capture a snapshot of your site metrics and compare future checks against it.

    Part of Website change detection — the full answer, the facts and the alternatives in one place.

    Updated 2026-03-03
    1 min read
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    Baseline Comparisons#

    Pro Plan and Above#

    Baselines let you capture a "known good" snapshot of your site's metrics, then compare all future checks against it.

    When to Use Baselines#

  1. Before a deployment — Capture baseline, deploy, compare to catch regressions
  2. After fixing issues — Set a new baseline as your improved benchmark
  3. Quarterly reviews — Track progress by comparing against previous quarter's baseline
  4. How to Create#

  5. Go to your site's Baselines tab
  6. Click "Create Baseline"
  7. Name it (e.g., "Pre-v2.0 Launch", "Q1 2026 Benchmark")
  8. Optionally add a description
  9. LemWatch captures current metrics:
  10. Performance scores (mobile + desktop)
  11. Core Web Vitals (LCP, CLS, INP)
  12. Response time
  13. Security grade
  14. SEO score
  15. Uptime percentage
  16. Comparing Against Baselines#

    On the site detail page, select a baseline from the dropdown to see a side-by-side comparison of all metrics. Improvements show in green, regressions in red.

    Multiple Baselines#

    Keep multiple baselines per site to track progress over time. Mark one as "active" to use as the default comparison point.

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