SiteLens Compare · Browser Intelligence

Baseline vs current — visual diff with a clear pass/fail.

SiteLens combines browser automation, observability, diagnostics, visual regression, and evidence into one coherent workflow. Compare PNGs with a pixel threshold, and correlate visual changes with browser behavior via cross-run diagnostics (sitelens_compare_browser_runs). Local Desktop/MCP or Cloud/API when you choose hosted execution. See cross-run comparison.

Open Compare dashboard Desktop (local) MCP tools

How it works

Local (free)

Desktop and MCP compare files on disk. Screenshots are not uploaded unless you explicitly use Cloud/API.

Tools: sitelens_compare_screenshots, sitelens_compare_url, sitelens_compare_local_runs

Cloud/API

POST /compare with baseline and current image URLs. Results include diff URL and JSON metadata under tmp/compare-results.

Output

Diff PNG (magenta highlights), changed pixel count, changed %, and pass/fail against your threshold.

Geographic capture (SiteLens Pro) lets you capture the same page from two supported countries and compare those experiences in the dashboard, with each side’s exit verification beside the screenshots.

Example MCP prompts

  • Compare two PNG paths: sitelens_compare_screenshots with baselinePath and currentPath.
  • Capture a URL then diff: sitelens_compare_url with url and baselinePath.
  • Two QA runs: sitelens_compare_local_runs with includeScreenshotDiff: true.