SiteLens Compare

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

Reuse SiteLens screenshot capture, then compare PNGs with a pixel threshold. Get a diff overlay, changed percentage, and pass/fail — locally on your machine or via Cloud/API when you choose hosted execution.

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.

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.