MuninCompare

MuninCompare is a downloadable Chrome extension for analysts, developers and QA teams who need to review what changed between two captures of the same authorised browser journey. Instead of reading two HAR files line by line, load a Before capture and an After capture to compare supported GA4 and Adobe Analytics events. The results identify added, removed, changed and repeated event groups, with details you can inspect before sharing a report.

A practical starting point is a site or tag change. Record the same steps, consent choices and browser state before and after that change, save both captures as HAR files, and load them into MuninCompare. It compares the supplied files locally in its browser tab. It does not capture traffic, connect to your analytics account, collect production data or provide a live monitoring service.

The one-time $9.99 download includes the readable Manifest V3 extension, an illustrated installation and usage manual, and four fictional examples. Requires Chrome 120 or later with Developer mode and Load unpacked enabled; this is an unpacked download rather than a Chrome Web Store installation. The release has been tested in Chrome for Testing 151 on Linux. Read the free manual and try the fictional HAR examples as reference material before deciding whether the paid extension fits your workflow. Final checkout total and any tax are shown at checkout.

Export a redacted HTML report, CSV or JSON after reviewing the comparison. Redaction is best effort: reports are not guaranteed anonymous, so inspect every export before sharing it. The tool accepts HAR files up to 10 MiB and 10,000 entries each. Adobe Web SDK, Adobe Target and custom or first-party collection domains are unsupported; unsupported requests are reported rather than treated as clean.

A comparison describes the captures you supplied. It cannot establish that the journeys were equivalent, prove correct tracking or certify consent compliance. A missing event can require investigation of the capture itself, and an unchanged result is not a guarantee that your analytics setup is correct. Use MuninCompare as a focused review aid alongside your normal testing process.

The screenshot uses included fictional analytics data. It was captured from the paid 1.0.1 extension; the interface retains a v1.0.0 label.

What problem it solves

After a site or tag change, reading two raw HAR files to spot event differences is slow. MuninCompare groups supported GA4 and Adobe Analytics changes for manual review; it does not certify tracking correctness.