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Step-by-step guide

MuninCompare

Install the unpacked Chrome extension and compare two fictional analytics HAR captures.

For analysts or QA teams reviewing an authorised before/after browser journey.

Get MuninCompare · $39

Actual Chrome for Testing 151 capture: MuninCompare 1.0.1 comparing fictional analytics HAR files.
Actual Chrome for Testing 151 capture: MuninCompare 1.0.1 comparing fictional analytics HAR files. View full size

Before you start

  • Google Chrome 120+ with Developer mode and Load unpacked allowed; tested in Chrome for Testing 151 on Linux. Managed browser policy may forbid this.
  • MuninCompare-1.0.1.zip; this is not a Chrome Web Store listing.
  • Two HAR files from an authorised, comparable journey; start with the fictional examples.

Your first result

  1. Install unpacked

    Extract MuninCompare-1.0.1.zip to a permanent folder. Open chrome://extensions in Chrome, enable Developer mode, click Load unpacked and select the extracted extension folder containing manifest.json.

  2. Open and load

    Click its toolbar icon or press Alt+Shift+M. Choose Load fictional example, or load your own before and after HAR files.

  3. Review and export

    Review added, removed, changed and repeated GA4/Adobe Analytics events plus unsupported traffic. Preview and download redacted HTML, CSV or JSON; review content before sharing.

  4. Uninstall

    In chrome://extensions remove MuninCompare and delete its extracted folder. The extension stores no files or browser data.

A worked example

Find changes in a fictional checkout journey

Input: The included fictional changes-before.har and changes-after.har, captured as equivalent test journeys.

  1. Load fictional example in the extension.
  2. Review changes and unsupported traffic.
  3. Open export preview and download the redacted HTML report.

Expected result: A local difference report with added, removed, changed or repeated supported analytics events. It does not certify correct tracking or consent.

Download illustrated manual and fictional HAR examples (ZIP)

Troubleshooting

Load unpacked is unavailable

A managed Chrome policy can block Developer mode or unpacked extensions. Ask your administrator or use a profile you control.

Events are missing

Check unsupported-traffic counts. Custom collection domains, Adobe Target and Adobe Web SDK are not supported.

Compatibility & limits

  • No network requests or automatic capture; selected HAR data is processed in tab memory. HAR files can contain secrets, so handle originals carefully.
  • Redaction is not guaranteed anonymisation. Review exports before sharing.
  • Chrome for Testing 151 on Linux was tested; other Chromium browsers and real customer journeys were not.

Need a hand?

Tell us the product, host application and version, what you tried, and the exact error. Contact support with a fictional example; keep private customer files and passwords out of your message.