MuninCompare

The sales report says nobody has bought anything since Tuesday, three weeks after the new version of the shop went live. In cases like this the shop often sells fine, and only the tracking code has stopped reporting each purchase. MuninCompare lines up two recordings of the same visit, one made before a change and one after. It lists the Google Analytics 4 or Adobe Analytics events that were removed, added, changed or sent twice.

Those recordings are HAR files, which Chrome's developer tools can save with every request a page made. You capture them yourself, and the extension reads both inside a browser tab. The guide says it makes no network requests of its own and warns that HAR files can hold passwords. Results go out as a redacted HTML report, CSV or JSON file, and the site asks you to check each export before sharing.

Installation happens by hand: you unpack a ZIP file and load it through Developer mode in desktop Chrome, outside the Chrome Web Store. Some company browser policies block that step. The site lists Chrome on Linux as the tested setup and keeps Adobe Web SDK, Adobe Target and custom collection domains outside its coverage. Four fictional HAR files come with the download for practice.