# mozregression - Engineering Productivity Project of the Month

DevFeed: [mozregression - Engineering Productivity Project of the Month](<https://devfeed.tech/articles/mozregression-engineering-productivity-project-of-the-month-20300.md>)

Original publisher: [Read original article](<https://parkouss.wordpress.com/2016/01/11/mozregression-engineering-productivity-project-of-the-month/>)

Author: parkouss

Published: 2016-01-11T14:47:05Z

Content type: article

Language: en

Sources: [Mozilla Automation](<https://devfeed.tech/sources/mozilla-automation.md>)

Topics: [Firefox](<https://devfeed.tech/topics/firefox.md>), [Mozilla](<https://devfeed.tech/topics/mozilla.md>), [Tool](<https://devfeed.tech/topics/tool.md>)

Tags: [bug](<https://devfeed.tech/tags/bug.md>), [contribution](<https://devfeed.tech/tags/contribution.md>), [debug](<https://devfeed.tech/tags/debug.md>), [documentation](<https://devfeed.tech/tags/documentation.md>), [engineering-productivity](<https://devfeed.tech/tags/engineering-productivity.md>), [firefox](<https://devfeed.tech/tags/firefox.md>), [firefox-for-android](<https://devfeed.tech/tags/firefox-for-android.md>), [irc](<https://devfeed.tech/tags/irc.md>), [maintainers](<https://devfeed.tech/tags/maintainers.md>), [mozilla](<https://devfeed.tech/tags/mozilla.md>), [mozregression](<https://devfeed.tech/tags/mozregression.md>), [regression](<https://devfeed.tech/tags/regression.md>), [reporting](<https://devfeed.tech/tags/reporting.md>), [tool](<https://devfeed.tech/tags/tool.md>)

## AI overview

This article presents mozregression, a Mozilla Engineering Productivity project for finding regressions in Firefox and Firefox for Android. The tool downloads pre-built builds between known good and bad dates or changesets and uses bisection to identify the smallest range where a regression appears. It also describes its graphical interface, ongoing work, maintainers, contribution opportunities, and bug reporting.

## Source excerpt

Hello from Engineering Productivity! Once a month we highlight one of our projects to help the Mozilla community discover a useful tool or an interesting contribution opportunity. This month's project is mozregression! Why is mozregression useful ? mozregression helps to find regressions in Mozilla projects like Firefox or Firefox on Android. It downloads and runs ... Continue reading mozregression - Engineering Productivity Project of the Month