Content Moderation Practices by Mozilla

MozillaUpdated 9 Dec 2025

This document outlines Mozilla's comprehensive content moderation policies, detailing the rules for user-generated content across its various products. It explains how content is moderated, the process for reporting violations, and the steps users and reporters can take to appeal moderation decisions. The policy aims to foster a welcoming online community while ensuring compliance with applicable content rules.

Content Moderation at Mozilla

Last Updated April 29, 2024

Content rules

Mozilla offers several products that allow users to share and exchange content — including original text and images, third party web pages or articles, and software applications. Content shared through those products, or anywhere in the Mozilla Community, must comply with the applicable content policies.

All products must comply with Mozilla’s Acceptable Use Policies. In addition, content shared on Mozilla.Social is subject to the Mozilla Social Content Policies; and content shared in the Mozilla Add-On Marketplace (AMO) is subject to the Firefox Add-on Policies. New and experimental products that host user-generated content may have their own content policies: when using one of these products, please check the product’s home page or review its Terms of Service to learn which content policies apply.

How we moderate

Mozilla seeks to create a vibrant online community that welcomes contributors and visitors from all communities, nationalities, and backgrounds. Our content moderation efforts reflect that goal.

Each applicable Mozilla product allows users to report content that is illegal, or that violates the governing policies. A human reviews each content-related report that we receive. Content policy violations on AMO and Mozilla Social are assessed by a dedicated team of human moderators. Content policy and Acceptable Use Policy violations for other products are reviewed by members of the applicable product teams. In certain cases, reports of illegal content will be reviewed by a member of our Legal team. Add-ons that have been reported for technical or AMO Policy violations, as well as feedback that we receive about add-ons hosted on AMO, will be assessed by a human on the AMO product team. This assessment will generally involve reviewing the listing, as well as the add-on’s codebase and features.

Where we receive duplicative reports about the same piece of content, we will do a single review and will notify later reporters that the content has already been assessed, rather than reviewing and responding separately to each report.

Moderation decisions

When a moderator determines that content does not violate our policies, we will notify the reporter of that determination and will take no action against the content. In most cases, we will provide the reporter the opportunity to appeal.

When a moderator finds that one of our policies has been violated, they will take the action dictated by that policy, including:

adding a content warning,

removing the content, or

suspending the account.

We will notify both the reporter and the user that a violation was found, and we will provide the user the opportunity to appeal.

Where a violation is punishable by a warning or content removal, additional violations may lead to suspension. In such cases, we will also notify the user that their account is being suspended based on a history of multiple violations. We will provide opportunities to separately appeal both the latest moderation decision, and the resulting suspension. In some products, these appeals can be combined, while in others they must be done separately.

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Document info
HTML document. Document created on Tue Nov 4th, 2025. Last updated on Tue Dec 9th, 2025.
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Licensed under CC BY 4.0 (Attribution).
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