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Mozilla Rule

Unaltered Firefox may be redistributed without permission, free of charge and unmodified

Catalog row in Vendor License Rules · Cited

Kind
Restriction
Statement
Distribution Policy for Mozilla Software (undated; as published on 2026-09-27): unaltered copies of Firefox and other Mozilla software from Mozilla.org may be distributed without express permission, provided distribution is not subject to a fee or tied to a purchase, no personal information is collected in the context of the distribution, nothing is added, removed or changed (including extensions, default settings and search codes), the installation process is not modified, and the most recent version is distributed.
Applies when
Redistributing Mozilla-branded installers (for example on intranets, media or devices).
Applies to
Third parties redistributing official Firefox and other Mozilla software.
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