Common Voice Legal Terms by Mozilla
These are the legal terms governing participation in Mozilla's Common Voice project. They outline eligibility requirements, rules for contributing voice data and text, and how contributions are made available under a Creative Commons CC0 public domain dedication. The terms also cover account usage, disclaimers of liability, and the governing law for the agreement.
Common Voice Legal Terms
Effective October 31, 2025
As of the “Last Updated” date above, the information and datasets we make available through Common Voice will now be accessible through Mozilla Data Collective (“MDC”).
Through Common Voice, you can donate your voice, written sentences, and the other resources we need to build an open-source voice database that anyone can use to make innovative voice recognition apps for devices and the web.
You may only participate in Common Voice if you agree to these Common Voice Legal Terms (the “Terms”). Your use of Mozilla Common Voice is governed by these Terms and Common Voice Privacy Notice.
Eligibility
Common Voice is open to anyone over the age of 19. If you are 19 or under, you must have your parent or guardian’s consent and they must supervise your participation in Common Voice.
Common Voice is part of the Mozilla Community. As a result, if you chose to participate, you agree to follow the Mozilla Community Participation Guidelines.
Your Contributions
We make Mozilla’s Common Voice dataset available under the Creative Commons CC0 public domain dedication. That means it’s public and we’ve waived all copyrights to the extent we can under the law. If you participate in Common Voice, we require that you do the same. You agree that Mozilla may offer all of the contributions you make available to Common Voice, including text, recordings, validations, and feedback (the “Contributions”) to the public under the CC0 public domain dedication.
In order to participate in Common Voice, Mozilla also requires that you make three assurances:
First, that your Contributions are entirely your own creation.
Second, that your Contributions do not infringe on any third parties’ rights.
Third, that your Contributions comply with Mozilla’s Acceptable Use Policy.
If you cannot make these assurances, you may not participate in Common Voice.
In addition, if you participate in the Common Voices Spontaneous Speech project, you agree not to include any sensitive or personal data about yourself and others in the recordings you submit.
Lastly, Mozilla makes the Common Voice datasets available to the general public exclusively through MDC under a Creative Common Zero (CC0) license, unless otherwise specified. Consistent with our data stewardship principles we ask that you not post, distribute, or mirror any Common Voice dataset, in whole or in part, on other platforms or services, and that access by others take place only through MDC.
Your Account
You do not have to create an account to participate in Common Voice.
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