Kiwix Privacy Policy - Your Privacy and Offline Knowledge Access- Kiwix
1 2 3

Kiwix software does not record any personal information about its users.

This privacy policy applies to www.kiwix.org.

Last Update: 23 September 2025

Analytics

This website uses Matomo On-Premise to generate statistics about the usage of the site. Matomo is fully open-source, and we do not share this data with third parties. Matomo is configured to operate without cookies and does not collect personal data. No consent is required for this anonymous analytics.

In addition, we use Google Analytics 4 (GA4) to better understand how visitors interact with our website. GA4 is configured to respect user privacy:

  • IP addresses are anonymised (the last octet is removed).
  • No personally identifiable information (PII) is collected or shared with Google.
  • Data is processed in accordance with Google’s privacy policy and the Google Analytics Terms of Service.
  • GA4 data is retained for 2 months and is not shared with third parties.

Tracking of backend usage

The backend of our website is exclusively accessed by members of our team and therefore password protected. For security reasons we track all activity in the backend (including all attempts to log into the backend).

WP1

We rely on Wikimedia OAuth to identify users and link them to their Wikimedia account so that they can request Wikipedia-on-demand subsets. Please refer to the WMF’s privacy policy to see how they might handle this data. Your Wikimedia email address may be retrieved during this process: that email address, and any email address you provide to us on the WP1 site, are used solely for sending you notifications when your ZIM files have been processed. We will never sell your email address, or share it with any third party.

Embedded videos

This website may contain videos embedded from platforms like YouTube or Vimeo. Please note that these platforms may be able to track your visit on our website and your usage of these videos. For more details, please refer to the YouTube privacy policy or the Vimeo privacy policy.

Forms

If you fill in and submit a form on this website, all data you provide is stored on our servers in Basel (Switzerland), operated by Cyon GmbH (see below). In addition, this data is transferred by email to our staff. Since email is not a secure channel we strongly recommend that you do not transfer any sensitive information through our forms.

Our forms implement the Google reCAPTCHA service as a protection against spam. In addition to certain standard Google cookies, reCAPTCHA sets a necessary cookie (_GRECAPTCHA) when executed for the purpose of providing its risk analysis.

Donations

Our online donation form is operated by Donorbox (Rebel Idealist LLC, 1885 Mission Street, San Francisco, CA 94103), while payments are processed by Stripe (Stripe, Inc., 185 Berry Street, Suite 550, San Francisco, CA 94107). For more information, please refer to the Donorbox privacy policy or the Stripe privacy policy respectively.

Google Tag Manager (GTM)

We use Google Tag Manager (GTM) to manage website tags (e.g., analytics scripts) efficiently. GTM itself does not collect personal data, but it may deploy tags that do. All tags loaded via GTM are disclosed in this policy and are subject to your consent where applicable.

Your rights as a data subject

To execute your rights regarding your personal data as guaranteed by Chapter 3 of the GDPR and the Swiss Data Protection Act (DPA), you can contact us anytime through hello@kiwix.org.

  • Access, correct, or delete your data.
  • Object to or restrict processing.
  • Withdraw consent for cookies/tracking (where applicable).

Kiwix Apps, Server logs and Data Retention

For any file request our webserver logs certain data about the device the request is coming from like IP address, operating system and web browser. However, this data is not used to track individual users, and it is stored only for a limited time period.

GA4 data is stored for two months (default).

As far as the Kiwix app goes, it does not collect any data on your usage of the app. Basically we only know that people downloaded Kiwix, nothing more.

Website hosting

Our website is hosted by Cyon GmbH in Basel (Switzerland). For more information about how they process personal data on their servers, please read their privacy policy (available in German only).

Third-Party Data Processing

For tools like Google Analytics and reCAPTCHA, we rely on the following third parties:

Changes to This Policy

We may update this policy occasionally. The latest version will always be posted on this page, with the “Last Update” date revised.