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Terms of Use


We, eyeo GmbH, Lichtstrasse 25, 50825 Cologne, Germany ("eyeo"; "we"), have developed the browser extension Crumbs which can be downloaded via at our website and other domains. Among other things, Crumbs allows you to customize your web experience by sharing limited and anonymized information, disable online tracking, enhance online privacy protections and block advertisers from collecting information that directly identifies you.

What does that mean?

Crumbs is provided free of charge to you as a user. However, we've reached a point where further Terms of Use, such as these, are necessary. This protects you and it protects us. These Terms of Use apply to your use of Crumbs.

Non-permitted use of Crumbs

You may not use Crumbs to do anything that violates these Terms of Use, is unlawful or fraudulent or infringes or violates someone else’s rights, including their intellectual property rights. Additionally, you may not use Crumbs on websites where you agreed not to use it.

Limited Grant of Rights

Crumbs is an open-source project licensed under GPLv3 . The use of Crumbs is subject to the restrictions of the GPLv3 .

Crumbs and third-party services and websites

By using Crumbs, you may interact with third-party services, websites and applications (“Third-Party Offerings”). Third-Party Offerings may have their own terms of use and privacy policies. You understand and agree that your use of Third-Party Offerings will be governed by their terms of use and privacy policies. You also understand and agree that eyeo is not responsible or liable for the content, features or acts of Third-Party Offerings

How is Crumbs processing my data?

Crumbs uses your browsing data to generate anonymized interests that reflect your browsing behavior. These interests never leave your device other than in an anonymized manner. The data processing is only performed locally on your machine and your personal browsing data is never collected or shared by Crumbs. To support free content, Crumbs enables the serving of privacy-preserving, interest-based ads by select websites who commit to respecting your privacy choices and rights. This anonymized interests sharing is enabled by default and can be disabled at any time in the application settings.

What if Crumbs does not work properly?

Crumbs is provided "as is" and on an "as available" basis. Your use of Crumbs is at your own risk. eyeo makes no warranty or condition that Crumbs will meet your requirements or be uninterrupted, timely, secure or error-free.

However, we can guarantee that Crumbs doesn’t share your personal data to advertisers. We are only processing your data locally and then sharing anonymized data.

In the event that you detect any defect with Crumbs, please inform us as soon as possible

Additional information

This Terms of Use shall be governed by the laws of the Federal Republic of Germany. If you have no place of jurisdiction in Germany or in any other EU member state, if you have transferred your permanent domicile abroad after these Terms of Use take effect or if your domicile or usual place of residence is unknown at the time legal action is taken, the sole place of jurisdiction for all disputes arising from this agreement will be the location of our registered offices.

We reserve the right to terminate your use of Crumbs if we determine that you have violated these Terms of Use or where we are required or permitted to do so by law.

We reserve the right to amend and adapt these Terms of Use with effect for the future. You can request the currently applicable version of the Terms of Use from our legal department. You will be notified no later than one month before new Terms of Use take effect. If you do not object to the validity of the new Terms of Use within one month after they take effect, you will be deemed to have accepted the new Terms of Use. We will inform you separately in suitable form about the significance of the one month's notice period, your right to object and the legal consequences of non-objection. This amendment mechanism does not apply to amendments to the parties' main contractual obligations.

Crumbs Global Privacy Control (GPC)

Crumbs hides cookie consent popups by default. This functionality may prevent the website from information you about their cookie policy and topics related to data processing. You may disable this feature at any moment in the settings of Crumbs.

Crumbs Email Relay

Crumbs email relay allows you to keep your primary email address secret from online services by making alias email addresses. This feature allows you to keep your email address private.

A Crumbs Account is required to use the email relay service (“Service”).

You should only use the email relay according to these Terms of Service. This Service is for personal use only. No sublicense, resell or commercial use of the Service is permitted. You are solely responsible for what you write and receive via email when using the Service.

For Crumbs to be able to provide you with the Service, you have to give us the right to process your data including: your email address, the aliases and the emails you send and receive via the email relay. Crumbs does not log or monitor the content of emails sent and received via the email relay.

Crumbs’s Intellectual Property. Neither Crumbs nor its licensors grant you any intellectual property rights in the Service that are not specifically stated in the license attached to it.

You are solely liable for your use of the Service

Update and termination of your rights and obligations

Termination. These Terms apply until either you or Crumbs decide to end them. You can choose to stop using the Service at any time. Crumbs can suspend or end anyone’s access to the Service at any time for any reason. Crumbs may decide to end the Service at any moment.

If we terminate your access to the Service without specific cause, we will inform you in due time and you will continue to have access to the Service for the communicated period. In case we have reasons to believe that you have violated these Terms, Crumbs reserve the right to terminate your use of the Service.