Cookie Notice

Effective Date June 1, 2023

This Cookie Notice explains how querifai GmbH ("querifai", "we", or "us") uses cookies and similar technologies to recognize you when visiting our website at

We explain the technologies and why we use them, as well as your rights to control our use of them. If you have any questions, feel free to contact us at

What Are Cookies

Our website use cookies and similar technologies such as pixel tags, web beacons, clear GIFs, mobile identifiers, and JavaScript (collectively, "Cookies") to enable our servers to recognize your web browser and tell us how and when you visit and use our websites.

Cookies are small data files that are placed on your computer or mobile device when you visit a website. Cookies that are set by us are called "First Party Cookies". Our usage of them is explained in greater detail below.

Cookies set by parties other than us are called "Third Party Cookies". Third Party Cookies enable third party features or functionality to be provided on or through the website (e.g. advertising, interactive content and social sharing). The parties that set these Third Party Cookies can recognize your device, both when it visits our website, and also when you visit other websites that have partnered with them - the google analytics cookie is one example.

How We Use Cookies And Similar Technologies

We use cookies on our website to analyze trends, learn about our user base, and operate and improve our Services.

For example, we use Cookies to improve our website routing by tracking navigation habits and measuring site performance. By this we can also customize user experiences and collect analytics for fraud prevention. We may also supplement the information we collect from you with information received from third parties, including information collected from Third Party Cookies.

We use the following types of Cookies:

Essential Cookies

We place only one essential cookie on your computer that remembers your choice of cookies, so that we do not need to ask you on every page request again.

Functional Cookies

Functional Cookies are used to record your choices and settings, maintain your preferences over time and recognize you when you return to our Services. These are also necessary to provide you with core features of our service, including log in to your account. Disabling these Cookies will make certain features and services unavailable.

Performance/Analytical Cookies

Performance/Analytical Cookies allow us to understand how visitors use our Services such as by collecting information about the number of visitors to the Services, what pages visitors view on our Services, how long visitors are viewing pages on the Services, mouse clicks, mouse movements, scrolling activity, and text typed into the Services. Performance/Analytical Cookies also help us measure the performance of our advertising campaigns in order to help us improve our campaigns and the Services’ content for those who engage with our advertising. For example, Google uses cookies in connection with its Google Analytics services. Google’s ability to use and share information collected by Google Analytics about your visits to the Services is subject to the Google Analytics Terms of Use and the Google Privacy Policy. You have the option to opt-out of Google’s use of cookies by visiting the Google advertising opt-out page at or the Google Analytics Opt-out Browser Add-on at

In some cases, we may use Cookies to collect Personal Data or to collect information that becomes Personal Data if we combine it with other information. For more information about how we process your Personal Data, please read our Privacy Policy.

Cookies We Serve Through Our Technologies

The specific Cookies served through our Services, and the purposes they perform, are described below:

Essential cookies
Cookie name Who serves this cookie Description Duration
_consent querifai This cookie is used to store the cookie consent state 6 months
Functional cookies
Cookie name Who serves this cookie Description Duration
session querifai This cookie is used to remember various information, incl. form data, your user id, etc. when you navigate the website. Contents of it are encrypted to keep your information secure. You can learn more about this cookie here. It is one of the core pillars of our technical framework. Many features will not work without it. If you create an account, you need to accept this cookie, in order for the logged-in area of the website to work. However, we do not use this cookie to track your activity. Session scope
try_out_user_id querifai When you upload a file to our try-it-out widget on, we create a temporary user for you. To recognize you, when you use this feature and move across the website, we place this cookie on your computer, to always retrieve your image again. 180 days
user_id querifai When you create a user account for our website, we use this cookie to recognize you when you return to our site. 180 days
dataset_id querifai When you upload a file to our try-it-out widget on, we deposit this on our servers. This cookie helps us to identify your file and distinguish them if you upload several ones. 180 days
image_ready_for_analysis querifai This is a helper cookie for the try-out-widget on the homepage. It is part of the flow that is used to display results of the widget. 180 days
PHPSESSID This is a cookie that is set by We use datatables.js as a UI library to display tabular data in the logged-in section of our site. 180 days
Performance/ Analytical cookies
Cookie name Who serves this cookie Description Duration
visitor_id querifai We use this cookie to understand how you use our services and identify improvement potentials 180 days
_ga Google This cookie registers a unique ID that is used to generate statistical data on how the visitor uses the website. 2 years
_ga_TDLSTDRG7J Google This cookie registers a unique ID that is used to generate statistical data on how the visitor uses the website. 2 years