What are cookies?
Cookies are small text files stored in your browser when you visit a website. They help remember your settings and, with your consent, analyse how the website is used. Other browser storage technologies can serve similar purposes.
Why do we use cookies?
We use essential technologies to keep the website working properly and to remember your settings. With your consent, we also use Google Analytics and Microsoft Clarity to measure traffic and analyse interactions so that we can keep improving the website.
Types of cookies we use
1. Essential cookies
Essential cookies and similar storage provide the basic functions of the website, such as remembering your cookie preferences. Consent is not required for these essential purposes.
| Name | Provider | Category | Purpose | Duration |
|---|---|---|---|---|
| graphia_cookie_consent | Graphia (graphia.cz) | Essential (browser local storage – localStorage, not a cookie) | Stores your choice in the cookie settings | Approximately 1 year |
| __cf_bm | Cloudflare | Essential – security | Protects the website from automated and malicious traffic. Helps distinguish regular visitors from bots. | 30 minutes of inactivity |
Activation: Always active. No consent required.
2. Analytics cookies
We only use analytics cookies with your consent. They help us measure traffic and analyse how visitors interact with the website. For this we use Google Analytics and Microsoft Clarity. Rejecting them does not affect your use of the website.
| Name | Provider | Category | Purpose | Duration |
|---|---|---|---|---|
| _ga | Google Ireland Limited (Google Analytics) | Analytics | Distinguishes individual visitors for traffic statistics | 2 years |
| _ga_<GA4_ID> | Google Ireland Limited (Google Analytics) | Analytics | Keeps session state and measures visits. The part of the name after “_ga_” matches the ID of the specific GA4 property. | 2 years |
| _clck | Microsoft Corporation (Microsoft Clarity) | Analytics (first-party) | Stores a pseudonymous visitor identifier and its settings to analyse website use | 1 year |
| _clsk | Microsoft Corporation (Microsoft Clarity) | Analytics (first-party) | Links page views within a single visit into one interaction recording | 1 day |
Activation: Only with your consent. Rejecting them does not affect your use of the website.
Google Analytics (GA4): Analytics provided by Google Ireland Limited. For more information, see the Google Privacy Policy.
Microsoft Clarity: A Microsoft tool for analysing website use — heatmaps and interaction recordings (clicks, scrolling, movement on the page) that help us improve the website. It only loads if you consent to analytics cookies. For more information, see the Microsoft Privacy Statement.
Essential vs. analytics cookies
| Aspect | Essential cookies | Analytics cookies |
|---|---|---|
| Consent | Not required | Required |
| Purpose | Website operation | Understanding and improvement |
| Can be rejected | No, they are required | Yes, at any time |
| Effect of rejecting | Essential cookies cannot be switched off because they provide the basic functions of the website and store your settings. | Rejecting them does not affect your use of the website. |
How can you manage cookies?
You are in full control of cookies. You can:
- Accept analytics cookies.
- Reject analytics cookies and use the website with essential cookies only.
- Adjust your analytics cookie settings to suit your preferences.
- Change or withdraw your consent at any time via “Cookie Settings”.
Managing cookies in your browser
You can also manage, block or delete cookies directly in your browser settings. The exact steps depend on your browser and device. Deleting cookies may also remove your saved preferences. Official browser help pages:
Changing or withdrawing consent
You can change or withdraw your cookie consent at any time:
The button opens the cookie settings panel, where you can change your choice and save new settings.
More information
If you have any questions about cookies or the protection of your personal data, please see our Privacy Policy.
This cookie policy was last updated in October 2026. We reserve the right to make changes. Any changes will be published on this page.