Last updated: 1 July 2026
Cookies are small text files stored on your device (computer, tablet, mobile phone) when you visit websites. In addition to cookies, we use similar browser storage technologies (in particular localStorage), to which the same rules apply. This policy describes what we actually store and which tools actually run on the site.
2.1. Necessary. Technologies required for the site to function — in particular for signing in and maintaining your session, and for storing your cookie choice. They cannot be switched off; the site would not work without them. They are used under the exemption for technically necessary storage (Section 89(3) of Act No. 127/2005 Coll.).
2.2. Error diagnostics. We use the Sentry tool to monitor technical errors in the application. The basic error record (error type, technical context, browser type) is processed on the basis of our legitimate interest in the stability and security of the application and is not used to track your behaviour. Extended diagnostic features that record the course of your visit (session replay, performance measurement) run only with your consent.
2.3. Analytics and marketing. We currently use no analytics or marketing cookies on the site — neither Google Analytics nor any other analytics or advertising tool runs here. If we introduce such a tool in the future, it will be activated only after your prior consent and this policy will be updated in advance.
| Name | Type | Category | Purpose | Duration |
|---|---|---|---|---|
| Supabase authentication cookies (sb- prefix) | cookie | Necessary | Keeping the user signed in | 7 days |
| nalekci-cookie-consent | localStorage | Necessary | Storing your cookie choice | until you change it or clear your browser data |
Error diagnostics (Sentry) stores no cookies on your device.
On your first visit, a banner is shown where you can accept or reject the optional categories. Rejecting means the optional features do not start and no data is transferred within them.
You can change or withdraw your choice at any time via the "Cookie settings" link in the site footer. Withdrawing consent also ends any ongoing recording; data lawfully processed before the withdrawal is not affected.
You can also manage cookies directly in your browser:
Please note that blocking necessary cookies may prevent signing in and parts of the site from working.
Data processed during error diagnostics may be processed by the Sentry provider outside the European Economic Area as well; the safeguards are described in the Privacy Policy. No other third parties obtain data through cookies on our site.
We update this cookie policy whenever the tools actually used or their purposes change. We will inform you of significant changes through our website, and in such a case the banner will ask for your choice again.
If you have any questions about the use of cookies at NaLekci.cz, please contact us:
© 2026 NaLekci.cz. All rights reserved.