Cookies
Cookies are small blocks of data placed on the user's electronic device when they visit a website. Cookies are used to store data about preferences and user sessions.
Pop-up banner
The information pop-up banner on cookies that is displayed when a user lands on the website generates a cookie when it is closed.
Name of cookie |
Type of cookie |
Lifetime |
Use |
cookie-close |
Functional |
100 days |
This cookie saves the user's choice so that the banner they already accepted is not displayed again. |
Language
The "lang" cookie saves the language chosen by the user
Name of cookie |
Type of cookie |
Lifetime |
Use |
lang |
Functional |
365 days |
This cookie saves the language chosen by the user |
Accessibility settings
Turning high-contrast mode on using the contrast icon generates a cookie.
Name of cookie |
Type of cookie |
Lifetime |
Use |
accessibility |
Functional |
100 days |
This cookie saves the user's choice and turns high-contrast mode on or off. |
Matomo
The statistics-tracking tool Matomo is implemented on your website and generates cookies.
It is configured to anonymise the IP addresses of visitors to the website.
It is also configured to disable the cookies. However, it can still create essential non-analytics cookies.
Name of cookie |
Type of cookie |
Lifetime |
Use |
vdl_defaut |
Functional |
At the end of the session |
- |
mtm_consent_removed |
Functional |
13 months |
Makes it possible to ignore Matomo audience measurement |
Dynatrace
Dynatrace is a server-side software application that is designed to analyse performance and detect vulnerabilities.
Name of cookie |
Type of cookie |
Lifetime |
Use |
dtPC |
Functional |
At the end of the session |
Required to identify proper endpoints for beacon transmission; includes session ID for correlation. |
rxvt |
Functional |
At the end of the session |
Specifies the session timeout. |
dtCookie |
Functional |
At the end of the session |
Tracks a visit across multiple requests. |
dtLatC |
Functional |
At the end of the session |
Measures server latency for performance monitoring. |
dtSa |
Functional |
At the end of the session |
Serves as an intermediate storage for page-spanning actions. |
rxVisitor |
Functional |
At the end of the session |
Contains the visitor ID to correlate sessions. |
F5
F5 is the reverse proxy of the City of Luxembourg website.
F5 installs cookies that prevent attackers from changing the content of other cookies that have been defined. This makes the service more secure and protects your personal data.
Name of cookie |
Type of cookie |
Lifetime |
Use |
TS01e5a589 |
Functional |
At the end of the session |
Protects your session against hijacking. |
Form server
The form-server.vdl.lu website uses the following cookies:
Name of cookie |
Type of cookie |
Lifetime |
Use |
JSESSIONID |
Functional |
At the end of the session |
Used to ensure that the server continues monitoring the user's session |
Dynatrace
See the table in the Dynatrace section.
F5
Name of cookie |
Type of cookie |
Lifetime |
Use |
TS017b811f |
Functional |
At the end of the session |
Protects your session against hijacking. |
f5avrbbbbbbbbbbbbbbbb |
Functional |
At the end of the session |
Technical cookie for this service. |
maps.vdl.lu
The maps.vdl.lu website uses the following cookies:
Name of cookie |
Domain |
Type of cookie |
Lifetime |
Use |
TS |
.maps.vdl.lu |
Functional |
Session |
Security cookie used to validate cookies |
Cookie_maps.vdl.lu |
Maps.vdl.lu |
Functional |
Session |
Ensures that web requests are always processed by the same server in our infrastructure for the entire duration of your session |
vdl_default |
3d.vdl.lu |
Functional |
Session |
Ensures that web requests are always processed by the same server in our infrastructure for the entire duration of your session |
JSESSIONID |
3d.vdl.lu |
Functional |
Session |
Used to ensure that the server continues monitoring the user's session |
_pk_id |
Maps.vdl.lu |
Performance |
1 year |
Used to store some user information, such as their unique visitor ID |
_pk_ref |
Maps.vdl.lu |
Performance |
6 months |
Used to store allocation data the referrer used initially to visit the website |
_pk_ses, _pk_cvar, _pk_hsr |
Maps.vdl.lu |
Performance |
30 minutes |
Used to store data temporarily for the duration of the visit |
_pk_testcookie |
Maps.vdl.lu |
Performance |
Session |
Used to check whether the visitor's browser supports cookies |
mtm_consent |
Maps.vdl.lu |
Performance |
Permanent |
Used to remember that the user has consented to the use of cookies |
dtLatC |
.vdl.lu |
Performance |
Session |
Manages the availability and performance of software applications, and the impact on user experience, through deep transaction tracing, synthetic monitoring, real user monitoring and network monitoring |
dtPC |
.vdl.lu |
Performance |
Session |
|
dtCookie |
.vdl.lu |
Session |
||
dtSa |
.vdl.lu |
Performance |
Session |
This cookie is used to save user action names across pages in order to be able to monitor performance across pages |
rxVisitor |
.vdl.lu |
Functional |
Session |
Used to store an anonymous identifier for each user in order to correlate sessions on the global service |
rxvt |
.vdl.lu |
Performance |
Session |
Used to store two timestamps in order to determine the duration and end of a session |
citybiblio.lu;
The citybiblio.lu website uses the following cookies:
Name of cookie |
Domain |
Type of cookie |
Lifetime |
Use |
CookieConsent |
Functional |
1 year |
Stores the user's permission to use cookies for the current domain |
|
TS# |
Essential |
Session |
Used to ensure website security and fraud detection. |
|
TS# | piwik.vdl.lu | Essential | Session | Used to ensure website security and fraud detection. |
_pk_id# | citybiblio.lu | Analytics | 1 year | Collects statistics on user visits to the website, such as number of visits, average time spent on the site and which pages were viewed. |
_pk_ses# | citybiblio.lu | Analytics | 0 days | Used by Piwik Analytics Platform to track visitor page requests during a session. |
datastore | citybiblio.lu | Functional | Persistant | Used to store application preferences at the browser level. Not used for tracking. |
PHPSESSID | citybiblio.lu | Functional | Session | Used for login with A-Z.lu |
Other websites
onsstad.vdl.lu does not use cookies.
The cityapp does not use cookies.
Our websites also contain share buttons for social media platforms where the City has accounts, as well as videos posted on our YouTube channel. According to the information published by the social media platforms in question, these share buttons and videos may also install cookies. To learn more about how this works, please visit the websites of the social media platforms in question.
Cookies
Cookie Policy
Effective Date: 26-May-2025
Last Updated: 26-May-2025
What are cookies?
This Cookie Policy explains what cookies are and how we use them, the types of cookies we use i.e, the information we collect using cookies and how that information is used, and how to manage the cookie settings.
Cookies are small text files that are used to store small pieces of information. They are stored on your device when the website is loaded on your browser. These cookies help us make the website function properly, make it more secure, provide better user experience, and understand how the website performs and to analyze what works and where it needs improvement.
How do we use cookies?
As most of the online services, our website uses first-party and third-party cookies for several purposes. First-party cookies are mostly necessary for the website to function the right way, and they do not collect any of your personally identifiable data.
The third-party cookies used on our website are mainly for understanding how the website performs, how you interact with our website, keeping our services secure, providing advertisements that are relevant to you, and all in all providing you with a better and improved user experience and help speed up your future interactions with our website.
Types of Cookies we use
Manage cookie preferences
Cookie SettingsYou can change your cookie preferences any time by clicking the above button. This will let you revisit the cookie consent banner and change your preferences or withdraw your consent right away.
In addition to this, different browsers provide different methods to block and delete cookies used by websites. You can change the settings of your browser to block/delete the cookies. Listed below are the links to the support documents on how to manage and delete cookies from the major web browsers.
Chrome: https://support.google.com/accounts/answer/32050
Safari: https://support.apple.com/en-in/guide/safari/sfri11471/mac
Internet Explorer: https://support.microsoft.com/en-us/topic/how-to-delete-cookie-files-in-internet-explorer-bca9446f-d873-78de-77ba-d42645fa52fc
If you are using any other web browser, please visit your browser's official support documents.