Cookie Policy
Understanding how we use cookies and similar technologies
Last updated: 01 October 2025
We use only essential cookies and very limited, privacy-friendly analytics. We do not use advertising cookies or third-party trackers, and we do not sell or share your data.
- What are cookies?
- Cookies we use
- Your choices
- Retention
- Third-party cookies
- Managing cookies
- Contact
1. What are cookies?
Cookies are small text files that are placed on your device (computer, smartphone, or tablet) when you visit a website. They are widely used to make websites work more efficiently and provide information to the owners of the site.
Similar technologies include local storage, session storage, and pixels. At Tressia Labs S.L., we use these technologies solely to operate our site securely and to measure basic usage in a privacy-respecting manner.
2. Cookies we use
We use the following types of cookies on our website:
Essential Cookies (Required)
These cookies are necessary for the website to function properly. They enable core functionality such as security, network management, and accessibility. Without these cookies, the site cannot function properly.
- Session management: Maintains your session state as you navigate the site
- Security: Protects against cross-site request forgery and other attacks
- Cookie consent: Remembers your cookie preferences
Analytics Cookies (Optional)
These cookies help us understand how visitors interact with our website by collecting and reporting information anonymously. We use privacy-respecting, first-party analytics only.
- Page views: Tracks which pages are visited
- Referrers: Understands how visitors find our site
- Device type: Aggregated information about device and browser types
- Privacy protection: IP addresses are truncated or anonymised. No cross-site tracking.
3. Your choices
You have full control over optional cookies. You can accept or reject non-essential cookies via the consent banner that appears when you first visit our site. You can also change your preferences at any time:
- Consent banner: When you first visit, you can choose to accept or reject analytics cookies
- Browser settings: You can configure your browser to block or delete cookies
- Update preferences: You can change your cookie settings at any time using the link below
Note: Essential cookies cannot be disabled as they are necessary for the website to function. Blocking them may affect your ability to use certain features of the site.
4. Retention
Different cookies have different retention periods:
| Cookie Type | Retention Period |
|---|---|
| Essential cookies | Session or up to 12 months |
| Cookie consent preference | Up to 12 months |
| Analytics events | Aggregated data retained up to 13 months |
5. Third-party cookies
We do not use third-party advertising cookies or tracking technologies. Any third-party services we use (such as content delivery networks) are configured to respect your privacy and do not track you across websites.
If we integrate third-party services in the future, we will update this policy and request your consent where required by law.
6. Managing cookies
Most web browsers allow you to control cookies through their settings. You can:
- View which cookies are stored and delete them individually
- Block all cookies from specific websites
- Block all third-party cookies
- Delete all cookies when you close your browser
Please note that deleting or blocking cookies may impact your experience on our website and limit the functionality available to you.
For more information about managing cookies in your browser, please visit your browser’s help documentation or visit www.allaboutcookies.org.
7. Contact
If you have any questions about our use of cookies or this Cookie Policy, please contact us:
Email: privacy@tressialabs.com
Address: Rosello 37, 08024 Barcelona, Spain
For more information about how we handle your personal data, please see our Privacy Policy.