1. What Are Cookies?

Cookies are small text files placed on your device when you visit a website. They allow the site to remember information about your visit, making it work correctly and more efficiently. We also use localStorage (browser storage) to save your privacy preferences — this is not a cookie but works similarly.

2. Cookies We Use

2.1 Essential Cookies — Always Active

These cookies are strictly necessary for the site to function. They cannot be disabled without breaking core functionality. No consent is required for essential cookies under GDPR Recital 47.

Cookie Name	Provider	Purpose	Duration
session	DomainValueEstimator.com	Maintains your login state, bulk analysis credits, and form state (Flask session). Essential for authentication and service delivery.	Session (deleted when browser closes)
csrf_token	DomainValueEstimator.com	Cross-Site Request Forgery protection — prevents malicious form submissions. Required for all forms.	Session

2.2 Analytics Cookies — Consent Required

These cookies help us understand how visitors use the site so we can improve it. They are only activated after you give your consent via our cookie banner or the "Your Privacy Choices" link. Under GDPR and LGPD, these require explicit opt-in.

Cookie Name	Provider	Purpose	Duration
_ga	Google Analytics 4 (G-2VVGN37BB7)	Distinguishes unique users by assigning a randomly generated number. Used to calculate visitor, session, and campaign data. IP addresses are anonymized (IP truncation enabled).	2 years
_ga_*	Google Analytics 4	Persists session state (GA4 session ID). Used to maintain session across page views.	2 years
_gid	Google Analytics 4	Distinguishes users. Stores and updates a unique value for each page visited.	24 hours

2.3 Preference Storage (localStorage) — No Consent Required

Key Name	Purpose	Duration
dve_privacy_prefs	Stores your cookie consent choices (analytics on/off, sharing on/off). Stays on your device so we do not ask for consent every visit.	Persistent (until cleared)
dve_cookie_consent	Records whether you have seen and acted on the cookie consent banner (accepted or declined analytics).	1 year

3. Google Analytics — Details and Opt-Out

We use Google Analytics 4 (GA4), operated by Google LLC, 1600 Amphitheatre Parkway, Mountain View, CA 94043, USA. GA4 collects data about how users interact with our site, which pages are viewed, how long users stay, and what country/region they are from (based on IP address, which is truncated before storage).

Google processes this data under the EU–US Data Privacy Framework and Standard Contractual Clauses. You can review Google's privacy policy at policies.google.com/privacy.

To opt out of Google Analytics across all sites: Install the Google Analytics Opt-Out Browser Add-On. Alternatively, use the "Your Privacy Choices" link in our footer to disable analytics cookies for this site only.

4. How to Manage Cookies

Our Preference Centre

The easiest way — use the "Your Privacy Choices" link in the footer to turn analytics on or off at any time without affecting essential functionality.

Browser Settings

You can block or delete cookies in your browser settings. Note: blocking essential cookies will break login and forms.

5. Do Not Track

Some browsers send a "Do Not Track" (DNT) signal. We currently do not alter our data practices based on DNT signals because there is no consistent industry standard for them. However, you can disable analytics cookies using our Preference Centre above.

6. Changes to This Policy

We may update this Cookie Policy as we change our technology or as legal requirements evolve. Material changes will be flagged with an updated "Last updated" date and, where significant, a notice on the site.

7. Contact

For questions about our use of cookies, contact us via our Contact Form or submit a Data Subject Request.