Cookie Policy
Last updated: May 31, 2026
This Cookie Policy explains how VertexLensCalc (vertexlenscalc.com) uses cookies and similar tracking technologies when you visit our Website. By continuing to use the Website, you consent to the use of cookies as described in this policy.
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, to remember your preferences, and to provide information to site operators about how their site is being used.
Cookies can be:
- Session cookies: Temporary cookies that are deleted when you close your browser.
- Persistent cookies: Cookies that remain on your device for a set period of time or until you delete them manually.
- First-party cookies: Set directly by VertexLensCalc.
- Third-party cookies: Set by third-party services we use (such as Google).
2. Cookies We Use
a) Strictly Necessary Cookies
These cookies are essential for the Website to function properly. They do not collect personal information and cannot be disabled. They are typically set in response to actions you make, such as setting your preferences.
| Cookie Name | Purpose | Duration |
|---|---|---|
| wordpress_* | WordPress session management | Session |
| wp-settings-* | Stores user interface customization preferences | 1 year |
b) Analytics Cookies
We use analytics cookies to understand how visitors interact with our Website. This information is collected and reported in aggregate, anonymous form and helps us improve the Website’s content and performance.
| Cookie Name | Provider | Purpose | Duration |
|---|---|---|---|
| _ga | Google Analytics | Distinguishes unique users | 2 years |
| _gid | Google Analytics | Distinguishes users (short-term) | 24 hours |
| _gat | Google Analytics | Throttles request rate | 1 minute |
c) Advertising Cookies
We use Google AdSense to display advertisements on our Website. Google AdSense places advertising cookies to serve you relevant ads based on your browsing activity on our site and across the web.
| Cookie Name | Provider | Purpose | Duration |
|---|---|---|---|
| IDE | Google DoubleClick | Used for targeted advertising | 1 year |
| DSID | Identifies a signed-in user for ad targeting | 2 weeks | |
| test_cookie | Google DoubleClick | Checks if browser supports cookies | 15 minutes |
3. How to Control Cookies
You have the right to accept or reject cookies. You can control cookies in the following ways:
Browser Settings
Most web browsers allow you to manage cookie settings through their options or preferences menus. You can set your browser to refuse cookies, delete existing cookies, or notify you before accepting a cookie. Please note that disabling certain cookies may affect the functionality of this Website.
Guidance for managing cookies in popular browsers:
Opt Out of Google Advertising Cookies
You can opt out of Google’s use of cookies for advertising purposes by visiting Google’s Ads Settings. Alternatively, you can opt out of third-party vendor cookies by visiting the Network Advertising Initiative opt-out page.
4. Changes to This Cookie Policy
We may update this Cookie Policy from time to time to reflect changes in technology, legislation, or the cookies we use. When we do, we will update the “Last updated” date at the top of this page. We encourage you to review this policy periodically.
5. Contact Us
If you have any questions about our use of cookies, please contact us:
- Email: contact@vertexlenscalc.com