How We Use Cookies.
This page explains what cookies are, which cookies Olarev Notebook uses, why we use them, and how you can control your cookie preferences.
Last updated: 16 July 2026
2. How We Use Cookies
Olarev Notebook uses cookies for three categories of purpose:
- —Essential operation — cookies required for the website to function correctly. These cannot be disabled.
- —Analytics — cookies that collect anonymised data on how visitors use the site, used to improve the editorial experience. These are only set where you have provided consent.
- —Preferences — cookies that remember your choices, such as your cookie consent decision. These are set when you interact with the cookie banner.
We do not use advertising cookies, retargeting cookies, or any cookies associated with commercial profiling.
3. Essential Cookies
Essential cookies are strictly necessary for the website to operate. They do not require your consent. Without these cookies, features such as form submission and page navigation may not work correctly.
Examples of essential cookies set by this website:
- Session cookies that maintain form state during contact form submission
- Security tokens used to prevent cross-site request forgery (CSRF) on interactive elements
- Cookies that store your cookie consent decision (so we do not ask repeatedly)
4. Analytics Cookies
Where you have provided consent, Olarev Notebook uses analytics cookies to collect anonymised information about how visitors use the publication. This data is used to understand which articles attract reader interest, how visitors navigate between pages, and how the overall reading experience can be improved.
Analytics data is collected in aggregate and anonymised form. IP addresses are anonymised before any data is transmitted to the analytics provider. Analytics cookies do not identify individual visitors.
You can withdraw consent to analytics cookies at any time by selecting "Essential Only" in the Cookie Settings panel (linked in the footer).
5. Preference Cookies
Preference cookies store information about choices you have made on the website — most notably, the cookie preferences you selected when you interacted with our cookie consent banner. These cookies allow us to honour your preferences on subsequent visits.
Preference cookies are session-linked and are set only after you interact with the cookie banner. They do not store any personal data beyond your expressed cookie preferences.
6. Third-Party Cookies
Olarev Notebook may load resources from third-party services to deliver certain website functionality. Where these services set cookies, they are governed by the privacy policies of the respective third parties. The third-party services currently used on this website include:
Google Fonts
Font resources loaded from Google's CDN. Google may set session cookies as part of font delivery. These cookies are subject to Google's Privacy Policy.
jsDelivr CDN
JavaScript and CSS libraries loaded from jsDelivr's CDN. jsDelivr may set performance cookies. These are subject to jsDelivr's Privacy Policy.
We do not use third-party advertising networks or tracking pixels on this website.
7. Managing Your Cookie Preferences
You have several options for managing cookies on Olarev Notebook:
Cookie Settings Panel
Click "Cookie Settings" in the footer of any page to open the cookie preferences panel. You can accept all cookies, accept selected categories, or restrict cookies to essential cookies only.
Browser Settings
Most browsers allow you to block or delete cookies through their settings. Instructions vary by browser — refer to your browser's help documentation. Note that blocking all cookies may affect the functionality of this website.
Opt-Out Tools
For analytics services, you may also use browser opt-out tools provided by the relevant service provider. Details are available in their respective privacy policies.
8. Cookie Reference Table
The following table lists the cookies set by Olarev Notebook and their purpose:
| Name | Category | Duration | Purpose |
|---|---|---|---|
| olarev_consent | Essential | 12 months | Stores your cookie consent preferences |
| PHPSESSID | Essential | Session | PHP session management for form security |
| _ga | Analytics | 2 years | Distinguishes unique visitors (anonymised) |
| _ga_* | Analytics | 2 years | Maintains analytics session state (anonymised) |
| _gid | Analytics | 24 hours | Distinguishes visitors across sessions (anonymised) |
Analytics cookies (prefixed _ga) are only set where you have provided consent. Essential cookies are set on all visits.
9. Changes to This Policy
We may update this Cookie Policy when we change the cookies we use or in response to changes in applicable law. The date at the top of this page records when the policy was last revised. We encourage visitors to review this page periodically.
10. Contact
If you have any questions about our use of cookies, please contact the editorial team: