Cookie Policy
Cookie Policy
This Cookie Policy provides transparent information about how SphereVolumeFormula.com uses cookies, browser local storage, and similar technologies when you visit our website (https://spherevolumeformula.com/).
Clear Transparency: We believe in minimal data footprint. Our core mathematical calculators and educational guides are fully accessible without accepting non-essential cookies. We do not use cookies to sell personal profiles to data brokers.
1. What Are Cookies and Web Storage?
A cookie is a small text file stored on your computer or mobile device by a web server when you visit a webpage. Cookies allow websites to remember your preferences and ensure security. In addition to cookies, modern browsers support HTML5 LocalStorage, which stores lightweight key-value pairs locally on your device without transmitting them across the network with every HTTP request.
2. Categories of Storage We Use
A. Strictly Necessary & Security Cookies
These cookies are essential for website security and core administrative functionality:
- Session Cookie (
PHPSESSID/svf_session_id): Used exclusively to maintain secure administrative sessions for authorized site managers and to store Cross-Site Request Forgery (CSRF) tokens that protect form submissions (such as our contact form) from automated abuse. Regular visitors reading articles or using calculators do not have persistent tracking cookies created.
B. Browser Local Storage (Non-Tracking Engagement)
To provide interactive engagement without tracking personal identities across websites, we utilize client-side LocalStorage:
liked_post_{id}: Remembers when you click the "Helpful Calculator" heart icon so the UI remains active for your browser session.rated_post_{id}: Remembers when you submit a 5-star rating on a calculator to prevent accidental repeat submissions.- Note: LocalStorage items reside solely within your browser and are never transmitted to external data brokers.
C. Analytics Cookies (Google Analytics GA4, when enabled)
When Google Analytics (GA4) is active on our site, first-party cookies are used to measure aggregated visitor traffic:
_ga: Distinguishes unique visitors on an aggregated, pseudonymous basis (typical lifespan: up to 2 years)._ga_{container-id}: Maintains session state across page requests (typical lifespan: up to 2 years).- These cookies help us understand which mathematical formulas, shapes, and converters are most in demand so we can allocate editorial development time effectively.
D. Advertising Cookies (Google AdSense, when enabled)
To fund free educational access for all users, we display non-intrusive advertisements served through Google AdSense:
- Google and certified third-party ad technology partners may place cookies on your browser to serve contextual or personalized advertisements and to prevent the same ad from showing repeatedly.
- These cookies may record your visit to our website and other websites across the Internet.
3. Summary of Cookies & Storage Technologies
| Identifier | Provider | Category | Purpose | Lifespan |
|---|---|---|---|---|
PHPSESSID |
SphereVolumeFormula.com | Essential | CSRF security protection & admin session management | Browser Session |
liked_post_* |
SphereVolumeFormula.com | LocalStorage | Remembers helpful calculator reaction locally | Persistent (Browser) |
rated_post_* |
SphereVolumeFormula.com | LocalStorage | Prevents duplicate star rating votes locally | Persistent (Browser) |
_ga |
Google Analytics | Analytics | Aggregated traffic analytics & pageview statistics | Up to 2 Years |
_ga_* |
Google Analytics | Analytics | Maintains GA4 session interaction state | Up to 2 Years |
__gads / IDE |
Google DoubleClick / AdSense | Advertising | Ad delivery, frequency capping & fraud prevention | 13 Months |
4. How to Control, Block, or Delete Cookies
You have the right to decide whether to accept or reject cookies. You can manage or delete cookies directly through your web browser settings:
- Google Chrome: Settings → Privacy and security → Third-party cookies → See all site data and permissions.
- Mozilla Firefox: Settings → Privacy & Security → Cookies and Site Data → Manage Data.
- Apple Safari: Preferences → Privacy → Manage Website Data.
- Microsoft Edge: Settings → Cookies and site permissions → Manage and delete cookies and site data.
Advertising Opt-Out Portals: You can opt out of personalized ad targeting across participating ad networks via:
- Google Ad Settings: https://myadcenter.google.com/
- Digital Advertising Alliance (US): https://optout.aboutads.info/
- European Interactive Digital Advertising Alliance (EU): https://www.youronlinechoices.eu/
5. Effects of Disabling Cookies
If you choose to block or disable cookies in your browser settings, you will still enjoy full access to all 70 interactive calculators, mathematical formulas, worked examples, and geometry guides on SphereVolumeFormula.com.
6. Updates to This Policy
We may update this Cookie Policy from time to time to reflect changes in our operational technologies or legal standards. Revisions will be published on this page with an updated timestamp.
Questions regarding our cookie practices should be directed through our Contact Us page.