Privacy & analytics

Last updated 2026-06-23

Engineering Vault is a free, ad-free learning site. It uses privacy-respecting analytics to understand which content is useful and what to improve — nothing more.

What is collected

The site uses Google Analytics 4 (measurement ID G-5VXHVXESPR) to record aggregate, non-identifying usage:

• Pages viewed and basic interactions (search, filters, starting a track, answering a quiz, opening interview questions, theme toggles, outbound clicks).
• Approximate location (country/region), device type, browser, and referrer — as derived by Google Analytics.

No names, emails, accounts, or other personal identifiers are collected — the site has no login and no forms. Reading progress (which lesson you're on) is stored only in your browser's localStorage and never leaves your device.

Consent & cookies

Analytics runs under Google Consent Mode v2, and analytics cookies are optional and off by default. On your first visit a small banner asks whether to enable them; until you choose Accept analytics, analytics_storage stays denied and no analytics cookie (e.g. _ga) is set — Google Analytics receives only cookieless, aggregate pings. Choosing Reject keeps it that way. Advertising signals are always denied — the site sets no advertising cookies and runs no ad, remarketing, or personalization tags.

How to change your choice

• Pick Accept analytics or Reject on the consent banner. Your choice is stored in your browser (localStorage, key sd:consent) and the banner won't show again.
• To be asked again, clear this site's site data / localStorage in your browser, then reload.
• You can also use your browser's tracking protection or Google's Analytics opt-out add-on — the site works fully without analytics.
• Analytics never runs on non-production hosts (local development).

Manage analytics on this device

Checking your current choice…

Enable analytics Disable analytics

Your choice is stored only in this browser (localStorage, key sd:consent) and takes effect immediately — no account, no server-side record.

Data sharing & retention

Aggregated analytics data is processed by Google under its privacy policy. It is used only to improve Engineering Vault and is not sold or shared with third parties.

Questions

Open an issue on GitHub.