Last updated: August 28, 2026
This page lists every cookie, browser-storage key, and third-party embed this site and our products use. It is written from the code, not from a template: each row below was verified by reading this repository and by checking what a real page load requests.
Nothing outside the “strictly necessary” category loads until you allow it. Your choice is stored in your own browser and applies across welzin.ai, the Bootcamp, and Startin.
Consent categories
| Category | What it covers | Default |
|---|---|---|
| Strictly necessary | Sign-in and the bootcamp state your browser keeps on your own device. The site cannot work without these, so there is nothing to switch off | Always on |
| Analytics | Vercel Analytics and Vercel Speed Insights | Off until you allow it |
| Embedded content | The Calendly booking widget on /contact and YouTube players on the WOSS pages | Off until you allow it |
Cookies
| Name | Provider | Purpose | Lifetime | Category |
|---|---|---|---|---|
sb-<project-ref>-auth-token | Supabase, first-party on the welzin.ai origin | Keeps you signed in across the site and our products. Set only after you deliberately sign in with a magic link | The session and refresh-token lifetime set in our Supabase project | Strictly necessary |
wz-consent | First-party, set by this site | Records the choice you made here so the same answer applies on the Bootcamp and Startin zones and we do not ask again | 6 months | Strictly necessary |
A visitor who is not signed in and has not answered the banner receives no cookies at all from us.
Browser storage
These are local-storage keys, not cookies. They are written by your browser, stay on your device, and are never transmitted to us.
| Key | Where | Purpose | Category |
|---|---|---|---|
welzin.consent.v1 | Every zone | The cookie choice you made on this page or in the banner | Strictly necessary |
welzin-bootcamp.progress.v2, welzin-bootcamp.quiz.v1, welzin-bootcamp.last-visited.v1, welzin-bootcamp.cert.v1 | Welzin Bootcamp | Chapters marked complete, quiz answers and pass state, where you left off, and the id of a certificate you have claimed | Strictly necessary (the feature itself) |
welzin-bootcamp.learner-name.v1 | Welzin Bootcamp | The name you type for your certificate. It is personal data, and it stays on your device unless you choose to claim a certificate, at which point the name is recorded against that certificate | Strictly necessary (the feature itself) |
Bootcamp keys live only in your browser, so clearing site data resets that progress. We hold no server-side copy of it.
Measurement and embeds
| What | Provider | Where | Storage | Category |
|---|---|---|---|---|
| Vercel Analytics | Vercel | Every page, once allowed | Cookieless. Served first-party from /_vercel/insights, so no third-party host is contacted | Analytics |
| Vercel Speed Insights | Vercel | Every page, once allowed | Cookieless. Served first-party from /_vercel/speed-insights | Analytics |
| Calendly booking widget | Calendly | /contact, once allowed | Loads a script and stylesheet from assets.calendly.com and frames calendly.com, which sets its own cookies inside that frame. Until you allow it, we show the plain booking link instead | Embedded content |
| YouTube player | /woss and /woss/cncf-timeline, once allowed | Video thumbnails are plain images from i.ytimg.com and load with the page. The player itself is a youtube-nocookie.com frame that loads only after you press play and allow embedded content | Embedded content |
There is no Google Analytics, no Tag Manager, no session-replay tool, and no advertising or cross-site tracking pixel anywhere on this site. We do not run any, and we have no plans that would add one without updating this page first.
Changing or withdrawing your choice
Use the “Cookie settings” link in the footer of any page, or the button above. Withdrawing consent takes effect immediately for anything that has not already loaded, and reloading the page clears the rest. You can also clear cookies and site data in your browser settings, which resets this question and signs you out.
How this relates to the privacy policy
The Privacy Policy is the full notice: who the controller is, the lawful basis for each purpose, how long data is kept, where it is processed, and how to exercise your rights. This page is the detail behind its cookies section.
