Cookie Policy
Last updated: 13 November 2026
- This website sets no cookies of its own and uses no analytics, advertising or tracking.
- Two preferences (language and light / dark theme) are saved in your browser’s local storage. They never leave your device.
- Cloudflare, which delivers the site, may set a strictly necessary security cookie when it needs to tell people from bots.
Because we use nothing that requires consent, there is no cookie banner.
1. What cookies and local storage are
Cookies are small text files a website asks your browser to keep. Local storage is a similar place in your browser where a page can save small settings. Both stay on your device; local storage is not sent to the server with each request.
2. On this website
| Name | Type | Set by | Purpose | Kept for |
|---|---|---|---|---|
onviz-site-lang |
Local storage | onViz | Remembers English or Vietnamese | Until you clear it |
onviz-site-theme |
Local storage | onViz | Remembers light or dark theme | Until you clear it |
__cf_bm, cf_clearance |
Cookie (strictly necessary) | Cloudflare | Only set when Cloudflare checks for bots or attacks, to protect the site | 30 minutes (__cf_bm), up to 1 year (cf_clearance) |
Fonts, scripts and images are served from this website itself, so no third-party content provider can set cookies on your visit. If we ever add analytics or other optional cookies, we will update this page and ask for your consent first.
3. In the onViz app
The desktop app and the server you run yourself use a few cookies and browser storage entries, all kept on your computer and never sent to us:
| Name | Purpose |
|---|---|
onviz_session |
Keeps the app window signed in to its local server (HttpOnly, SameSite=Strict) |
onviz-theme, onviz.lang and other onviz.* entries |
Interface preferences: theme, language, font size, the getting-started guide and similar choices |
| Remote viewing session cookie | When remote viewing is on, keeps a colleague signed in after entering your password (30 days, HttpOnly) |
4. Your choices
You can clear or block cookies and local storage in your browser settings. The site still works without them; it just forgets your language and theme. Blocking Cloudflare’s security cookies may make it show a check page more often.
5. More information
See the Privacy Policy for how we handle personal data. Questions: [email protected].