This notice covers the Mercury documentation website at mercury.jonnify.com. The maintainer and privacy contact is Jonny Novikov, reachable at mercury@jonnify.com. It describes the website's implemented data handling; applications you build with Mercury may have different behavior and need their own notice.
Requests and analytics
Serving a page involves its address, request method, response status and request duration. When visitor analytics is enabled and the configured tracking decision permits it, page events can also include the client IP address, user-agent, referring page, device classification, country, and visitor/session identifiers. These events support site analytics and research. A raw Cookie header is not included in the page event. Hosting and delivery services process network requests to serve the site.
Cookies and preferences
Choosing light or dark mode sets the first-party theme cookie for up to one year. When visitor tracking is enabled for a request, _ms_vid identifies a visitor for up to two years and _ms_sid identifies a session for thirty minutes of inactivity. These cookies use HttpOnly and SameSite=Lax; tracking cookies use Secure on HTTPS. Their browser expiry is not a statement about server-side record retention.
You can remove or block this site's cookies using your browser settings. The analytics layer also honors _ma_optout=1. For assistance with tracking preferences or retained records, contact the maintainer. A fixed server-side analytics retention period is not published here; ask about the records relevant to your request rather than assuming cookie expiry deletes them.
External resources
Documentation pages load DM Sans from Google Fonts. The interactive browser example loads versioned Mercury JavaScript and CSS from UNPKG. Visiting these pages can send those providers your network address and browser request headers. Links to GitHub open a separate service. Review the relevant provider's privacy information when using those resources.
Contact about your data
Email mercury@jonnify.com to ask about this notice, request information about retained visit data, or request correction or deletion. Include the relevant page and approximate visit time so the request can be investigated; do not send passwords, access tokens or identity documents in the initial message. See Contact Mercury for reporting guidance.