How jeppesen.dev uses cookies and similar technologies. Last updated 3 November 2026.
Who we are
This site is run by Lucas B. Jeppesen (Jeppesen studio), based in Madrid, Spain. For any question about this policy or your data, write to lucas@jeppesen.dev.
What we use and why
We use PostHog (EU cloud, data stored in the European Union) to understand how the site and its free tools are used: which pages people visit, which buttons they click and how they move between pages. We use this only to improve the site. We don't sell it, use it for advertising or combine it with other data.
We never send what you type into the tools' text fields to analytics.
Your choice
If you accept, PostHog stores an anonymous identifier in a cookie and in your browser's storage, so it can recognise repeat visits and link the pages you see in one visit.
If you decline, or until you choose, nothing is stored on your device. We still count visits in a cookieless, anonymous way: PostHog combines technical details of the request (such as IP address and browser) into a one-way hash on its servers, which changes daily and can't be turned back into those details.
You can change your choice at any time:.
Cookies and storage
Name
Purpose
Type
Duration
__ph_opt_in_out_*
Remembers whether you accepted or declined, so we don't ask again. Necessary.
Local storage
Until you clear it
ph_*_posthog
Anonymous visitor and session identifier for analytics. Only if you accept.
Cookie and local storage
1 year
jeppesen_visit
Remembers the first page of your visit (for example, a tool) so analytics can tell where visits start. Only if you accept.
Session storage
Until you close the tab
Other sites
"Book a call" opens Cal.com, and some links go to LinkedIn or the websites in our examples directory. Those sites have their own cookie and privacy policies.
We use cookies to understand how people use this site and its tools, so we can make them better. Cookie policy
