Privacy
The short version: the calculator runs entirely in your browser, and nothing you draw or type is ever sent anywhere.
Last updated: 2026-08-22
What the site does not do
It sets no cookies and uses no local storage for tracking.
It runs no analytics, advertising, or third-party scripts. The pages load no external resources at all — fonts are system fonts and every file is served from this domain.
It has no accounts, no registration, and no contact forms.
Every calculation — shapes, coordinates, holes, results — happens locally in your browser. That data never leaves your device and never reaches the server.
What the server records
Like any web server, it writes an access log. Each entry contains the time of the request, the page requested, the HTTP status, the size of the response, the referring page, and the browser user-agent string.
The IP address is anonymised before it is written: the last group is replaced with zero (for example 203.0.113.42 is stored as 203.0.113.0). The full address is never saved to disk.
These entries exist to keep the site running — spotting errors, abuse and automated traffic — and to count roughly how many people visit. They are kept for 14 days and then deleted automatically by log rotation.
No error or diagnostic log is kept. A web server writes the visitor’s full IP address into such logs and offers no way to anonymise it, so for this site they are discarded instead of stored.
The log is not linked to any other data set, is not shared with anyone, and never leaves the server.
Where the data is
The site is hosted on a server in Moscow, Russia. Nothing is transferred outside the country.
Your rights
Because IP addresses are anonymised at the moment of writing and there are no accounts, the operator holds no data that can be traced back to you, and so cannot look up, export or delete an individual record.
If you still have a question about how this site handles data, write to the address below and it will be answered.
Operator
This site is run by a private individual, not a company. Contact for any privacy question:
Changes
If this policy changes, the new version is published on this page and the date above is updated.