Privacy policy
Last updated 9 November 2026
What we collect
The calculators run entirely in your browser. Values you type are kept in the page address (so you can bookmark or share a result) and are not sent to us. Files you open in the STL analyzer are read locally by your browser and are never uploaded.
Analytics
We may use Google Analytics 4 or Plausible to count visits, pages viewed and the country they came from. Where Google Analytics is used, IP anonymisation is enabled. This helps us see which tools are useful.
Advertising
We show ads served by Google AdSense. Google and its partners may use cookies or similar identifiers to show ads based on your prior visits to this and other websites. You can opt out of personalised advertising at Google Ads Settings and learn how Google uses data at policies.google.com. Visitors in the EEA, UK and Switzerland are shown a consent message before any personalised ads load.
Cookies
Apart from advertising and analytics cookies described above, the site sets no cookies. Your theme preference, if you set one, is stored in your browser's local storage.
Your rights
Depending on where you live you may have rights to access, correct or delete personal data. Because we hold no account data, requests usually concern analytics or advertising providers; contact manumanohar1527@gmail.com and we will help.
Changes
If this policy changes materially we will update the date above.