Your tool inputs stay in your browser.

Smile Tools is built as a static website. Measurements entered into the body calculators and text pasted into the JSON tools are processed locally by JavaScript in your current browser session; the application does not send those values to a Smile Tools data-processing server.

What the site serves

The hosting provider delivers the HTML, CSS, JavaScript, images, and other files needed to open the website. Like most web hosting, infrastructure may process standard request information such as an IP address, browser type, requested path, and timestamp for security and operational logs.

No account required

The current tools do not require an account, and the site does not ask for a name, email address, or payment information. Avoid pasting secrets into any online tool unless you understand and accept the environment in which it runs.

Questions and corrections

This notice describes the current open-source application. Review the implementation on GitHub or open an issue to report a privacy concern.

Last updated: August 20, 2026.