The utilities on this site are built as JavaScript that runs on your own device. Text you type, files you drop in, and the results they produce are usually processed locally. Choosing a file does not upload it to Savvy Goose.
Some tools put short inputs and settings in the page URL so you can share the result. Anyone with that link can read those values. Opening a shared link also sends its URL to the web server as part of the normal page request, so do not put passwords, private tokens, or other sensitive data in a share link.
There's no sign-up and no user database. The site doesn't set advertising or cross-site tracking cookies. A standard session cookie may be used for basic site function, nothing more.
A couple of tools genuinely need a network request to do their job:
The hosting platform and application monitoring may process standard request information such as your IP address, requested URL, browser headers, timing, and error data. It is used to operate and debug the site, not to build advertising profiles.
If anything here is unclear, get in touch. The site is open source, so you can also read exactly what it does on GitHub.