The short version
It is not possible for me to collect anything you type into the tools, because none of it ever leaves your browser.
Tool data
Every tool on this site parses and computes inside your browser. The text, JSON, YAML, JWT or content you paste exists only in the memory of the current page. Reload or close the page and it is gone.
You can check this yourself: open any tool page, press F12, switch to the network panel and start typing. No request carrying your input is ever made. Or simply disconnect from the network — the tools keep working.
What does get recorded
Like almost every website, this one is hosted on Cloudflare, so Cloudflare keeps standard access logs (IP address, user agent, requested path, timestamp). That is unavoidable for serving traffic and defending against attacks, and those logs contain none of what you enter into the tools.
Local storage
The site stores exactly one item in your browser's localStorage: your theme preference (light or dark). Nothing else is written locally. There are no tracking cookies and no fingerprinting.
Third parties
No analytics scripts, advertising scripts, social widgets or external fonts are loaded. All code, styles and fonts are served from this domain directly, with one exception: the launch badge at the bottom of every page points at an image hosted by fazier.com, so loading it lets that server see the request metadata any web server sees (your IP address and user agent). It is a static image — it runs no script and receives nothing you type into the tools.
Contact
Questions about these practices are welcome through the contact link in the footer.