Toolzami is a collection of free online tools for everyday data work: formatters, validators and converters for JSON, XML and SQL, helpers for AI and MCP setups, and checkers for SEO tags. Every tool runs in your web browser, and none of them needs an account.
How the tools work
When you open a tool, your browser downloads the page and its code. After that, everything you type, paste or open is processed by that code on your device; larger documents are parsed in a background thread so the page stays responsive. Your input is not sent to Toolzami. The site's servers only deliver its pages and files.
That is why a tool behaves the same whether you paste a public sample or something confidential, such as a configuration file or an access token. The Privacy Policy lists the little that is processed when you visit the site.
How we check the results
Each tool is built on a small engine with its own tests. The examples in a tool's guide are produced by that engine and checked again on every build, so a guide cannot show output the tool would not give you.
Converters never change your data silently. Numbers keep the digits you wrote, and anything that cannot be converted without loss is reported instead of dropped. Tools that estimate rather than calculate, such as cost or token counts for some models, label their results as estimates and show when their data was last checked.
Accessibility
The tools can be used with a keyboard and a screen reader, adapt to light and dark mode, and fit small screens. Guides and examples are plain HTML, so they can be read even with JavaScript turned off. If something does not work for you, please tell us.
Contact
For questions, bug reports and ideas for new tools, write to support@toolzami.com. Please do not send the data you were working on unless we ask for a specific example.
To report a security vulnerability, write to security@toolzami.com. Our security.txt file has the details.