dev-tool-x is a free, browser-based toolkit for everyday developer work — format, convert, inspect, encode, and compare data without leaving your browser.
Why it exists
Common developer chores — formatting JSON, converting between YAML and TOML, encoding Base64, escaping HTML — shouldn't require five different browser tabs. dev-tool-x keeps them in one place: paste your data, get your result, move on.
Privacy by default
All transformations run directly in your browser. Nothing you paste or upload is sent to a server. No account required, no usage limits.