About FreeJavaDevTools (DevToolkit)
DevToolkit is a free online developer utilities website focused on practical Java and backend workflows. It includes tools for JSON to Java conversion, JWT decoding, SQL formatting, regex testing, cron building, UUID generation, Liquibase changelog generation, and JPA entity generation.
Our goal is simple: reduce repetitive coding tasks and speed up day-to-day development.
DevToolkit is maintained by Ravi Kaluarachchi. Contact: [email protected]
What the site is for
- Convert common payloads and text formats into code-friendly output.
- Inspect tokens, generate IDs, and format SQL without leaving the browser.
- Provide supporting articles and docs for users who need more than a single tool page.
Editorial approach
- Tool pages explain the input format, output, and limitations.
- Blog posts focus on practical workflows and safe usage.
- Content is maintained to stay aligned with the live application.