Powerful Developer Tools. Simple. Fast. Free.
DevUtilityLab is your streamlined toolbox for everyday development tasks. Format JSON, debug JWTs, test regex patterns, and more—instantly and securely in your browser.
No sign-up, no tracking of your input, and nothing is stored on our servers.
⚡ Explore Developer Tools
🧾 Data & Formatting
Format, transform, and validate structured data instantly.
🧾 JSON Formatter
Format, validate, and beautify JSON instantly.
🗄️ SQL Formatter
Turn messy SQL into clean, readable queries.
🔄 JSON → YAML
Convert JSON into readable YAML instantly.
📊 CSV → JSON
Convert CSV files into structured JSON.
⚙️ XML → JSON
Convert XML data into JSON instantly.
🧠 JSON → C#
Generate C# classes from JSON automatically.
🔐 Encoding & Security
Encode, decode, and inspect secure developer data.
📡 API & Debugging
Debug APIs, inspect responses, and test patterns.
📡 API Response Viewer
Format and inspect API responses instantly.
🔍 Regex Tester
Test and debug regex with live matching.
🌐 CURL Generator
Generate curl commands instantly for API requests, headers, and request bodies.
🛰️ HTTP Request Builder
Send and test HTTP API requests instantly with custom headers, JSON bodies, and live responses.
📘 API Documentation Generator
Generate professional API documentation, Swagger schemas, and OpenAPI references instantly from JSON responses.
📊 SQL & Database
Debug APIs, inspect responses, and test patterns.
Frequently Asked Questions
Clear answers to common questions about DevUtilityLab and how we handle your data.
Are DevUtilityLab tools really free to use?
Yes. All tools on DevUtilityLab are free to use for individuals and teams. You can bookmark specific tools and use them as often as you like without creating an account.
Do you store or log the data I paste into a tool?
No. All processing happens in your browser using client-side JavaScript. We do not transmit, store, or log the contents you paste into any tool.
Can I use DevUtilityLab at work or in commercial projects?
Yes. You are free to use DevUtilityLab as part of your commercial workflows, internal tooling, or client work, provided you respect any third-party libraries’ licenses referenced on the site.
Are the tools secure enough for sensitive data?
Because everything runs locally in your browser and we do not persist input, DevUtilityLab is suitable for many development and debugging scenarios. However, you should still avoid using any online tool with highly confidential or regulated data.
Do you use analytics or cookies?
We may use lightweight, privacy-conscious analytics in the future to understand high-level usage patterns. These analytics will not capture the actual contents you process with the tools. See our Privacy Policy for details.
Will you add more tools?
Yes. DevUtilityLab is designed to grow over time. We plan to add more debugging, encoding, and formatting utilities based on feedback from the developer community.