Developer
Practical formatting, decoding, debugging, and AI code helper utilities.
12 free tools · No sign-up required
Free Developer Tools — Format, Debug, Decode, Explain
Essential developer utilities that run in your browser. Format and validate JSON with syntax highlighting, test regex patterns with real-time matching, beautify code in any language, and decode Base64 strings or JWT tokens instantly.
Compare code blocks with our diff checker, format SQL queries, preview Markdown, convert curl commands to Python or JavaScript code, and use AI to explain complex code snippets. Built for developers who need fast, no-friction tools.
JSON Formatter and Validator
Format, lint, and validate JSON with clean error surfacing.
Regex Tester
Test patterns against sample text with instant match feedback.
Code Formatter
Format pasted code across common languages for readability.
Base64 Encoder Decoder
Encode and decode strings or payloads quickly.
JWT Decoder
Decode JWT headers and payloads for debugging and inspection.
API Response Viewer
Inspect nested API payloads with readable JSON structure.
SQL Formatter
Format messy SQL into readable query blocks.
Markdown Previewer
Preview markdown structure and render output side by side.
Diff Checker
Compare two blocks of text or code and highlight changes.
AI Code Explainer
Explain what code does, what to watch for, and how to improve it.
Code Optimizer
Suggest performance and readability improvements for pasted code.
Curl to Code Converter
Convert curl requests into client code samples in common languages.
Frequently Asked Questions
Are all Developer tools on aiBytes free?
Yes. All 12 developer tools are completely free to use with no sign-up, no watermarks, and no usage limits.
What developer tools does aiBytes offer?
aiBytes offers 12 free developer tools including JSON Formatter and Validator, Regex Tester, Code Formatter, Base64 Encoder Decoder, JWT Decoder, and more. Browse the full list above.
Is my data safe when using these tools?
Absolutely. Files and text are processed in real time and never stored. Your data is discarded immediately after producing results.
Can I use these tools on my phone?
Yes. All developer tools are fully responsive and work in any modern browser on desktop, tablet, and mobile.