Developer Tools
JSON, regex, SQL, API testing, and code conversion utilities
Category Overview
These utilities are designed for debugging, formatting, testing, and validating small chunks of developer workflow quickly.
This category includes 7 tools designed for fast, browser-based workflows. Start with one task-specific tool, then use related tools in this category to compare output quality and assumptions.
Start With These Tools
JSON Formatter & Validator
Format, validate, and beautify JSON data online. Minify JSON or pretty-print with custom indentation.
Base64 Encode/Decode
Encode text to Base64 or decode Base64 strings instantly. Free online Base64 converter.
Timestamp Converter
Convert Unix timestamps to human-readable dates and vice versa. Support for seconds and milliseconds.
JSON Formatter & Validator
Format, validate, and beautify JSON data online. Minify JSON or pretty-print with custom indentation.
Base64 Encode/Decode
Encode text to Base64 or decode Base64 strings instantly. Free online Base64 converter.
Timestamp Converter
Convert Unix timestamps to human-readable dates and vice versa. Support for seconds and milliseconds.
Regex Tester
Test and debug regular expressions in real-time with match highlighting, capture groups, and common regex patterns.
REST API Tester
Test REST API endpoints with GET, POST, PUT, DELETE methods. View response headers, status, and body.
SQL Formatter
Format and beautify SQL queries with proper indentation and keyword highlighting. Supports common SQL dialects.
Code Converter
Convert code between formats: HTML to JSX, CSS to Tailwind classes, JSON to TypeScript interfaces, and more.
Explore Related Categories
Need a fast start? Try JSON Formatter & Validator first, then compare with other tools from this category.
What You'll Find Here
These utilities are designed for debugging, formatting, testing, and validating small chunks of developer workflow quickly.
This category currently includes 7 browser-based tools, including JSON Formatter & Validator, Base64 Encode/Decode, and Timestamp Converter. Each page is designed to explain the job clearly, surface the important inputs, and help you get to a result quickly.
Common Use Cases
- Open the tool that matches one clear job instead of using an all-purpose app.
- Review the example and notes on the page before you copy a result elsewhere.
- Use related tools to compare scenarios when the result affects a real decision.
Why This Category Is Useful
Every tool in this category is intended to be lightweight, understandable, and usable without an account. You can move from question to answer quickly, then open related tools if you want to compare outcomes.