SQL Formatter
Format SQL queries with dialect-aware indentation, keyword casing, and spacing options.
Developer
Help developers inspect, format, validate, and reason about technical inputs without interrupting their workflow.
Markdown Preview
Write Markdown and preview the rendered HTML side by side as you type.
Cron Expression Tool
Explain cron expressions in plain English, preview upcoming runs, and generate Unix, seconds, or Quartz cron schedules.
JSON Formatter
Beautify, minify, validate, and sort JSON in your browser.
Base64 Decode and Encode
Decode Base64 into text and encode text back to Base64 instantly in your browser.
HTTP Security Headers Checker
Check a website's HTTP security headers, redirect chain, and common browser protection settings.
HTTP Status Sandbox
Create mock endpoints that return configurable HTTP status codes for testing client behavior.
Developer tools are for the small technical transformations that interrupt deeper work: formatting JSON or SQL, previewing Markdown, decoding Base64, reading cron schedules, or checking HTTP security headers. They are designed to be fast enough to use without changing context.
Software engineers, support teams, technical writers, and product teams use these utilities when they need to inspect or reshape data safely. Many of the tools run in the browser, which makes them useful for snippets, examples, and debugging notes you do not want to paste into a remote service.
Choose formatters when the input is valid but hard to read, validators and checkers when you need to diagnose a problem, and converters when the same value needs to move between representations.