Developer Tools
Essential utilities for programmers, formatters, validators, and code generators.
Available Tools (12)
All tools in Developer Tools are 100% free and web-based
UUID / GUID v4 Generator
Generate RFC-compliant Version-4 UUIDs (Universally Unique Identifiers) in bulk.
Regex Tester & Debugger
Test and debug regular expressions with real-time match highlighting, groups, and flags support.
Cron Expression Generator & Explainer
Build and explain cron job schedule expressions with a visual UI — no memorizing syntax required.
JWT Token Decoder & Inspector
Decode and inspect JSON Web Tokens (JWT) — view header, payload claims, and expiry status.
IP Address Lookup & Geolocation
Look up any IP address to find its country, city, ISP, timezone, latitude, and longitude.
SQL Formatter & Beautifier
Format, beautify, and clean up messy SQL queries with customizable indentation and keyword casing (UPPERCASE / lowercase).
YAML to JSON Converter
Convert YAML configuration files to JSON data format and vice-versa instantly with real-time syntax validation.
Cron Expression Generator & Explainer
Build, parse, and translate complex 5-part and 6-part cron expressions into plain human-readable sentences with schedule previews.
cURL to Code Converter
Convert raw cURL command line requests into clean JavaScript fetch, Node.js, Python requests, Go, or PHP code snippets.
HTML Entity Encoder & Decoder
Safely encode special characters (&, <, >, ", ') to HTML entities and decode encoded string payloads to prevent XSS vulnerabilities.
CSV to JSON Converter
Convert CSV spreadsheets or Excel exports into clean JSON array objects or key-value structures.
Regex Pattern Generator & Tester
Instant regex pattern generator and tester for email validation, phone numbers, URLs, credit cards, IP addresses, and dates.