Developer Tools

Essential online developer tools to format, validate, and convert code. JSON formatter, SQL beautifier, Base64 encoder, and more.

Tools in Developer Tools

• JSON Formatter & Validator — Format, validate, and minify JSON data
• JSON ↔ CSV Converter — Convert between JSON and CSV formats
• Base64 Encode / Decode — Encode and decode Base64 strings
• URL Encode / Decode — Encode and decode URL components
• JWT Decoder — Decode and inspect JSON Web Tokens
• Regex Tester — Test regular expressions with live matching
• SQL Formatter — Format and beautify SQL queries
• YAML ↔ JSON Converter — Convert between YAML and JSON formats
• Unix Timestamp Converter — Convert between Unix timestamps and dates
• UUID Generator — Generate random UUIDs (v4)
• Cron Expression Parser — Parse and explain cron expressions
• HTML Formatter & Minifier — Format or minify HTML code
• CSS Formatter & Minifier — Format or minify CSS code
• JavaScript Formatter & Minifier — Format or minify JavaScript code
• XML Formatter & Minifier — Format or minify XML documents
• HTML Entity Encoder / Decoder — Encode and decode HTML entities
• .gitignore Generator — Generate .gitignore files for any language or framework
• JSON to TypeScript — Generate TypeScript interfaces from JSON data
• TOML ↔ JSON Converter — Convert between TOML and JSON formats
• CSV Viewer & Editor — View, edit, and export CSV files as tables
• JSON Schema Generator — Generate JSON Schema from sample JSON data
• Markdown ↔ HTML Converter — Convert Markdown to HTML and HTML to Markdown
• cURL to Code Converter — Convert cURL commands to fetch, axios, Python, Go, and PHP code
• HTML/CSS/JS Playground — Live-preview HTML, CSS, and JavaScript in a sandboxed iframe
• Regex Visualizer — Visualize and explain regular expression components in plain English
• Markdown Table Generator — Build Markdown tables visually and copy the syntax instantly
• Subnet / CIDR Calculator — Calculate network address, broadcast, hosts, and mask from CIDR notation
• DNS Lookup — Look up A, AAAA, MX, NS, TXT records for any domain
• Website Ping & Response Time — Measures browser round-trip time to a target's edge (not server latency — CORS hides response details)
• IP Address Lookup — Look up geo, ISP, and ASN info for any IP address