Free Developer Tools

Generate UUIDs, hashes, cron expressions, and more.

• UUID/GUID Generator Generate random UUIDs v1 and v4
• Hash Generator MD5, SHA-1, SHA-256, SHA-512
• Cron Expression Generator Build and validate cron schedules
• Cron to Human Readable Translate cron expressions to plain English

Validate and format JSON, XML, and more.

• JSON Formatter & Validator Format, validate, and minify JSON
• XML Formatter Format and validate XML documents
• Regex Validator Test patterns with live matching

Encode and decode Base64, URL, HTML entities.

• Base64 Encoder/Decoder Encode and decode Base64 strings
• URL Encoder/Decoder Percent-encode URLs
• HTML Entity Encoder Encode special characters

IP lookup, subnet calculator, DNS, and network tools.

• IP Subnet Calculator Calculate CIDR and subnet masks
• What Is My IP Detect your public IP address
• IP Geolocation Lookup Find IP address location
• DNS Lookup Query DNS records
• MAC Address Lookup Find vendor from MAC
• WHOIS Lookup Query domain registration
• Ping & Traceroute Network connectivity test

Regex library, explainer, and pattern generator.

• Regex Pattern Library Common regex patterns ready to use
• Regex Explainer Understand regex in plain English
• Regex Generator Generate patterns for common uses
• Regex Tester Test patterns with live matching

Unix timestamps, timezones, and date converters.

• Unix Timestamp Converter Convert epoch time to date
• Timezone Converter Convert between timezones
• UTC/Local Converter Convert UTC to local time
• ISO 8601 Formatter Format dates to ISO standard

Format, beautify, and minify code.

• SQL Formatter Beautify SQL queries
• HTML/CSS/JS Minifier Compress code for production

Convert between data formats.

• YAML/JSON Converter Convert YAML to JSON and back
• CSV/JSON Converter Convert CSV to JSON and back