Developer Tools
86+ free tools for developers. Fast, private, runs in your browser.
Crypto
Encryption, hashing, and security tools
Token Generator
Generate random tokens and secure strings
Hash Text
Hash text with MD5, SHA1, SHA256, SHA512
Bcrypt
Hash and verify passwords with bcrypt
UUID Generator
Generate UUIDs v1, v4, and v5
ULID Generator
Generate sortable unique identifiers
Encryption
Encrypt and decrypt text with AES, DES
BIP39 Generator
Generate BIP39 mnemonic seed phrases
HMAC Generator
Generate HMAC authentication codes
RSA Key Pair Generator
Generate RSA public/private key pairs
Password Strength
Analyze password strength and security
PDF Signature Checker
Verify digital signatures in PDF files
Converter
Convert between different formats and encodings
Date-Time Converter
Convert dates between formats and timezones
Base Converter
Convert numbers between bases (binary, hex, decimal)
Roman Numeral Converter
Convert between Roman numerals and Arabic numbers
Base64 String Converter
Encode and decode Base64 strings
Base64 File Converter
Convert files to and from Base64
Color Converter
Convert colors between HEX, RGB, HSL
Case Converter
Convert text case (camelCase, snake_case, etc.)
NATO Alphabet
Convert text to NATO phonetic alphabet
Text to Binary
Convert text to binary representation
Text to Unicode
Show Unicode code points for text
YAML to JSON
Convert YAML to JSON format
YAML to TOML
Convert YAML to TOML format
JSON to YAML
Convert JSON to YAML format
JSON to TOML
Convert JSON to TOML format
TOML to JSON
Convert TOML to JSON format
TOML to YAML
Convert TOML to YAML format
XML to JSON
Convert XML to JSON format
JSON to XML
Convert JSON to XML format
List Converter
Convert between list formats (comma, newline, etc.)
Web
Web development and HTTP utilities
URL Encoder
Encode and decode URLs
HTML Entities
Encode and decode HTML entities
URL Parser
Parse and analyze URL components
Device Information
View browser and device details
Basic Auth Generator
Generate HTTP Basic Authentication headers
Meta Tag Generator
Generate HTML meta tags for SEO
OTP Generator
Generate TOTP/HOTP codes for 2FA
MIME Types
Look up MIME types by file extension
JWT Parser
Decode and inspect JWT tokens
Keycode Info
Find JavaScript keyboard keycodes
Slugify String
Convert text to URL-friendly slugs
HTML WYSIWYG Editor
Visual HTML editor with live preview
User Agent Parser
Parse and analyze user agent strings
HTTP Status Codes
HTTP status code reference guide
JSON Diff
Compare two JSON documents
Safelink Decoder
Decode Microsoft SafeLinks URLs
Development
Developer productivity tools
Git Cheatsheet
Common Git commands reference
Random Port Generator
Generate random available port numbers
Crontab Generator
Build cron schedule expressions
JSON Formatter
Format and validate JSON
JSON Minifier
Minify JSON by removing whitespace
JSON to CSV
Convert JSON arrays to CSV format
SQL Formatter
Format and beautify SQL queries
Chmod Calculator
Calculate Unix file permissions
Docker Run to Compose
Convert docker run to docker-compose.yml
XML Formatter
Format and beautify XML documents
YAML Formatter
Format and validate YAML
Email Normalizer
Normalize and validate email addresses
Regex Tester
Test regular expressions with sample text
Regex Cheatsheet
Regular expression syntax reference
Network
IP addresses, subnets, and network utilities
IPv4 Subnet Calculator
Calculate subnet masks and IP ranges
IPv4 Address Converter
Convert IPv4 between formats
IPv4 Range Expander
Expand CIDR ranges to IP lists
MAC Address Lookup
Find vendor by MAC address
MAC Address Generator
Generate random MAC addresses
IPv6 ULA Generator
Generate IPv6 Unique Local Addresses
Math
Mathematical calculations and evaluations
Measurement
Time, temperature, and measurement tools
Text
Text manipulation and generation
Lorem Ipsum Generator
Generate placeholder text
Text Statistics
Analyze text with word and character counts
Emoji Picker
Browse and copy emojis
String Obfuscator
Obfuscate and hide text
Text Diff
Compare two text documents
Numeronym Generator
Create numeronyms like i18n, a11y
ASCII Art Generator
Create ASCII art text
Invisible Text Detector
Detect and remove invisible Unicode characters from text
Images
Image generation and QR codes
Data
Data validation and parsing
Powered by Dublyo.