Test regular expressions
Regex Tester allows you to test regular expressions in real-time. Enter a regular expression and test text to see matches, capture groups, and results. Useful for developers working with validation, parsing, and text processing.
Regular expressions (regex) are a powerful tool for searching and processing text by pattern. Used for data validation, search and replace, parsing, extracting information from text. Regular expressions are supported in many programming languages and tools.
Encode and decode Base64
Decode JWT tokens
Generate hashes (MD5, SHA-1, SHA-256)
Convert text case (Upper, Lower, CamelCase, snake_case)
Compare two texts for differences
Count characters and words
Generate placeholder text
Generate secure passwords
Encode and decode URL
Generate UUID v4
Convert colors and pick colors
Convert between CSV, JSON and XML formats
Format and validate JSON, XML, CSV
Encode and decode HTML entities
Convert Unix timestamp to date and vice versa
Convert data units (bits, bytes, kilobytes, megabytes, etc.)
Convert between binary, octal, decimal, and hexadecimal number systems
Generate and parse cron expressions for task scheduling
Subnet calculator for calculating network parameters
Generate website icons in different sizes from uploaded image