Developer tools, text utilities, encoders, formatters, and more
Quick reference for all HTTP response status codes
0–255 in decimal, hex, binary, octal, and ASCII
Convert between HEX, RGB, HSL color formats
Format, validate, and minify JSON data
Test regular expressions with live matching
Generate SHA-1, SHA-256, SHA-512 hashes
Encode and decode Base64 strings
Encode and decode URL components
Generate placeholder text
Generate random UUIDs (v4)
Generate secure random passwords
Count characters, words, lines, and more
Calculate Unix file permissions
Convert CSV data to JSON format
Convert between px, rem, and em units
Encode/decode HTML entities
Write Markdown and see live preview
Compare two texts and see differences
Build and explain cron schedule expressions
Subnet calculator and IP address info
Convert epoch timestamps to dates
Convert between binary and text
Ratios, equivalent resolutions, megapixels