Security & Developer
Generate passwords, encode/decode data, format JSON, and test regex.
Password generation, encoding and decoding data, formatting JSON, and testing regular expressions are everyday developer tasks that are simple individually but tedious without the right tool on hand. Having them run entirely client-side matters here specifically — pasting an API token or sensitive data into a formatter shouldn't mean sending it to a server first.
Password Generator & Checker
Generate strong passwords and check strength
Password Generator
Generate strong, secure random passwords
Base64 Encode / Decode
Encode or decode Base64 strings
JSON / YAML Formatter
Format, validate, and beautify JSON & YAML
Regex Tester
Test and debug regular expressions
URL Encoder / Decoder
Encode or decode URLs and query strings
Hash Generator
Generate MD5, SHA-1, SHA-256 hashes
JWT Decoder
Decode and inspect JSON Web Tokens
UUID Generator
Generate random UUIDs and unique keys
Diff Checker
Compare two blocks of text or code and highlight differences
Binary / Hex / ASCII Converter
Convert text between binary, hexadecimal, and decimal ASCII codes
Unix Timestamp Converter
Convert between Unix timestamps and human-readable dates
Cron Expression Builder
Build and understand cron expressions in plain English
HTTP Status Code Reference
Look up what any HTTP status code means
HTML Entity Encoder / Decoder
Encode or decode HTML entities like & and < in text
CSS & JS Minifier
Minify CSS and JavaScript to reduce file size
User-Agent Parser
Parse a user-agent string into browser, OS, and device info
SQL Formatter
Format and indent SQL queries for PostgreSQL, MySQL, SQL Server, Oracle, BigQuery and more
cURL Converter
Convert cURL commands to JavaScript fetch or Python requests code
Subnet Calculator
Work out network, broadcast, usable range and masks for any IPv4 subnet, and split into smaller subnets
Chmod Calculator
Convert Unix file permissions between checkboxes, octal and rwx text and copy the chmod command
String Escape / Unescape
Escape or unescape text for JSON, JavaScript, Python, HTML, URL, CSV, regex, SQL and shell