Beautify, minify and validate JSON

Match results and replace preview

Decode JWT header / payload and check expiry (no signature verification)

Parse 5-field cron expressions and compute the next 5 run times (Beijing time)

Generate UUID v4 and secure random passwords in bulk

Parse UA strings to identify browser, OS and device type

Convert between JSON and XML formats

Convert JSON to/from an escaped string literal (quotes and newlines)

Recursively compare two JSON documents, ignoring object key order, listing added / removed / changed entries

Generate Go / Java / Python entity classes from JSON, with nested objects and arrays

Beautify or minify SQL with keyword case and indent options

Beautify or minify XML with indent options

Convert units of length, weight, temperature, area, volume and data storage

Enter text or a link to generate a downloadable QR code

View your public IP address and request headers

Convert between YAML, JSON and TOML formats

Convert a docker run command into docker-compose.yml

Convert between numeric modes and rwx symbolic permissions

Supports non-ASCII characters like Chinese

Percent-encode and decode URLs, Unicode friendly

Convert between binary, octal, decimal and hexadecimal

Convert between HEX, RGB and HSL color formats

Convert text to and from \uXXXX escape sequences

Convert between text and hexadecimal (UTF-8), supports Chinese

Escape and unescape HTML special characters like < > & quotes

Convert between text and ASCII codes in decimal, hex and binary

Convert between text and Morse code; supports letters, digits and common punctuation

Convert between Simplified, Traditional, Taiwan and Hong Kong Chinese

Line-by-line comparison of two texts with highlights

Render Markdown to HTML with live preview

Character, word, line counts and character frequency

Convert between camelCase / PascalCase / snake_case / kebab-case / UPPER_SNAKE

Dedupe, sort, remove empty lines, trim, reverse

Convert Chinese characters to Pinyin: with tones, without tones, or initials

Convert between full-width and half-width characters: letters, digits, punctuation and spaces

Convert a numeric amount to Chinese RMB uppercase, e.g. 1234.56 → 壹仟贰佰叁拾肆元伍角陆分

Generate placeholder text as paragraphs, sentences or words

Unix timestamp to date and back (auto sec/ms)

Calculate the difference between two dates, or add/subtract days, weeks and months

Current time in major cities around the world

MD5 / SHA-1 / SHA-256 / SHA-512 text hashes

Evaluate password strength, estimate crack time and get improvement tips

AES-256-CBC text encryption and decryption

Generate an HMAC signature for text with a secret key

Parse PEM-encoded SSL/TLS certificates and view validity and details