Validate, format, and inspect JSON. Returns structured data with keys, types, and pretty-printed output.
Generate hashes using MD5, SHA-1, SHA-256, SHA-384, or SHA-512. Returns hex output + all algorithms.
Preview HTML rendering. Returns rendered HTML or wrapped snippet.
Convert between HEX, RGB, and HSL color formats.
Parse and explain cron expressions. Get field breakdowns and next run estimates.
Compare two texts and get structured diff output with line-level additions/removals.
Base64 Encode/Decode
GETPOST
Encode or decode Base64 text. Returns both encoded and decoded output.
URL Encoder/Decoder
GETPOST
Encode or decode URL components with proper percent-encoding.
Generate random UUID v4 identifiers. Batch up to 100 at once.
Count tokens, words, characters, and estimate reading time for any text.
Extractive text summarization using frequency scoring. Returns top N most relevant sentences.
Convert text between upper, lower, title, sentence, camelCase, snake_case, kebab-case, and PascalCase.
Convert numbers between binary, octal, decimal, hex, and any custom base.
Convert between units of length, mass, volume, and temperature. Returns all conversions.
Generate cryptographically secure random passwords with configurable character sets.
Generate lorem ipsum placeholder text. Configurable paragraphs and words.
API Key Management
GETPOST
Create, list, and revoke API keys. POST /create, GET /keys?email=, POST /revoke.
Check if a domain is disposable, suspicious, or free email provider. Includes risk scoring.
Deduplicate and validate email or phone number lists. Returns cleaned list and invalid entries.
Convert between Unix timestamps and human-readable dates. Get current time or convert any value.
Calculate exact age from birthdate — years, months, days, and days until next birthday.
Get the ISO 8601 week number, day of year, and days in year for any date.
Generate random numbers, strings, UUIDs, bytes, or booleans. Uses Web Crypto for true randomness.
Generate time-sortable UUID v7 identifiers. Unlike UUID v4, these encode the timestamp for chronological ordering.
Generate compact, URL-safe unique IDs in the NanoID format. Customizable length and alphabet.
Math Expression Evaluator
GET
Safely evaluate arithmetic expressions. Supports +, -, *, /, %, ^, parentheses, and functions like sqrt(), abs(), sin(), cos().
Convert text into URL-friendly slugs. Handles Unicode normalization, custom separators, and length limits.
Analyze text for word count, sentence count, readability, vocabulary density, and character composition.
Encode or decode HTML entities (&, <, >, ", ') for safe HTML rendering.
Escape or unescape Unicode characters in text (\uXXXX format).
Calculate the Levenshtein edit distance and similarity ratio between two strings.
Encode or decode data using RFC 4648 Base32 encoding.
Encode or decode data using Bitcoin-style Base58 encoding (no look-alike characters).
Calculate network address, broadcast address, subnet mask, and host ranges for any IPv4 CIDR range.
Validate IPv4 and IPv6 addresses. Detects private, reserved, and multicast ranges.
Expand a CIDR block into its individual IP addresses. Shows network address and total address count.
HTTP Status Code Lookup
GET
Look up HTTP status codes by number — get name, class, and description for any code.
Look up MIME types by file extension, or get the complete list of 60+ supported types.
Look up common port numbers — get service name, protocol, and description.
Create signed JWT tokens with a JSON payload using HS256 (HMAC-SHA256).
Convert between TOML and JSON formats. Parse TOML config files or generate TOML from JSON.
Convert between INI and JSON formats. Parse INI config files or generate INI from JSON.
Environment (.env) Utility
GET
Parse .env files into structured JSON, validate variable names, or generate .env from JSON.
Generate production-ready Dockerfiles for Node.js, Python, Go, Rust, Deno, or static sites.
Generate .gitignore templates for common languages and frameworks.
Generate open-source license text for MIT, Apache 2.0, GPLv3, BSD 2/3-Clause, or Unlicense.