Developer
Utilities for coding and web development.
Utilities for people who build websites, apps and AI tools. Tidy up JSON, SQL, HTML, CSS and JavaScript, convert CSV, YAML and XML to and from JSON, or test a regular expression before you use it. For AI work there is a token counter with cost estimates and a text splitter, plus meta tag and schema generators for SEO.
Token Counter
Estimate tokens and AI API costs for GPT, Claude and Gemini.
JSON Diff
Compare two JSON objects and find differences.
CSV ↔ JSON Converter
Convert between CSV and JSON formats instantly.
Regex Tester
Test regular expressions with real-time matching.
SEO Meta Tag Generator
Generate meta tags for search engines and social media.
Schema Markup Generator
Generate JSON-LD structured data for rich snippets.
Prompt Template Generator
Create reusable AI prompt templates with variables.
JWT Decoder
Decode and inspect JSON Web Tokens instantly.
Markdown to HTML
Convert Markdown to HTML with live preview.
Text Splitter
Split text into chunks for RAG and AI embeddings.
JSON Formatter
Prettify and validate JSON data.
Base64 Encoder/Decoder
Encode and decode Base64 strings.
URL Encoder/Decoder
Encode and decode URLs and query strings.
HTML Entity Encoder
Encode special characters for HTML.
HTTP Status Code Reference
Interactive HTTP status code lookup.
MIME Type Lookup
Find MIME types for file extensions.
YAML ↔ JSON Converter
Convert between YAML and JSON formats.
XML ↔ JSON Converter
Convert between XML and JSON formats.
HTML Formatter
Prettify and minify HTML code.
CSS Formatter
Prettify and minify CSS code.
JavaScript Formatter
Prettify and minify JavaScript code.
SQL Formatter
Format SQL queries for readability.
Unicode Converter
Turn text to Unicode and Unicode to text.
Environment Variable Parser
Parse and convert .env files.
Git Command Generator
Build git commands with a visual UI.
Cron Expression Builder
Build cron schedules visually.
Binary / Decimal / Hex Converter
Convert between binary, decimal, and hexadecimal instantly.