Developer Tools That
Never Touch Your Data

Format, validate, and minify JSON locally

Format SQL with HANA, Oracle, MySQL, PostgreSQL support

Live GFM Markdown editor with real-time preview

Minify and beautify CSS with size comparison

Format, minify, and validate YAML with indentation control

Format and minify XML with proper indentation

Convert Unix timestamps to human-readable dates

Convert curl commands to JavaScript, Python, Go

Convert between HEX, RGB, HSL color formats

Convert between YAML and JSON formats

Generate TypeScript interfaces from JSON data

Convert between binary, octal, decimal, and hex

Convert between camelCase, snake_case, kebab-case, and more

Convert between TOML and JSON formats

Convert and resize images — PNG, JPG, WebP (Canvas API)

Convert case only inside quotes — perfect for code refactoring

Convert between CSV and JSON formats — bidirectional

Convert data, time, length, weight, temperature, area, volume, speed, pressure — 100+ units

See a single moment in time across Seoul, Tokyo, NY, LA, London, Berlin and more — DST-aware

Encode and decode Base64 strings and files

Encode and decode URLs and query strings

Encode and decode HTML entities

Escape and unescape JSON strings — quotes, newlines, special chars

Decode and inspect JSON Web Tokens

Decode PEM certificates — subject, issuer, expiry

Generate UUID v4 and v7 with crypto-safe randomness

Build and explain cron expressions with next run preview

Generate placeholder text — words, sentences, paragraphs

Generate QR codes locally — download as SVG

Visual Markdown table editor with CSV import

Generate Nginx configuration with visual builder

Test regular expressions with live matching

Compare two texts and highlight differences

Evaluate JSONPath expressions with live results

Parse, validate, and compare .env files

Validate docker-compose.yml — ports, deps, structure

Sort, deduplicate, reverse, shuffle, trim, number lines

Reverse, measure, repeat, extract URLs/emails, clean whitespace

Calculate IP subnet ranges, masks, and host counts

Visual Unix permission calculator — numeric and symbolic

Count words, characters, sentences, paragraphs, reading time

Generate MD5, SHA-1, SHA-256, SHA-512 hashes

Generate strong passwords with crypto-safe randomness

Detect and mask PII — emails, phones, IPs, cards, SSN