Playground Sunshine ☀️
Fast, free, privacy-friendly tools for developers. Everything runs in your browser.
Formatters
JSON Formatter
Format, validate, and minify JSON directly in your browser.
YAML Formatter
Validate and format YAML with consistent 2-space indentation directly in your browser.
.env Formatter
Format, convert, and compare .env files. Export to JSON, Docker Compose, or GitHub Actions YAML. Generate .env.example in one click.
SQL Formatter
Beautify SQL queries with consistent indentation and keyword casing. Supports MySQL, PostgreSQL, SQLite, and T-SQL.
Markdown Previewer
Preview Markdown as formatted HTML in real time. Copy the rendered HTML or raw Markdown — runs entirely in your browser.
Encoders & Decoders
HTML Entity Encoder / Decoder
Encode special characters to HTML entities or decode them back to plain text — directly in your browser.
Number Base Converter
Convert numbers between binary, octal, decimal, and hexadecimal in real time — directly in your browser.
Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 back to plain text directly in your browser.
URL Encoder / Decoder
Encode or decode percent-encoded URLs directly in your browser.
JWT Decoder
Decode a JWT token and inspect its header and payload without sending it anywhere.
Generators
UUID / NanoID Generator
Generate UUID v4 and NanoID values instantly in your browser.
Password Generator
Generate strong, random passwords with configurable length and character sets — using your browser’s secure crypto API.
Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text or files directly in your browser.
Fake Data Generator
Generate realistic fake names, emails, addresses, and more for mocks and tests — directly in your browser.
QR Code Generator
Turn any text or URL into a scannable QR code. Download as PNG — runs entirely in your browser.
Date & Time
Text & Code
Regex Tester
Test regular expressions against sample text and visualise matches in your browser.
Text Diff Checker
Compare two blocks of text and see the differences highlighted line by line. Works with code, JSON, SQL, Markdown, or any plain text.
String Case Converter
Convert text between camelCase, PascalCase, snake_case, kebab-case, SCREAMING_SNAKE_CASE, and Title Case instantly.
Word & Character Counter
Count words, characters, sentences, paragraphs, and reading time for any block of text — live as you type.
CSV ↔ JSON Converter
Convert CSV to JSON or JSON to CSV directly in your browser. Handles quoted fields, commas inside values, and complex structures.