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Developer Tools That Just Work

Format JSON, run SQL queries, write Java, format Python — all free, all instant, all in your browser.

All 📋 JSON 1 💻 Code 21 📝 Text 5 🗄️ Data 16 ⚡ Generator 5 📄 Diff Checker 2 📄 Devops 2 🍃 Spring Boot 11 🐍 Python 4
ESC
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String Escape & Unescape

Escape or unescape strings for JSON, Java, JavaScript, URL, HTML, XML, Unicode \u and Base64 — live, in your browser.

Text 90 uses
STR
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String Utils

Case converter, find & replace, trim, sort lines, deduplicate, slugify, padding and character stats — all client-side.

Text 52 uses
S̶
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Strikethrough Text Generator

Generate strikethrough, underline, slash, double-strike, and decorative Unicode text for Facebook, Twitter/X, Instagram, LinkedIn, and more.

Text 54 uses
RE
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Regex Tester

Live match highlighting, capture groups, and a replace preview — JavaScript regex flavor, entirely in your browser.

Text 56 uses
MD
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Markdown ↔ HTML

Convert Markdown to HTML or HTML to Markdown with a live rendered preview — client-side, powered by marked and Turndown.

Text 56 uses