Code Tools

16 free online tools — JSON, Base64, regex, markdown & developer utilities

Explore our collection of 16 code tools. All tools are 100% free, fast, and process data locally in your browser for maximum privacy.
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JSON Formatter

Format, validate & beautify JSON in seconds

Base64 Encode/Decode

Encode or decode Base64 instantly

URL Encode/Decode

Encode or decode URLs for web development

HTML Entities

Encode or decode HTML entities securely

CSS Minifier

Minify CSS — reduce file size dramatically

HTML Formatter

Format & beautify HTML with proper indentation

JS Minifier

Minify JavaScript — remove comments & whitespace

SQL Formatter

Format SQL queries with clean indentation

UUID Generator

Generate UUID v4 — unique identifiers in one click

Regex Tester

Test regular expressions with real-time matching

JWT Decoder

Decode JWT tokens — view header, payload & signature

Diff Checker

Compare two texts — find every difference

String Escape/Unescape

Escape or unescape strings for JSON & code

Markdown Preview

Live markdown preview with real-time rendering

Markdown to HTML

Convert markdown to clean HTML code instantly

HTML to Markdown

Convert HTML back to clean markdown format