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11 Tools · Always Free · No Signup

Programming Tools –
Format, Validate & Convert

Essential code formatting, validation, and conversion tools for developers. JSON, XML, CSS, SQL, YAML, Regex and more — all free, all instant, no account needed.

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Category Overview

Total Tools11

Most PopularJSON Formatter

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🔧 JSON 📄 XML 🎨 CSS 🗄️ SQL 📋 YAML 🔍 Regex ⚡ JS ✍️ MD

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11 programming tools

🔥 Most Popular

Format, validate, and beautify JSON data instantly. Supports minify, tree view, and syntax highlighting with error detection.

Format Validate Minify

Programming Open Tool

XML Formatter & Validator

Parse, validate, and pretty-print XML documents. Detect syntax errors with line-by-line error reporting and tree visualization.

Format Validate Parse

Programming Open Tool

CSS Minifier & Beautifier

Minify CSS to reduce file size or beautify compressed CSS for readability. Removes comments, whitespace and redundant code.

Minify Beautify Compress

Programming Open Tool

Format and beautify SQL queries with proper indentation and keyword casing. Supports MySQL, PostgreSQL, SQLite, and MSSQL dialects.

Format MySQL PostgreSQL

Programming Open Tool

YAML Validator & Formatter

Validate YAML syntax, detect indentation errors, and format YAML documents. Convert YAML to JSON and vice versa instantly.

Validate Format Convert

Programming Open Tool

Regex Tester & Debugger

Test and debug regular expressions in real-time with match highlighting, group capture, and plain-English pattern explanation.

Test Match Debug

Programming Open Tool

HTML Beautifier & Minifier

Beautify messy HTML with proper indentation and formatting, or minify HTML to reduce page size. Syntax highlighting included.

Format Minify Validate

Programming Open Tool

JavaScript Minifier

Minify JavaScript code to reduce file size for faster page loads. Removes whitespace, comments, and shortens variable names.

Minify Compress Optimize

Programming Open Tool

Markdown Previewer

Write Markdown and see a live HTML preview. Supports tables, code blocks, task lists, and full GitHub Flavored Markdown (GFM).

Preview GFM Live

Programming Open Tool

JSON ↔ CSV Converter

Convert JSON arrays to CSV format or parse CSV data into JSON. Supports nested objects, custom delimiters, and one-click download.

Convert JSON CSV

Programming Open Tool

Cron Expression Parser

Parse and explain cron expressions in plain English. See the next 10 scheduled run times and validate your cron syntax before deploying.

Cron Schedule Parse

Programming Open Tool

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Built for Real Developers

Every programming tool is fast, accurate, and privacy-friendly — with client-side processing for your sensitive code.

Instant Results

Client-side processing means results appear as you type — no server round-trips, pure speed.

Your Code Stays Private

For client-side tools, your code never leaves your browser. No logging, no tracking, no storage.

Precise Error Detection

Detailed messages with line numbers and suggestions — not just "invalid" but exactly what and where.

One-Click Copy

Every tool output has a copy-to-clipboard button. No manual selection — just grab and go.

11 Programming Tools · Always Free

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