Developer Tools

Essential tools for web developers: format and validate JSON, minify HTML/CSS/JavaScript, encode/decode HTML entities, test regular expressions, and convert between JSON and CSV.

JSON Formatter & Validator

Format, minify, and validate JSON with syntax highlighting and error detection.

HTML Minifier

Minify HTML by removing whitespace, comments, and blank lines to reduce file size.

CSS Minifier

Minify CSS by removing comments, whitespace, and newlines for smaller file sizes.

JavaScript Minifier

Minify JavaScript by removing comments, extra whitespace, and unnecessary characters.

HTML Encoder / Decoder

Encode and decode HTML special characters and named entities.

Regex Tester

Test regular expressions against strings with flags, match highlighting, and capture groups.

JSON to CSV Converter

Convert JSON arrays to CSV format with download option and custom delimiters.

CSV to JSON Converter

Convert CSV data to JSON array format with automatic header detection.

Frequently Asked Questions

What developer tools are available?

We offer JSON formatting and validation, HTML/CSS/JavaScript minification, HTML entity encoding/decoding, regular expression testing with capture groups, and bidirectional JSON-CSV conversion.

Do these tools handle large files?

The tools work well for typical code snippets and medium-sized files. Since processing happens in the browser, very large files (10MB+) may be slow depending on your device.

Can I use these tools for production code?

While great for quick formatting and testing, for production builds we recommend using dedicated build tools like webpack or Vite. These browser tools are perfect for debugging, quick edits, and learning.