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Free Web Developer Tools Online

A complete suite of web developer utilities for formatting, validating, converting, and minifying code. All tools are client-side — your code never leaves your browser.

From formatting a JSON API response to minifying CSS for production, these tools accelerate everyday developer tasks. Tools like JS Obfuscator protect client-side code, while converters like CSV-to-JSON and XML-to-JSON handle data format bridging — common tasks in API integration and data pipelines.

JSON FormatterFormat and prettify any JSON string with proper indentation.JSON ValidatorValidate JSON syntax and get clear error messages.JSON MinifierMinify JSON by removing whitespace and formatting.JSON ViewerView JSON as an interactive tree with collapsible nodes.JSON EditorEdit JSON with syntax highlighting and real-time validation.HTML BeautifierFormat and indent HTML code for readability.HTML MinifierMinify HTML by removing whitespace and comments.CSS BeautifierFormat CSS code with proper indentation and line breaks.CSS MinifierMinify CSS by removing whitespace for production.JavaScript BeautifierFormat and indent JavaScript code for readability.JavaScript MinifierMinify JavaScript for smaller file size.JavaScript ObfuscatorObfuscate JavaScript to make it harder to read.CSV to JSONConvert CSV data to JSON format instantly.JSON to CSVConvert JSON arrays to CSV format.XML to JSONConvert XML documents to JSON format.JSON to XMLConvert JSON objects to XML format.

Frequently Asked Questions

Is my code safe to paste here?

Yes. All tools run 100% client-side in your browser. No code is sent to any server.

What is the difference between beautify and minify?

Beautify (format) adds indentation and whitespace to make code readable. Minify removes all unnecessary whitespace and comments to reduce file size for production.

Can I validate JSON with comments?

Standard JSON does not support comments. The JSON Validator will flag commented JSON as invalid. Use the JSON formatter to strip comments before validating.

Does JS Obfuscation actually protect my code?

Obfuscation makes code harder to read but not impossible to reverse-engineer. It is a deterrent, not encryption. For genuinely sensitive logic, keep it server-side.