CSS/JSON Formatter

This tool formats CSS and JSON code to improve readability and consistency across development teams. It accepts plain CSS or JSON as input and outputs a cleaned, properly indented version that aligns with common style guides. Users include front-end developers, QA engineers, technical writers, and educators who prepare samples for documentation, demos, or code reviews. The formatter emphasizes presentation and structure, not execution. It maintains semantic content while applying consistent whitespace, line breaks, and token spacing. It supports both beautify and minify modes, enabling quick pasting of snippets into emails, READMEs, or issue trackers.

Core logic detects the input language when not explicitly provided and applies language-specific rules. For CSS, it reflows selectors, properties, and blocks with configurable indentation and optional comment preservation. For JSON, it parses data and then serializes with a chosen indentation level, ensuring valid syntax. Outputs include a string containing the formatted code and a size estimate. The tool can also minimize whitespace when the minify option is selected. Error handling reports syntax issues without modifying the original content, allowing users to correct input before reformatting.

Key differentiators include support for both CSS and JSON in a single workflow, predictable formatting outcomes, and adjustable formatting preferences. Use cases span preparing docs, improving diffs in pull requests, validating sample configurations, and teaching formatting rules. The tool is designed for speed, accuracy, and offline reliability, making it suitable for environments with strict IP or network constraints.