CSS Auto Formatter

This formatter processes CSS text to produce a consistent, readable output without changing semantics. It is designed for front-end developers, code reviewers, design-system teams, and CI pipelines that require a uniform baseline across files and repositories. The tool accepts raw CSS and returns a formatted version that aligns properties, blocks, and selectors according to a defined style, reducing diffs and making maintenance easier over time. It preserves comments and values while reflowing whitespace, so documentation within the code remains intact.
Core logic applies deterministic rules and modular routines. Required features include lexical parsing of CSS, token-based reflow, and a stable output order for blocks and properties; Optional/advanced features include configurable style profiles, per-project baselines, and the option to enforce specific property ordering. The tool ensures that minified or compacted input becomes legible, while never altering the code’s meaning. It handles unusual constructs such as nested blocks and vendor-prefixed properties by treating them as opaque tokens to be reformatted without modification.
Use cases span preparing code for pull requests, ensuring consistent diffs, and speeding up onboarding of new developers. Benefits include improved readability, easier automated checks, and reduced time spent on formatting debates. Unique differentiators include support for multiple style profiles, per-repo configuration, and real-time formatting that works across editor integrations and build systems. Practical scenarios include formatting CSS files in a design system library, aligning across components, and enforcing a shared CSS aesthetic in large teams.