Project Wallace
Project Wallace analyzes CSS complexity, specificity, performance, and design tokens.
About Project Wallace
Project Wallace analyzes CSS submitted as raw text or via URL. It surfaces selectors, media queries, properties, specificity, colors, typography, cascade layers, and design token values, with counts and visualizations.
It also provides a quality score based on specificity distribution, redundancy and selector complexity, plus inspectors for custom properties and @layer structure, and separate tools for tasks such as minifying, prettifying, diffing and specificity calculation.
Key features
- Analyze CSS from a URL or pasted raw CSS
- Count and visualize selectors, media queries and properties
- Score CSS health from specificity, redundancy and complexity
- Extract and group colors, font sizes, shadows and spacing
- Track declared, used and orphaned custom properties
- Visualize cascade layer order, nesting and specificity
Best for: Developers and teams reviewing large stylesheets or design systems for complexity, specificity and token consistency.
Good for
- Accepts both a URL and pasted raw CSS for analysis.
- Standalone CSS tools state no signup or paywall.
- Covers selectors, tokens, custom properties and cascade layers together.
Project Wallace at a glance
- Website
- projectwallace.com
- Category
- Development › Developer Tools
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
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Project Wallace FAQ
How do I submit CSS for analysis?
Paste a URL or paste your raw CSS.
Do the standalone tools require signup?
No. The site states no signup and no paywall for those tools; you paste CSS to use them.
What does the quality score consider?
Specificity distribution, redundancy, selector complexity and proven best practices.
Is something wrong or out of date?
Tell us and an editor will check it.
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