About ReliCSS
ReliCSS is a small set of CSS auditing tools I built from real project work, mainly for modernising legacy stylesheets without losing useful context.
Why I Built It
On plenty of audits, I found teams spending too much time manually scanning for old hacks, repeated values, and accidental duplication. ReliCSS helps speed up that first pass so you can focus on the decisions that matter.
The idea is simple: show where the CSS can be clearer, smaller, or easier to maintain, then let you decide what to keep, refactor, or remove.
What It Does
- Checks for legacy browser hacks and older compatibility patterns
- Flags repeated literal values that look like token candidates
- Finds duplicate declarations that can be safely cleaned up
- Runs entirely client-side so your CSS stays on your machine
Creator
ReliCSS was created by Stuart Robson, a Design Systems Consultant and Front-End Architect with over 15 years of experience helping organisations like UCL, Monotype, EMBL, and Springer Nature build scalable design systems.
Stuart cares a lot about design systems, modern CSS, progressive enhancement, and accessibility. He runs the Design Systems newsletter and speaks at conferences about design tokens, CSS architecture, and practical front-end workflows.
Connect
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