CSS linting tools will save you precious time in the code review process, and so will the formatters, validators and optimizers that usually sit alongside them. Writing well-structured, optimized CSS by hand is tedious, and spotting mistakes by eye is worse.

This review was first written in 2014, and most of the tools it covered then are no longer maintained. So we've rewritten it around the open source CSS tooling teams use today. There's a short note on what happened to the original list at the end.

1. Stylelint

Stylelint is a dedicated CSS linter that helps you avoid errors and enforce conventions.…