Easy Critical CSS Documentation

Welcome. These guides show you how to install Easy Critical CSS, use it in free mode, and set up automatic CSS generation.

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Quick Start

Install Easy Critical CSS Add the plugin in WordPress and activate it.
Set default CSS (free) Paste Critical and Secondary CSS in the main settings.
Add per-page CSS (free) Generate CSS for one URL and paste it into that page.

 

Automatic Generation

Connect the API Enable automatic Critical CSS generation using the API.
Global Auto Mode Settings Control site-wide Critical and Secondary CSS generation.
Individual Post/Page Settings Fine-tune Critical CSS behavior for a single URL.
Cloudflare setup Configure Cloudflare so CSS updates clear cache correctly.
Automatic Generation Failures Understand and resolve repeated automatic generation failures.

Verify and Fix

Verify Critical CSS Simple checks with View Source or DevTools.
Troubleshooting Fix layout issues, missing CSS, or cache problems.

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Last updated: January 21, 2026 · Plugin version: 1.4.6