.critical-css { }
@media screen
performance++
{ optimize: true }

Frequently Asked Questions

Find answers to common questions about our service

Do you have an API?

Features

Yes, we offer a robust REST API for Pro and Enterprise users. You can generate Critical CSS programmatically for thousands of pages.

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Can I preview the Critical CSS?

Features

Yes, our dashboard provides a preview feature where you can see exactly how your page looks with only the Critical CSS applied, before you deploy it.

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Do you support HTTP/2?

Features

Our infrastructure is fully HTTP/2 compliant, ensuring fast delivery of API responses and assets.

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Is there a bulk generation feature?

Features

Enterprise plans include bulk generation tools that allow you to submit a sitemap and generate Critical CSS for your entire site at once.

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Do you keep a history of generated CSS?

Features

Yes, we keep a history of your recent jobs in the dashboard. You can view, copy, or regenerate CSS from previous jobs.

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Can I whitelist my IP?

Features

For Enterprise customers, we offer IP whitelisting to ensure secure access to your internal staging environments.

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Do you support dark mode?

Features

If your site uses media queries for dark mode (`prefers-color-scheme`), our generator will preserve those rules so your dark mode works instantly.

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What about print styles?

Features

Critical CSS focuses on screen media. Print styles are typically non-critical and should remain in your main stylesheet.

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Can I exclude specific selectors?

Features

Our advanced options allow you to manually exclude or force-include specific CSS selectors if the automatic detection misses something.

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Is the CSS minified?

Features

Yes, all generated Critical CSS is automatically minified to ensure the smallest possible payload size for your HTML.

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Do you support mobile views?

Features

Absolutely. Our generator checks both desktop and mobile viewports to ensure your site looks great and loads fast on all devices.

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