How I reduce CSS size under 50KB for AMP

Here’s how I reduce CSS size under 50KB for AMP. It’s mandatory requirement from Google AMP. The short answer: remove the unused CSS codes for the page you’re going to convert to AMP.

Long answer:

Easier said than done, especially when the webpage you’re going to convert to AMP had very large CSS codes.

Read on my own story below . . .

I am getting more and more requests to build AMP pages from existing pages.

However, there are many occasions that the existing pages contain a large chunk of CSS.

The problem is, almost all of the site owners I met, ask to make their site’s AMP page to look similar to the site’s look on the mobile phones.

That makes sense.

But this also raised another big problem: AMP pages had a restriction for CSS size, 50 KB at maximum.

Not only that, it’s not allowed to load any custom external CSS.

All styles must be loaded inside the

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