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Editorial Team
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Asked: 2026-05-15T01:10:13+00:00

As far as I know, these days there are two main techniques used for

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As far as I know, these days there are two main techniques used for including CSS in a website.

A) Provide all the CSS used by the website in one (compressed) file
B) Provide the CSS for required by the elements on the page that is currently being viewed only

Positives for A: The entire CSS used on the site is cached on first visit via 1 http request
Negatives for A: if it’s a big file, it will take a long time to load initially

Positives for B: Faster initial load time
Negatives for B: More HTTP requests, more files to cache

Is there anything (fundamental) that I am missing here?

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  1. Editorial Team

    Profile it. It depends on the way your users use your site.

    If it’s a web application and your users are likely to interact with it a lot and see most of the layout you designed, you probably want to use a single CSS which is loaded once and then stored in the browser cache. The first time overhead is negligible in this case.

    If most of your users come with a cold cache and just look at two or three pages, separate CSS files will probably improve their experience.

    You can’t tell without having a look at what the users actually do.

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