Inline styles increase the HTML file size, which can affect the page load time. Internal styles are part of the HTML file, which increases the file size. External styles are in a separate file, which reduces the HTML file size and can be cached for faster page loads.Inline Styles Are Not Best Practice
The styles affect only the particular, individual elements to which they're applied; while that approach might give you more granular control, it also makes other aspects of design and development—such as consistency—more difficult.Disadvantages of Inline CSS:
It's difficult to keep up, reuse, and scale. The size and download time of your page can be affected by styling multiple elements. Inline styles cannot be used to style pseudo-elements and pseudo-classes.
Is inline CSS faster : In short, the main difference between inline CSS and external CSS is that the former is processed faster as it only requires the browser to download one file, while external CSS will require downloading HTML and CSS files separately.
Why is external CSS better
Using external CSS is considered the best practice for a few reasons. Since you can make changes across your site by changing the CSS in this external file, it's the most time-effective method. It's the most SEO-friendly. Storing CSS in another file makes your HTML file easier to read for search engines.
Is inline CSS slow : Inline CSS is often faster because it skips 1 or more network requests. CSS blocks the rendering of the page.
Using internal CSS is considered a better practice than using inline CSS because it is easier to maintain and results in less code.
Disadvantages of Inline CSS
- You cannot use quotations within inline CSS.
- These styles cannot be reused anywhere else.
- These styles are tough to be edited because they are not stored at a single place.
- It is not possible to style pseudo-codes and pseudo-classes with inline CSS.
Is inline CSS bad for SEO
In addition, using inline stylesheets for SEO purposes can render the site non-standards compliant and lead to code clutter and long, redundant lines of code. One of the main problems with using inline stylesheets for SEO purposes is the potential for conflicts between style sheets due to cascading order.Inline CSS is often faster because it skips 1 or more network requests. CSS blocks the rendering of the page. While the CSS files are being fetched from the server, your browser blocks and delays the rendering of the page.Inline CSS has the highest priority, then comes Internal/Embedded followed by External CSS which has the least priority. Multiple style sheets can be defined on one page. For an HTML tag, styles can be defined in multiple style types and follow the below order.
External CSS can have a slightly higher impact on performance, as the CSS file needs to be fetched from the server through an HTTP request. However, once the CSS file is cached by the browser, subsequent page loads will be faster.
Why not use inline : inline functions might make it slower: Too much inlining might cause code bloat, which might cause “thrashing” on demand-paged virtual-memory systems. In other words, if the executable size is too big, the system might spend most of its time going out to disk to fetch the next chunk of code.
Are inline styles bad for SEO : Inline stylesheets can cause website configuration issues, high page load times, and contribute to poor website performance. In addition, using inline stylesheets for SEO purposes can render the site non-standards compliant and lead to code clutter and long, redundant lines of code.
Does inline CSS affect page speed
Using inline CSS on critical page elements helps to speed up load time. There are two main aspects that affect how quickly a web page loads: the time it takes the server to respond and deliver the code and the time it takes the browser to render that code into what the user sees.
inline functions might make the code faster, they might make it slower. They might make the executable larger, they might make it smaller. They might cause thrashing, they might prevent thrashing. And they might be, and often are, totally irrelevant to speed.However, when overdone, inlining code can also have negative effects on the performance of the site: Because the code is not cacheable, the same content is sent to the client repeatedly, and it can't be pre-cached through Service Workers, or cached and accessed from a Content Delivery Network.
Are inline styles slow : Yes, inline styles are technically faster than an external stylesheet because you are making one less request on top of the page but using an external stylesheet is much preferred for code maintainability.