
What’s better, ClassicPress or WordPress? A hands-on comparison.
Written By Beda Schmid on August 26, 2021 at 8:09 am
In this article, we will provide a hands-on comparison between WordPress versus its alternative, ClassicPress.
Which CMS should you use for professional, business or personal websites?
When deciding what is better between two products, especially software, it comes down more often than not to personal preferences. But we won’t be talking about personal likes or dislikes in this post.
We will look only at facts and reasons why you should probably consider using ClassicPress instead of WordPress.
A clear winner here is ClassicPress.
You might say, in today’s modern web, a size of a CMS does not matter, and you are probably right, as long you plan to serve only people who have access to privileged services. Not everyone has the money to pay for massive servers, and space is a concern.
Every time WordPress loads, it will request the whole bulk of files (at least when it comes to the admin area). People on a slower or limited internet connection will feel that.
We then tested the sites using Chrome’s inbuilt Lighthouse to check both the Front End (as logged out user) and the Backend (Editing a post).
On the Front End, the two CMS compare almost the same on a default Homepage.
ClassicPress is a tiny tad more performant; WordPress is a bit more elaborate.
For example, it includes a robots.txt and sitemap.xml, which is not part of ClassicPress. Such details help score better on the SEO Audit. However it is probably not a CMS task to load a robot and SiteMap – rather something that a plugin should do, since not every instance of WordPress or ClassicPress will need such structures. This is just one of the many examples of how you can bloat a system unnecessarily.
ClassicPress, on the other hand, scores a little less good in the Best Practices Audit because it still includes an older jQuery version: 1.12.4 instead of the 3.6.0 included by WordPress. ClassicPress Developers will address this in future releases, ad the jQuery library was patched already by WordPress before ClassicPress was forked from it, thus this can be considered a false alarm.
However, on a Post with a simple Heading, Image, Paragraph and List, the performance already starts to show its differences.
WordPress loses in most aspects versus ClassicPress – probably due to the bizarre way to apply styles to the contents and the stripping of comments that WordPress does when rendering the Content. In the backend, WordPress Blocks have many structural comments, which are hidden in the front end. This is not a default browser behaviour and thus must be done somewhere between the server and the browser, which costs time).
One might think it is all the same; the performance differences are, after all, not that big. However, the Audits look very different in the backend when editing a post, for example.
This test confirms our own experience with Blocks editor, where, more often than not, we find ourselves waiting for some spinner to process or some “Please wait” message to go away.
WordPress vs ClassicPress Source Size
Without further ado, let’s first compare the Size of the CMS you will be using. WordPress, as it stands, is a whopping 59.2 MB heavy. ClassicPress barely weighs 32MB. That is almost half the size with virtually the same features.
Total Size of CMS Folder
Why is WordPress so much heavier than ClassicPress?
The differences mainly are in the wp-includes folder — almost 42 MB of size in WordPress versus 18MB in ClassicPress. But where precisely is the difference? Well, we can see the differences in the wp-includes folder on a WordPress and ClassicPress install respectively: WordPress has several Folders more in said wp-includes folder. There is a folder called “Blocks”, another called “Block Supports”, then one more called “Assets” and finally a “Block Patterns.” But that is not what makes up for all the differences in size. Folders such as the “CSS” Folder in ClassicPress are merely 600kb in size; in WordPress, it features a bloated 3MB of styles. The JS folder is 8MB in ClassicPress versus almost 23MB in WordPress. That is also due to the Blocks implementation – and it is literally insane, in Our Opinion. Below the sizes of mentioned folders, the screenshot taken directly from the Mac Finder File Info Window.
Example – CSS Folder Size

Example – JS Folder Size
Why all this bloat in WordPress?
Well, that is clear and we hinted it above already: ClassicPress does not have the Blocks implementation. Blocks are probably the most significant difference between the two CMS and account for a lot of this code weight present in WordPress. But OK, you only serve visitors and clients in a privileged area of the world? You do not need to worry about incomplete “background” requests aborted due to tiny internet connection drops? You don’t need to worry about server space and bandwidth? Climate is screwed anyway, so why bother up- and downloading a tiny few MBs more to a server, right? Any other reason why you’d have to be careful proceeding with WordPress in future? Well, yes. Let’s compare actual speed and requests, in the back and frontend.WordPress vs ClassicPress in Performance in the Front End
Using the same plugin to measure performance on both sites (QUery MOnitor), I run WordPress and ClassicPress, both on the same server, with the same PHP and MY SQL, everything the same, just the CMS differs. Note that I used Theme Twenty Seventeen so that both CMS could use the same Theme as well. On the first page load in the front end, WordPress took 0.8 seconds to generate the page. CP took 0.4 seconds. That is no matter how we put it, twice as fast. WordPress used almost 24kb memory (almost 60% of the available memory), whereas CP used less than 19kB, or in other words, significantly less than 50% of the available memory. WordPress had to perform 25 queries, while ClassicPress was ready with 19 Queries. Remember, this test used the same Theme for both Sites. Thus the differences are only in the CMS.
ClassicPress Query Monitor

WordPress Query Monitor

ClassicPress Lighthouse

WordPress Lighthouse

WordPress SEO

ClassicPress SEO

WordPress Single Post LightHouse

ClassicPress Single Post LightHouse
WordPress vs ClassicPress Performance in the Backend
In ClassicPress, you have a pretty satisfying result; it could be better, but OK for the backend. In WordPress, you are in the red area. Performance is down to 29 when using WordPress, and that is not even yet having any blocks in the editor. Remember, this test was made on plain vanilla installs, with no ulterior content added.
WordPress Backend

ClassicPress Backend