How do WordPress plugins affect site performance?

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One of the best things about building websites with WordPress is the flexibility you get from the wide range of WordPress plugins available. But every plugin that is added affects the performance of the website. If the number of installed plugins is high, the difference can be quite significant. Dev4Press has published a detailed test showing how 35 different plugins affect the performance of a WordPress website, and it is a really interesting post that provides a good point on optimization by simplification. In some cases, it may actually not be worth installing some plugins as the negative effect on performance is bigger tan te positive effect of the added feature. Check it out, and if you know about more tests similar to this, I’d be happy to know about them.

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This article was written by Andreas Viklund

Web designer, writer and the creative engine behind this website. Author of most of the free website templates, along with some of the WordPress themes.


Andreas ViklundJanuary 16, 2012 at 04:19Reply

Test comment posted on, using my connected Facebook account…

BrandonJanuary 16, 2012 at 22:55Reply

Thanks for posting this.

I always knew that adding plugins added weight to my sites – but never knew how to measure the load “cost”.

This is insightful.

Kaye SwainFebruary 9, 2012 at 02:52Reply

Thanks for an interesting article. I’ll definitely have to review all my plugins and see if there are some I can eliminate. I appreciate the excellent food for thought.