Linux

RSS feed site icon resolution

by jb

This post shows how you can increase the resolution of the RSS feed site icon from the default 32×32 to 300×300.

I had the issue that on the feed reader I use (Podcast Addict) the blog icon (not the featured images of the posts) were blurry. After some investigation it turns out that the default wordpress RSS generator uses a 32×32 pixel resolution of the site icon (The site icon was already set in WordPress under Dasboard => Settings => General => Site icon). The 32×32 resolution can be seen from the RSS feed xml file (click).
To change the resolution to 300×300 we need to adjust the function rss2_site_icon in the file feed.php in the wp-includes folder of the wordpress installation.

Here are the three lines that we need to change in the original form:

$url = get_site_icon_url( 32 );
<width>32</width>
<height>32</height>

And in the fixed form:

$url = get_site_icon_url( 300 );
<width>300</width>
<height>300</height>

After that we can see the change on the RSS feed xml file and we can refresh (or re subscribe) to the RSS feed to see the changed site icon.