If you&#x27;re willing to install an addon, there is:
<a href="https:&#x2F;&#x2F;addons.mozilla.org&#x2F;en-US&#x2F;firefox&#x2F;addon&#x2F;autoreaderview&#x2F;" rel="nofollow">https:&#x2F;&#x2F;addons.mozilla.org&#x2F;en-US&#x2F;firefox&#x2F;addon&#x2F;autoreadervie...</a>
(I&#x27;m in no way affiliated with the author of the addon, nor do I use it — with Vimperator, I&#x27;m just a &quot;gr&quot; away from reader mode anyway.)