Very nice add-on, but the latest 55.2 version shows up in a new tab instead of a window Rated 4 out of 5 stars

I liked the separate window that was showed until v55.0 much more...
Anyway, this is a must have add-on for me since Thunderbird v52, because the default fonts are ugly as hell! J-)

Rated 1 out of 5 stars

useless

Rated 5 out of 5 stars

Really pleased with this - it does exactly what I want in a neat, convenient way. Great support from the developer too!

Great add-on Rated 5 out of 5 stars

I use this every day because I switch between multiple monitors with different resolutions. It's exactly what I need.

Makes a huge difference in Thunderbird Rated 5 out of 5 stars

I used Thunderbird but hated the very small size of text. After fussing around with adding a userChrome.css to Thunderbird I still wasn't satisfied.

Using Theme Font & Size Changer I was immediately able to change the size of the font so that I can actually read my email without squinting and getting a headache. The Add-on is so simple to use - and makes an enormous difference. Thank you!

Theme Font & Size Changer Issue Solved Rated 5 out of 5 stars

We were running Thunderbird 52.3.0 and updated extensión Theme Font & Size Changer to 55.1. The extensión stopped working.

Now we have applied the new versión:

https://addons.mozilla.org/en-US/firefox/addon/theme-font-size-changer/versions/55.2

And it Works again.

Thnks

Simples e Necessário Rated 5 out of 5 stars

Mudar a fonte é útil em várias situações:
Para enxergar melhor;
Para deixar o visual personalizado;
Para combinar com a persona (tema);
Para variar.
Recomendado para quem quer tornar seu navegador único.

This review is for a previous version of the add-on (55.1). 

Should be a Feature Rated 5 out of 5 stars

Perfect, and needed for many.

This review is for a previous version of the add-on (55.0). 

Wow! Rated 5 out of 5 stars

Just what I needed, to change the toolbar color....

This review is for a previous version of the add-on (55.0). 

Display problem Rated 5 out of 5 stars

Does not display well in the latest version of firefox

This review is for a previous version of the add-on (55.0). 

Firefox 57 version? Rated 5 out of 5 stars

Great great addon ! i hope you will upgrade it as a webextension for FF 57+ !

This review is for a previous version of the add-on (55.0). 

Still a 5-Star Extension, But... Rated 5 out of 5 stars

The latest update has eliminated all spaces between the icons on my Bookmark Bar. Can't provide a screenshot as the tool I'm using can't capture the BB. My icons are crammed together and it's very dense. I hope you can fix this. Thank you.

This review is for a previous version of the add-on (55.0).  This user has 2 previous reviews of this add-on.

5 Rated 5 out of 5 stars

I LOVE IT.IT'S WORKING WELL.THANK YOU!COLOR SECTION ALSO IS WONDERFUL .WELL DONE. GOOD JOB

This review is for a previous version of the add-on (55.0). 

Thank you for your continuous support. Rated 5 out of 5 stars

Today's updates Theme Font & Size Changer working great with firefox 55.0.2. Thank you for your support.

This review is for a previous version of the add-on (55.0). 

Works Great on Firefox 55.0.2 For Me! Rated 5 out of 5 stars

I'm wondering why it's not working for some folks. Does the operating system make a difference? I'm using a Lenovo i5 (notebook) laptop with operating system: Windows 10 Home (64 bit). What a godsend this add-on is!

This review is for a previous version of the add-on (55.0). 

Not working Rated 5 out of 5 stars

Love this but not working 55. 02, check asap, please

This review is for a previous version of the add-on (54.0). 

You don't realize how essential this is until it breaks Rated 5 out of 5 stars

The developer is great about updating so I'm confident it will begin working again. Terrific add-on that is essential for me with my severe eye issues.

This review is for a previous version of the add-on (54.0). 

This should be built into Firefox Rated 5 out of 5 stars

This is a must have addon for anyone with less than perfect eyesight. For those of us with poor eyesight it has been a Godsend. Sadly, with Firefox 55 it has been rendered completely inoperable despite the Version 56 tag it carries. Hoping it can be updated to WE but fearing that it's not even possible. Many thanks for the years this addon has made my browsing possible.

This review is for a previous version of the add-on (54.0). 

Fantastic Rated 5 out of 5 stars

With Windows 10 you can change the font scaling for the system, but Firefox doesn't recognize it. There are no built in options to do what this app/extension does. This add on should be built into Firefox. You shouldn't have to add it, but many thanks to the author.

This review is for a previous version of the add-on (54.0). 

Rated 5 out of 5 stars

Makes up for many shortcomings of stock FFox UI

This review is for a previous version of the add-on (53.0).