Solved my problem Rated 5 out of 5 stars

Teeny tiny fonts in Thunderbird on my Mac Air made reading mail nearly impossible. This app has solved that problem completely. I do have to be careful about which version is installed whenever I update Thunderbird, but it is totally worth the effort. I would not be able to use Thunderbird at all if not for this add-on. A thousand thanks!!!

If only it wouldn't break everytime it updates. Rated 3 out of 5 stars

It's a pretty good extension. Helps me tweak the look of FF to my liking, but GOOD GOLLY IT BREAKS AFTER EVERY UPDATE! It's almost like the developer doesn't bother testing it before hand.

Time Bombed Rated 1 out of 5 stars

line 1012 in version 50 bootstrap.js is
if(new Date().getTime()>1482950970000) return;
THAT is a date based off switch.

Gettime line started in 48.3

Stopped working within the last 30 mins Rated 3 out of 5 stars

Also stopped working for me at 08:18 EST but was working just fine at 07:56 EST.

I reverted back to version 48.1 (last one that seems to "always" work) to get it back up and working. As others here stated, I also turned "off" auto-update so it won't die again!

Would've rated it higher as I've been using it for quite a while and find it very helpful but, until the developer figures out how to fix it so it doesn't stop working every other week or so, I couldn't honestly give it anything higher than 3 stars.

This review is for a previous version of the add-on (49.6). 

Stopped working Nov 28 Rated 1 out of 5 stars

restarted Thunderbird today and this extension does not work anymore!

This review is for a previous version of the add-on (49.6). 

Disabled by timer on 28th Nov Rated 1 out of 5 stars

Can everyone confirm that it stopped working this time on the 28th Nov? It's certainly on a timer, but trying to establish if the same day for everyone or from date of install.

This review is for a previous version of the add-on (49.6).  This user has a previous review of this add-on.

Once again, this defective addon is NOT working Rated 1 out of 5 stars

If the competence of this addon was only half as good as its incompetence, it might actually work more than 1/4 of the time.

This review is for a previous version of the add-on (49.6).  This user has a previous review of this add-on.

Doesn't do anything Rated 1 out of 5 stars

It says I can set fonts. Nope. The only preferences are 3 about hiding the Tools menu, hiding the App menu and abbreviating some labels.

I am removing it now.

This review is for a previous version of the add-on (49.6). 

sehr hilfreich für alte, müde Augen Rated 4 out of 5 stars

Ich habe aufgerüstet, direkt von Maverick (10.9) auf macOS Sierra (10.12) . Seitdem scheint die Standard Schriftgrösse in allen Thunderbirdfenstern kleiner geworden zu sein. Ich werde das noch verifizieren, indem ich 10.9 ab einer BackupPlatte boote.
Jedenfalls macht die Zoom Funktion in diesem AddOn, auf den ersten Blick genau das richtige, sie zoomt alle Ansichten in Thunderbird.
Eine kleine Einschränkung habe ich bereits festgestellt: Die PopUp Fensterchen, welche beim 'Überfahren' eines Icons mit der Maus aufpoppen, erscheinen durch den Zoom an falscher Stelle und schneiden den Text darin z.T. ab.. Unschön, aber nicht lebenswichtig..
Generell frage ich mich, warum Thunderbird (V 45.4.0) unter macOS 10.12. bis jetzt als einzige App, mit für mich unleserlich kleiner Schrift daher kommt. ??

This review is for a previous version of the add-on (49.6). 

Love it when it works Rated 3 out of 5 stars

After most updates it disables itself. And I install and older version of it. I have 47.5 now and it's works good this has been my go to version. You get one that works disable automatic updates.

This review is for a previous version of the add-on (49.6).  This user has 2 previous reviews of this add-on.

Addon disables itself Rated 4 out of 5 stars

A great and useful addon, but like previously mentioned it randomly disables itself from time to time. Only getting 4 stars till its fixed.

This review is for a previous version of the add-on (49.6). 

Rated 5 out of 5 stars

Thank you very much for this software. This addon is absolutely brilliant. Good luck!

This review is for a previous version of the add-on (49.4). 

Theme Font & Size Changer 49.2 - funktioniert wieder :) Rated 5 out of 5 stars

Das AddOn "Theme Font & Size Changer 49.2" funktioniert wieder unter den aktuellen Firefox-Versionen 49.x

Die alte/bisherige Version erst deinstallieren, Browser beenden und NEU starten, anschließend die V.49.2 installieren.
Jetzt läuft "Theme Font & Size Changer" wieder problemlos.

Danke an den Entwickler :)

This review is for a previous version of the add-on (49.2). 

Just update! Rated 5 out of 5 stars

I emailed Baris and he suggested this: "Please make sure you have the latest version of the add-on by following Tools > Add-ons pathway from Thunderbird/Firefox menu.

Add-ons page is opened as a new tab. At the top right of the page there is a small "gear" button. Click on it and choose "Check for updates" option."
I never realized you could check this and always just kept all of the extension "Auto Update" enabled.
I'm sure these issues are because Mozilla is messing with things. We can't expect these developers to be awake and aware 24/7.

This review is for a previous version of the add-on (49.2). 

easy to use, constant updates, broken Rated 2 out of 5 stars

Tired of the constant updates, browser opening up to their website on it's on, it's been broken since the last update.

This review is for a previous version of the add-on (49.2). 

Hello,

Please make sure you have the latest version of our add-on which is v.49.2
https://addons.mozilla.org/en-US/firefox/addon/theme-font-size-changer/

Let us know if you have any issues still by providing operating system, Firefox version and add-on version please. If possible please send us the screenshot of the issue.

support@barisderin.com

Regards,
Baris Deri

Any alternative? Rated 1 out of 5 stars

Is there any alternative to T&F changer for firefox? This plugin simply no longer works. Unfortunate.

This review is for a previous version of the add-on (49.2). 

Hello,

Please make sure you have the latest version of our add-on which is v.49.2
https://addons.mozilla.org/en-US/firefox/addon/theme-font-size-changer/

Let us know if you have any issues still by providing operating system, Firefox version and add-on version please. If possible please send us the screenshot of the issue.

support@barisderin.com

Regards,
Baris Derin

Addon broken for the third time in one month! Rated 1 out of 5 stars

Every update seems to be screw up. What is the developer upto? It does NOT do what it says on the tin! What is this non-functional and broken addon doing on a website meant for production?

This review is for a previous version of the add-on (49.2). 

Hello,

Please make sure you have the latest version of our add-on which is v.49.2
https://addons.mozilla.org/en-US/firefox/addon/theme-font-size-changer/

Let us know if you have any issues still by providing operating system, Firefox version and add-on version please. If possible please send us the screenshot of the issue.

support@barisderin.com

Regards,
Baris Derin

Down again on FF 49.0.1 Rated 1 out of 5 stars

Been sporadic sine initial issue about 2 weeks ago. Updated to FF 49.0.1 and its down again. Is present in Add-ons but not on Tools Menu dropdown and no functionality is present.

This review is for a previous version of the add-on (49.1). 

Hello,

Please make sure you have the latest version of our add-on which is v.49.2
https://addons.mozilla.org/en-US/firefox/addon/theme-font-size-changer/

Let us know if you have any issues still by providing operating system, Firefox version and add-on version please. If possible please send us the screenshot of the issue.

support@barisderin.com

Regards,
Baris Derin

Comes & goes ! Rated 1 out of 5 stars

Don't know, now since a while, the icon comes & goes and the set fonts come as per their default, very annoying !
I am using it since years, and now since a while, it just bugs !

This review is for a previous version of the add-on (49.1). 

Hello,

Please make sure you have the latest version of our add-on which is v.49.2
https://addons.mozilla.org/en-US/firefox/addon/theme-font-size-changer/

Let us know if you have any issues still by providing operating system, Firefox version and add-on version please. If possible please send us the screenshot of the issue.

support@barisderin.com

Regards,
Baris Derin

48.1 still working Rated 4 out of 5 stars

Win7pro 64 laptop, having same issues as noted here. Reinstalled 48.1 several days ago and still working.

This review is for a previous version of the add-on (49.1). 

Hello,

Please make sure you have the latest version of our add-on which is v.49.2
https://addons.mozilla.org/en-US/firefox/addon/theme-font-size-changer/

Let us know if you have any issues still by providing operating system, Firefox version and add-on version please. If possible please send us the screenshot of the issue.

support@barisderin.com

Regards,
Baris Derin