Rated 5 out of 5 stars

This is a great add-on! It's a complete shame that FFox Quantum won't support this any more. Thanks for adding a TBird specific version now that FFox Quantum doesnt work with it. Could you make a similar version for Firefox ESR so that we can continue to use it, but not get updates on the version used by FFox Quantum?

This review is for a previous version of the add-on (62.0). 

Rated 4 out of 5 stars

have messed with this and am going crazy but i have a fix that works for me. was using waterfox with updates disabled but that didnt work as of yesterday with size font and theme changer. so now am using an older version of palemoon where everything seems to work. its version 26.5. i have all updates disabled and using version 43.4 of theme font and size changer. icon is visable and all works correctly. also any downloads work easily with download helper. more recent versions of palemoon do not work correctly with these addons. best of luck to all who need this to see easily. win7 64

This review is for a previous version of the add-on (62.0). 

Rated 4 out of 5 stars

Found link to Happy One and re-installed Theme and Font Size Changer. So far it is working.

Thank you Steven

This review is for a previous version of the add-on (62.0).  This user has a previous review of this add-on.

Rated 4 out of 5 stars

Running Windows 7.
The fix from Happyone worked... thanks!
[for slow people like me .. the 'add from file' option is in the 'gearwheel' displayed at the top of the Add-ons Manager page in TB]

**********
commenting on the response from Baris Derin 9 jan 2018.
... "Hello, please do not install other add-ons other than official page. Those may steal your mails and important files from your computer. Uninstall the other add-ons that are not offered by us."

Many thanks for the work you have done that makes TB usable for me. With the TB standard font size it is too hard to read.

I realize installing an add-on from an official source carries the risk you describe. If If TFSC will not run then my other choice is find/install another email client, re-add the email accounts, pull down nearly 100K email headers. The alternative of accepting the risk with the unofficial add-on seemed less painful.

I would not have installed the unofficial add-on if I had seen a developer post acknowledging the problem and saying when a fix might be available but I could not find any information.

I have now uninstalled the add-on from the unofficial source and reinstalled the official version ... and it still does not work with TB 52.5.3 so I am back to the same problem I started with. Please tell me what I need to do to get the official version of TFSC to work.

thanks

This review is for a previous version of the add-on (62.0). 

Hello, please do not install other add-ons other than official page. Those may steal your mails and important files from your computer. Uninstall the other add-ons that are not offered by us.

Rated 2 out of 5 stars

I'm using Windows 10 and am legally blind. A few days ago my ability to adjust the font size on Thunderbird disappeared and the font was set the the very small default setting. When I tried to download the new version, I read that it was not available for my platform. WHY NOT????? I need to be able to increase the font. I will probably have to switch to a new e mail system. What is with you guys?

This review is for a previous version of the add-on (62.0). 

Rated 1 out of 5 stars

I cannot install it. When I go to the suggested URL for T-Bird users to download, I get a message "this...if...not available for your platform" This is a most frustrating situation. I had everything running along well until about five days ago when Thunderbird reverted to a very tiny font (almost illegible) and I cannot restore my larger font, etc.

Please supply me with a uncorrupted version of the add-on suitable for Windows 7,and Thunderbird 52.5.2.

Thank you

Steve Bonrepos
[email protected]

This review is for a previous version of the add-on (62.0). 

Rated 4 out of 5 stars

Still trying to get this fixed on my MacBook, running El Capitan 10.11.6. First few tries using HappyOne's link didn't seem to do it. Anybody have step by step assistance for a Mac installation? Thunderbird version 52.5.0.

AHA! Never mind. Got it. Thanks HappyOne.

This review is for a previous version of the add-on (62.0). 

Rated 5 out of 5 stars

Thanks Happyone for making it so easy to solve this problem. I spent a lot of time yesterday trying the unzip/zip change bootstrap solution but I am too unfamiliar with these things and failed.
I confirm what the previous poster said: this great offering by Happyone will not work with TB 58 Beta. But it works like a charm with the previous version 52.5.2
Download the file from the link Happyone provides, then go to your TB 52.5.2, click on the menu (3 lines in top right hand corner, go to add ons, click on the wheel for a drop down menu, choose 'install add on from file' , browse for that file and install. Thanks again.

This review is for a previous version of the add-on (62.0). 

Rated 5 out of 5 stars

Pour les non-pros, en français: télécharger via le lien donné par Happyone (drive.google..), avec votre navigateur préféré (Firefox bien sûr) ,et enregsitrer le fichier (sur le bureau ou autre).
Ouvrir Thunderbird, désinstaller le Plugin Theme Font" qui ne fonctionne plus.
Ouvrir la fenêtre "Module complémentaires" , via l'onglet "Outil". Cliquer sur la roue crantée et choisir, "installer un module depuis un fichier" et choisir le fichier téléchargé.
Et hop on a retouvé notre super petit outil bien utile !!
Merci à tous.

This review is for a previous version of the add-on (62.0). 

Rated 1 out of 5 stars

Finalement j'ai réussi à télécharger le fichier avec un autre navigateur.
J'ai vu la réparation:
ligne 1380 de bootstrap.js
Merci

This review is for a previous version of the add-on (62.0).  This user has a previous review of this add-on.

Rated 5 out of 5 stars

For everyone out there not sure what to do with the xpi file downloaded via Happy One's link: I opened up Add-ons in Thunderbird, removed the old version, and then just dragged the new xpi file into the Add-ons box. Worked for me with ver. 52.5.2 on Win10

This review is for a previous version of the add-on (62.0). 

Rated 5 out of 5 stars

I so appreciate having the link to the file. All is working again. I am wondering, though.. should updates be turned off?
thanks again

This review is for a previous version of the add-on (62.0).  This user has a previous review of this add-on.

Rated 5 out of 5 stars

Thank you Happyone! All works fine now.
However, I discovered the fixed version does not work in the latest beta version, 58.0b2 (2017.12.10). Maybe that's a known limitation?, I don't know. I reinstalled the latest TB release 52.5.2 and then installed the fixed add-on here (after removing the old one) and things are back working. Thank you!


(previous comment, with 1 star rating)
The latest version 62.0 (from Nov 15, 2017) does not work at all in the latest 32-bit Thunderbird, v52.5.2. There is no option in the Tools menu, nor any status bar button, in other words, no way to access the settings. This makes the add-on currently rather useless.

Please fix. Thanks!

Meanwhile, will try the fix others have detailed in the comments.

This review is for a previous version of the add-on (62.0). 

Hello, please do not install other add-ons other than official page. Those may steal your mails and important files from your computer. Uninstall the other add-ons that are not offered by us.

Rated 5 out of 5 stars

Still 5 stars even though we had to fix it ourselves, although the creator might not have had a chance yet.
Thanks to everyone who worked on the changes, and for the correct download link.
Just right-click on the Install button to save the .XPI file to a folder-directory.
(it is just a ZIP archive file with a .XPI extension)
Open the file by clicking on the download icon and right-clicking on the file and choosing "Open containing folder".
I use free 7-Zip, so I just opened the archive with a double-click (Windows 10 asked what program I want to open the file with, chose 7z), that opened it like an Explorer window, drag and dropped the bootstrap.js file into the windows folder-directory window, edited the file and found and made the commented out line change (use whatever text editor you have), saved it, and then drag and dropped the file back into the archive window.
Removed the old version in the add-ons screen in Thunderbird, then just drag and dropped the modified ,.XPI file onto the Add-ons window and restarted Tb.

This review is for a previous version of the add-on (62.0). 

Rated 1 out of 5 stars

I attempted mrx2020's fix. I have the latest Thunderbird. When I went to the Add-Ons Manager and checked the page for Theme Font & Size Changer, it said "THUNDERBIRD USERS PLEASE SWITCH TO THE NEW THUNDERBIRD VERSION BY BELOW URL:
https://addons.mozilla.org/en-US/firefox/addon/theme-font-size-changer-for-tb/"
I went there, but it said "Not compatible with Firefox Quantum. This add-on is not available on your platform" and would not let me right click on "add to Firefox" to download the .xpi.
I smelled a typo, so I edited the URL to be https://addons.mozilla.org/en-US/thunderbird/addon/theme-font-size-changer-for-tb/ -- Extracting this, I did see bootstrap.js.
I edited bootstrap.js like the instructions said, NOTE! You have to comment out the lines with //, NOT ## like in HTML! then PeaZipped it (an xpi is just a zip file, you change the extension from .zip to .xpi) I literally did name it whatever.xpi. Then did an Install From File in Thunderbird and it appeared to install successfully. Yay! I then restarted Thunderbird. Be sure to delete the old, non-working Theme Font & Size Changer in Add-Ons after doing this.

If you don't use // for commenting out the lines, it will act like it installs just fine, but you won't be able to see it. Be sure to use // !!

NOTE: We users should not have had to do any of this.

This review is for a previous version of the add-on (62.0). 

Rated 1 out of 5 stars

Really? Date enforced shutdown? Fix it.

This review is for a previous version of the add-on (62.0). 

Rated 5 out of 5 stars

Thanks Mrx2020!!!!! This Plugin had an expiration date.

Old Post Below:
Theme / Size Toolbar stopped working 1/5/2018. I removed Fossamail, changed to thunderbird (was doing soon anyway bc of security), Removed Thunderbird. Restored From Backup Image, Installed Thunderbird on a Win10 VM and a Win8.1 VM, and the plugIN STILL didn't work. I don't understand how this plug-in is NOT working. I installed the older versions too. This plugin somehow requires something I don't know about to operate. Something NOT on the actual machine UNLESS it shares files with Firefox. If anybody has a fix pLEESE email me before I go blind. [email protected] Thanks!

This review is for a previous version of the add-on (62.0). 

Rated 4 out of 5 stars

Many thanks mrx2020, HackerKitty, P. Maigron !
I hate this matter of font size... You're a blessing...

With macOS Sierra, it works fine, using The Unarchiver and TextEdit (for correction //)

This review is for a previous version of the add-on (62.0). 

Rated 4 out of 5 stars

(5 jan 2018)
Thanks to mrx2020 for identifying the issue and giving the fix, it works perfectly!
I used 7zip for steps 2 to 6 (open archive, select file bootstrap.js, edit, add // in front of the given line and save inside the same xpi file).
The constant "build" is set to 1507391194 at the beginning of the file, which corresponds to 7 oct 2017 17:46:34 (last build time probably).
The test in this line makes the install fail 90 days afterwards (3*30), which is today 5 jan 2018!
I can hardly understand the presence of such a test in the code...

This review is for a previous version of the add-on (62.0). 

Rated 2 out of 5 stars

Thanks to the detailed instruction by mrx2020, I managed to make this indispensable add-on working again. The trick is to compress the files within the folder not compressing the folder itself. Took me sometime to figured this out. Also the comment out is done with // (double back slash) not # (like in bash).

This review is for a previous version of the add-on (62.0).