[GNC] How Do I Increase Font Size

Wed Jan 7 16:19:30 EST 2026

Hi, fellow Linux user (PCLinuxOS here: Love it!)
First, enable view of hidden files in file browser ie the .xxx files.
 Then there are 2 ways to sort this: Globally for everything: in which case 
you can change the global desktop fonts (I use Mate, & font is changed by 
System Preferences>Appearance>Fonts, then set as desired. Other 
Desktop managers are handled in a similar way.
 If you only wish to change font in Gnucash: You can follow the instructions in the Gnucash Wiki:
(extract)
Via settings.ini
Create if necessary and add the following line to GTK_CONFIG_HOME/settings.ini:

[Settings]
gtk-font-name=Arial 14
(end)
in my case the file was in (HOME)/.config/gtk-3.0/settings.ini
nb: I use Midnight Commander to look & edit these types of jobs. I actually used font size 16.
Gnucash recently changed to gtk 3.0, & you will need to look for the config file. 
 I found all this info by Googling, so I feel it is important to try a bit of Googling first! 
 It seems the Linux community is a bit behind updating the tools to change screen Scaling particularly 
with huge high definition displays. It will happen but until then one needs to adapt.
 Please! Don´t give up! There are people here to help, but also one needs to help themselves (Google is yr friend too). 
The developers of Gnucash, & Linux developers generally are fantastic! Please do not go back to the dark side (TIC)!

On Wed, 7 Jan 2026 10:55:04 -0600
"Jerry Criswell (JC)" <jcriswell58 at gmail.com> wrote:

> Sorry.  I've used Linux Mint for so long I forget to mention it 
> sometimes.  I have been unable to change the font size even though I 
> messed with it for over an hour.  I'm going to go ahead and start 
> GnuCash as of the first of the year, but there is a 75% chance I won't 
> continue with it due to the font problem.  Nobody wants to climb up on 
> the desk to read a monitor.
> 
> JC
> 
> 
> On 1/7/26 6:43 AM, Joseph St. Denis wrote:
> > I have windows 11 and just used the global command to increase the 
> > size of the display on all of programs that I use. You just have to 
> > display settings and increase the size. I selected 125 % 150% was to 
> > big for the existing column for the date. You go to display and change 
> > the display settings open gnucash and any other programs you use to 
> > see if you are happy with the results. If other people use your 
> > computer then they can change the settings to suit them.
> >
> > All the best
> >
> > Joseph St Denis
> >
> > Yahoo Mail: Search, Organize, Conquer 
> > <https://mail.onelink.me/107872968?pid=nativeplacement&c=US_Acquisition_YMktg_315_SearchOrgConquer_EmailSignature&af_sub1=Acquisition&af_sub2=US_YMktg&af_sub3=&af_sub4=100002039&af_sub5=C01_Email_Static_&af_ios_store_cpp=0c38e4b0-a27e-40f9-a211-f4e2de32ab91&af_android_url=https://play.google.com/store/apps/details?id=com.yahoo.mobile.client.android.mail&listing=search_organize_conquer>
> >
> >     On Wed, Jan 7, 2026 at 4:11 AM, Tom Route36
> >     <tom.route36 at gmail.com> wrote:
> >     Hi Jerry,
> >
> >     You didn't say what operating system you have; but I'll assume it's
> >     probably Windows.  (Let me know if that's not right.)  So assuming
> >     Windows, here's what I think should work for you.
> >
> >     1.  Exit and close GnuCash.
> >     2.  Open Windows File Explorer.
> >     3.  At the top center of the File Explorer window, backspace over
> >     whatever is currently there to erase it.
> >     4.  In that same erased space, type in the following:
> >     %APPDATA%\GnuCash
> >     5.  That should open the proper folder location with sub-folders
> >     named:
> >     books, checks, translog.
> >
> >     IMPORTANT:  If you don't see those sub-folders, STOP; since you're
> >     probably in the wrong location.
> >     But assuming you do see those folders, continue on.
> >
> >     6.  In that folder location (%APPDATA%\GnuCash), look for a file
> >     named:
> >     gtk-3.0.css
> >     7a.  If you see that file there, you'll need to edit it.
> >     7b.  If you don't see that file there, you'll need to create it.
> >     8.  Whether you edit it or create it, gtk-3.0.css is or will be a
> >     plain
> >     text file.
> >     9.  The text that you need to have in that file is as follows (as
> >     shown
> >     here in the following 3 lines):
> >     * {
> >       font: 14pt arial, sans-serif;
> >     }
> >     10.  Once you've edited or created that file with the above 3
> >     lines in
> >     it, save the file.
> >     11.  Make sure the saved file has the name "gtk-3.0.css", and that
> >     there's no added .txt after .css.
> >     12.  Once that's done, go ahead and re-open GnuCash.
> >     13.  You should now hopefully see that the GnuCash font size is
> >     larger.
> >
> >     NOTE:  If the font size is larger but still isn't large enough,
> >     you can
> >     make it even larger.
> >     Go thru the same procedure again.  But in step 9, change the font
> >     size
> >     to a larger number.
> >     For example, change "14pt" to "16pt".  I guarantee that will be
> >     pretty
> >     large even for older eyes.
> >
> >     Let me know if this procedure works for you, or if you run into any
> >     problems.
> >
> >     Tom
> >
> >
> >
> >     On 1/5/2026 4:53 PM, Jerry Criswell (JC) wrote:  
> >     > How do I increase font size in all of GnuCash? When you're 86  
> >     yrs old  
> >     > you need all the help you can get.
> >     >
> >     > JC
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