How to increase a UI font size?

[EmilyGraceSeville7cf]

Hi! The font size is pretty small on Ubuntu 22.04.4 LTS x86_64:

How to make it larger?

[davidjgraph]

Insert a shape and increase the font size of the text on the shape.

[EmilyGraceSeville7cf]

Insert a shape and increase the font size of the text on the shape.

It will change the font size on the shape, not for Draw.io menus AFAIK.

[davidjgraph]

OK, so you mean the font size of the UI. The font size is likely your system font size.

There is a -z application parameter that takes a float (e.g. -z 1.4) that scales the whole UI.

[EmilyGraceSeville7cf]

I've tried to use -z {{value}} but it failed to work in my case for some reason with this error messages:

Gtk-Message: 22:38:24.715: Failed to load module "xapp-gtk3-module"
Gtk-Message: 22:38:24.715: Failed to load module "appmenu-gtk-module"

(drawio:17770): Gtk-WARNING **: 22:38:24.723: Theme parsing error: gtk.css:1422:23: 'font-feature-settings' is not a valid property name

(drawio:17770): Gtk-WARNING **: 22:38:24.725: Theme parsing error: gtk.css:3308:25: 'font-feature-settings' is not a valid property name

(drawio:17770): Gtk-WARNING **: 22:38:24.726: Theme parsing error: gtk.css:3770:23: 'font-feature-settings' is not a valid property name
libGL error: MESA-LOADER: failed to open iris (search paths /snap/drawio/218/gnome-platform/usr/lib/x86_64-linux-gnu/dri)
libGL error: failed to load driver: iris
libGL error: MESA-LOADER: failed to open iris (search paths /snap/drawio/218/gnome-platform/usr/lib/x86_64-linux-gnu/dri)
libGL error: failed to load driver: iris
libGL error: MESA-LOADER: failed to open swrast (search paths /snap/drawio/218/gnome-platform/usr/lib/x86_64-linux-gnu/dri)
libGL error: failed to load driver: swrast
[17851:0622/223824.810284:ERROR:angle_platform_impl.cc(44)] Display.cpp:1086 (initialize): ANGLE Display::initialize error 12289: Could not create a backing OpenGL context.
ERR: Display.cpp:1086 (initialize): ANGLE Display::initialize error 12289: Could not create a backing OpenGL context.
[17851:0622/223824.810399:ERROR:gl_display.cc(515)] EGL Driver message (Critical) eglInitialize: Could not create a backing OpenGL context.
[17851:0622/223824.810431:ERROR:gl_display.cc(786)] eglInitialize OpenGL failed with error EGL_NOT_INITIALIZED, trying next display type
[17851:0622/223824.814225:ERROR:angle_platform_impl.cc(44)] Display.cpp:1086 (initialize): ANGLE Display::initialize error 12289: Could not create a backing OpenGL context.
ERR: Display.cpp:1086 (initialize): ANGLE Display::initialize error 12289: Could not create a backing OpenGL context.
[17851:0622/223824.814399:ERROR:gl_display.cc(515)] EGL Driver message (Critical) eglInitialize: Could not create a backing OpenGL context.
[17851:0622/223824.814480:ERROR:gl_display.cc(786)] eglInitialize OpenGLES failed with error EGL_NOT_INITIALIZED
[17851:0622/223824.814532:ERROR:gl_display.cc(820)] Initialization of all EGL display types failed.
[17851:0622/223824.814589:ERROR:gl_ozone_egl.cc(26)] GLDisplayEGL::Initialize failed.
[17851:0622/223824.824922:ERROR:angle_platform_impl.cc(44)] Display.cpp:1086 (initialize): ANGLE Display::initialize error 12289: Could not create a backing OpenGL context.
ERR: Display.cpp:1086 (initialize): ANGLE Display::initialize error 12289: Could not create a backing OpenGL context.
[17851:0622/223824.825567:ERROR:gl_display.cc(515)] EGL Driver message (Critical) eglInitialize: Could not create a backing OpenGL context.
[17851:0622/223824.825615:ERROR:gl_display.cc(786)] eglInitialize OpenGL failed with error EGL_NOT_INITIALIZED, trying next display type
[17851:0622/223824.827744:ERROR:angle_platform_impl.cc(44)] Display.cpp:1086 (initialize): ANGLE Display::initialize error 12289: Could not create a backing OpenGL context.
ERR: Display.cpp:1086 (initialize): ANGLE Display::initialize error 12289: Could not create a backing OpenGL context.
[17851:0622/223824.827798:ERROR:gl_display.cc(515)] EGL Driver message (Critical) eglInitialize: Could not create a backing OpenGL context.
[17851:0622/223824.827828:ERROR:gl_display.cc(786)] eglInitialize OpenGLES failed with error EGL_NOT_INITIALIZED
[17851:0622/223824.827855:ERROR:gl_display.cc(820)] Initialization of all EGL display types failed.
[17851:0622/223824.827880:ERROR:gl_ozone_egl.cc(26)] GLDisplayEGL::Initialize failed.
[17851:0622/223824.829756:ERROR:viz_main_impl.cc(198)] Exiting GPU process due to errors during initialization

(drawio:17770): Gtk-WARNING **: 22:38:24.896: Theme parsing error: gtk.css:1422:23: 'font-feature-settings' is not a valid property name

(drawio:17770): Gtk-WARNING **: 22:38:24.899: Theme parsing error: gtk.css:3308:25: 'font-feature-settings' is not a valid property name

(drawio:17770): Gtk-WARNING **: 22:38:24.900: Theme parsing error: gtk.css:3770:23: 'font-feature-settings' is not a valid property name

[alderg]

Try Help > Zoom in (desktop v24.6.1):

[wjn]

UI font size not the font size in the diagram. Having the same issue in Ubuntu 24.