How to change the default loading icon in a Python flet app?

Question

I am building a graphical user interface using flet in python.

However, I am stuck with the default flet logo

while loading the app in the browser viewer, and I don't see any hints about changing it in the documentation.

Is this possible?

Answer 1

Create a folder in your root directory named assets.

Inside place your logo named favicon.png

Finally, point flet to your assets folder

flet.app(target=main, assets_dir="assets", view=flet.WEB_BROWSER)

Additionally, check here how to add your own manifest

UPDATE: Check this article if you want to make an executable with pyinstaller and add a custom icon. Previously, to do this, required some dirty tricks (replace the flet icon inside the .exe file).

It seems like now it's as easy as

flet pack your_program.py --icon <your-image.png>

link to the documentation

Answer 2

@Panos Stavrianos

It works and without even manifest.json file, but not with all ports.

With:

flet.app(target=main, assets_dir="assets", port=#####, view=flet.WEB_BROWSER)

on my box, my personal favicon strangely doesn't work when port is between 41556 and 41559.