Hi @AzaharoddinSk ,
Base on my research, we can't include a log image in a JSON theme file. However, you can follow the solution in the following threads which has the same problem as yours to achieve the similar function...
Workaround 1. Convert your image to a base64 file and then add it to JOSN theme file
Try to translate the image to base64 file, use a free online converter to convert the images to Base64 files.
Then add the code.
The following website can translate the image to base64.
Base64 Image Encoder (base64-image.de)
And you can refer to the following video.
Power Bi : Set image as permanent background for all pages - Bing video
Workaround 2. Convert the image to an SVG file and then add it to JOSN theme file
Ok, I got it! https://onlineimagetools.com/convert-image-to-data-uri
Using the resulting code allowed me to have a custom icon in my custom PBI theme. Sweet victory :0)
Thank you for your help - looking for svg converters is what allowed the solution to pop up.
Best Regards
