Replace Minecraft titles with custom images. Create a resource pack with the images and you'll be able to display them to all players on your server. Go to ImageTitles Example for instructions on how to create a resource pack.
Download from www.curseforge.com or modrinth.com
ImageTitles1:
Footnotes
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This example was created with the ImageTitles Example resource pack. Using the command
/title @s title {"text":"imagetitles example"}. ↩