Minecraft 20w17a added support for custom colours in text, so books can now display images : r/Minecraft

Solved - How to use Custom Color in text components

Closing in - Minecraft 1.16 Pre-release 3 is out! : r/Minecraft

10000 best r/Minecraft images on Pholder

10000 best r/Minecraft images on Pholder

Java Edition 1.17/Development versions – Minecraft Wiki

Chat – Minecraft Wiki

Eureka 850023 Minecraft Deco Letter, Number

Minecraft 20w17a added support for custom colours in text, so

NEW SNAPSHOT 20w17a: Emoji, Fonts, Colors, Bastion Changes, and

Java Edition 1.18/Development versions – Minecraft Wiki

100 PICS Unofficial & Independent Minecraft Guide

Java Edition 1.13/Development versions – Minecraft Wiki

I figured out how to use custom fonts and a script to send images

Minecraft Data Mining

More Nether Tweaks Incoming - Snapshot 20w17a is out! : r/Minecraft