Try the Commands Troubleshooting and Help page if you get stuff with server errors.
Minecraft Banner Command Creator
Online banner maker, generate a give comannd for custom banners and shields using this easy to use editor, complete with name, lore and options. With the above banner editor expand each layer to select the pattern and pattern color. The base color will generate the actual the item name in the command output.
Setblock banner: Select setblock if you want to place the banner in world, don't forget to set rotation under the Block tab.
Shield patterns: Use the banner maker as a shield pattern maker, select shield and you can generate a give shield commands.
How do I make banners with more than 6 layers
Commands are the only way to make a banner with more than 6 layers. If you struggle with all that typing use the banner creation tool above to select you patterns and then copy/paste the output into Minecraft chat. For long commands you may need to use a command block due to chat length limitations.
Minecraft Version Notes
1.14 Java minecraft give command
The Loom block was added and replaces the dye pattern. The new loom makes banners patterns a lot easier to apply. Illager banners were also added to world generation, see other banners for the pattern.
1.13 Java minecraft give command
Banner color ids change as part of the The Flattening.
1.12 Java minecraft give command
Banners were added in Minecraft 1.8, they could be applied to shields in Minecraft 1.11
Suggestions or found a bugLeave me a comment/like on:
addedLoader internal changes
addedUser save data
addedSnout Piglin banner pattern (credit: reddit/sharkey300)
patchBanner letters and numbers no longer updating color on selection
addedGive command UX upgrade
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(8 More Updates)