I made a brand poster builder for GPT-Image-2 using HTML | GPT-Image-2 | Image Generation AI | ChatGPT | Design | Brand Poster | #343

Update History

• Added Japanese version of the HTML builder: 4/24

• Added work examples: 5/7

• Revised Japanese version of the HTML builder: 5/7
  →Reflected how Kahota Tanashima uses it→ Expanded age range
  

OpenAI's new image generation model GPT-Image-2 (announced 4/21/2026).

Since it seems Japanese typography can be rendered with about 99% accuracy,
I made an HTML builder that allows you to assemble prompts for brand posters
using a form.

I'm distributing it, so please feel free to use it.

This is a rough article, so someone will surely write an explanation on how to use it.
I'm sure that's not what's expected of me.

I've added an instruction manual to the article.
Also, I updated it to v3 on 5/7.
The major features probably haven't changed, so please use whichever one you prefer.

What you can do

• Enter creator name, brand name, character settings, and brand theme

• A prompt for GPT-Image-2 is automatically generated on the right

• Just copy and paste it into ChatGPT (with image generation ON),
  and it will output a poster image

How to use

1. Download the HTML and open it in your browser

2. Use the "Load Sample" button to insert a sample and check the behavior

3. Replace it with your own information

4. Copy the prompt using "Copy" on the right

5. Paste into ChatGPT → Image appears

That's it.

A quick note

• Select brand theme, tone, and colors using chips.
  3 to 6 of each provides a good balance.

• You can save and restore data to localStorage using the browser save button.

• The manual is also included in the HTML, so you can use it even if it's your first time.

Examples of work

Please take a look at what creators who have used it have made to see what is possible.
I would be happy if you used it as a reference for your own icons.

Huh? Are you trying to dye it in the KITAcore style?
If that happens, I'll be terrified...

▼ Click here if you have trouble using it.

Distribution

I have attached the HTML file to the end of this article.
Just download it and open it in your browser.

Free.

Modification and redistribution are also OK (I would appreciate it if you kept the KITAcore credit).

▼ First edition

▼ Japanese version

▼ Manual

▼ Japanese version v3

▼ Manual: v3

Well then, see you later.

▼Click the image to check the weekly ranking.

▼KITAcore's note status is now public: click the image to see the details.

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