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Package imager
Short Description Adding images from Gemini with Nano Banana
License GPL-2.0-or-later
Homepage https://github.com/in2code-de/imager
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Informations about the package imager
Imager - AI generated images in TYPO3 with Google Gemini (Nano Banana)
Table of Contents
- Introduction
- Google Gemini with Nano Banana
- Installation
- Extendability
- Custom LLM Integration
- Changelog and breaking changes
- Contribution with ddev
Introduction
This allows editors to generate AI-generated images directly in the TYPO3 backend. This works using Google Gemini (with Nano Banana).
Example photo from Gemini:
Example backend integration:
Example graphic in frontend:
Google Gemini with Nano Banana
- To use the extension, you need a Google Gemini API key. You can register for one at https://aistudio.google.com/app/api-keys.
- Look at https://ai.google.dev/gemini-api/docs/image-generation?hl=de#rest_22 for example prompts and to learn more about the power of Gemini image creation
- Alternatively, you can implement your own LLM provider (see Custom LLM Integration below).
Installation
After that, you have to set some initial configuration in Extension Manager configuration:
| Title | Default value | Description |
|---|---|---|
| promptPlaceholder | LLL:EXT:imager/Resources/Private/Language/Backend/locallang.xlf:prompt.placeholder | LLL path to a label for placeholder for prompt field in backend |
| promptValue | LLL:EXT:imager/Resources/Private/Language/Backend/locallang.xlf:prompt.value | LLL path for a default value for prompt field in backend |
| promptPrefix | - | Prefix text that should be always added to the prompt at the beginning |
| combinedIdentifier | 1:/_imager/ | Define where to store new ai generated images |
| aspectRatio | 16:9 | Default ratio for new ai images. Must be one of this values: 1:1, 2:3, 3:2, 3:4, 4:3, 4:5, 5:4, 9:16, 16:9, 21:9 |
| geminiModel | - | Gemini model. If empty the default model gemini-3-pro-image:generateContent is used. Add a specific model or use the GOOGLE_GEMINI_MODEL environment variable instead |
| apiKey | - | Google Gemini API key. You can let this value empty and simply use ENV_VAR "GOOGLE_API_KEY" instead if you want to use CI pipelines for this setting |
Note: It's recommended to use ENV vars for in2code/imager instead of saving the API-Key in Extension Manager configuration
Extendability
There are some events in EXT:imager that can be used to
- Decide to hide the button in backend (\In2code\Imager\Events\ButtonAllowedEvent::class)
- Manipulate or overrule the template of the rendered button in backend (\In2code\Imager\Events\TemplateButtonEvent::class)
- Manipulte the URL and request values before sending to Gemini (\In2code\Imager\Events\BeforeRequestEvent::class)
Custom LLM Integration (like DALL-E, Stable Diffusion, Midjourney, etc.)
Imager uses a factory pattern to allow custom LLM providers. By default, it uses Google Gemini, but you can easily integrate other AI services (OpenAI DALL-E, Stable Diffusion, Midjourney, etc.).
Implementing a Custom LLM Repository
-
Create a custom repository class implementing
RepositoryInterface- see example for OpenAI DALL-E: -
Register your custom repository in
ext_localconf.php: - Don't forget to:
- Register your Repository in your
Services.yaml - Set the required API key (e.g.,
OPENAI_API_KEYenvironment variable) - Flush TYPO3 caches after registration
- Register your Repository in your
Hint: The AbstractRepository base class provides methods for file storage, folder management,
and temporary file handling, so you only need to implement the image generation logic specific to your LLM provider.
Changelog and breaking changes
| Version | Date | State | Description |
|---|---|---|---|
| 2.1.0 | 2026-07-05 | Feature | Make model overwritable via extension configuration or ENV variable |
| 2.0.1 | 2026-02-02 | Task | Add funding section to composer.json file |
| 2.0.0 | 2026-01-01 | Feature | Support overruling of LlmRepository with a custom repository |
| 1.4.0 | 2025-12-07 | Feature | Support TYPO3 14 |
| 1.3.0 | 2025-12-04 | Feature | Add ddev as local environment |
| 1.2.0 | 2025-11-29 | Feature | Add event to manipulate the rendered button in the backend |
| 1.1.0 | 2025-11-27 | Task | Add extension icon |
| 1.0.0 | 2025-11-27 | Task | Initial release of in2code/imager |
Contribution with ddev
This repository provides a DDEV-backed development environment. If DDEV is installed, simply run the following commands to quickly set up a local environment with example usages:
ddev startddev initialize
Backend Login:
Installation hint:
- Install ddev before, see: https://ddev.readthedocs.io/en/stable/#installation
- Install git-lfs before, see: https://git-lfs.github.com/
- You can add the gemini API key in
.ddev/.env:
