Featured Image Creator AI

Auto-generate stunning AI-powered featured images using OpenAI (DALL-E 3, GPT-4), Google Gemini, or Stability AI. Style presets, text/logo overlays, image variations, auto alt text, social/Open Graph sizes, bulk generation, scheduling, and multiple formats.

Features

🎨 Multiple AI Providers - Support for OpenAI (DALL-E 3, GPT models), Google Gemini, and Stability AI (Stable Diffusion 3, SeeDream)
🖌️ Style Presets (new in 1.1.0) - One-click looks: Photographic, Flat Illustration, Digital Art, 3D Render, Watercolor, Minimal, Isometric, Cyberpunk, Paper-cut, Corporate, Retro
🏷️ Text & Logo Overlay (new in 1.1.0) - Burn an auto-wrapped headline and/or logo/watermark onto the image (Imagick/GD + bundled Poppins font)
🔀 Image Variations (new in 1.1.0) - Generate several options and pick your favorite from a grid; unchosen images are auto-removed
♿ Auto Alt Text (new in 1.1.0) - Describe the generated image with the provider's vision model for SEO + accessibility (title fallback)
📣 Social & Open Graph Images (new in 1.1.0) - Create Facebook/OG (1200×630), Twitter, square and Pinterest sizes from one image (local crop, no extra API cost); auto-sets the OG image for Yoast / Rank Math
🔑 Bring Your Own API Key - Complete control and transparency over API usage
⚡ Single & Batch Generation - Generate images one at a time, or bulk regenerate your entire library
🎚️ Image Quality Control - Choose between Standard, HD, or Low quality generation (OpenAI)
🖼️ Multiple Formats - Support for PNG, JPG, and WEBP (All Providers)
🎯 Customizable Prompts - Tailor the image generation to your brand
🔒 Secure - API keys are encrypted before storage
📏 Flexible Dimensions - Configure image size (default: 1024x675px)
✅ WordPress Standards - Built following WordPress.org coding standards

Supported Models & Options

Provider	Models	Quality Options	Output Formats
OpenAI	DALL-E 3, GPT Image 1, GPT Image 1 (Mini), GPT Image 1.5, GPT Image Latest	Standard, HD, Low	PNG, JPG, WEBP (Auto-converted)
Stability AI	Stable Diffusion 3, SeeDream 4.5	N/A	PNG, JPG, WEBP (Native)
Google Gemini	Imagen 3.0	N/A	PNG

Auto Alt Text uses a vision model where available — OpenAI (gpt-4o-mini) and Gemini describe the image; Stability AI falls back to the post title.

Installation

From WordPress.org (Recommended)

Go to Plugins > Add New in your WordPress admin
Search for "AI Featured Image Generator"
Click Install Now and then Activate

Manual Installation

Download the latest release from GitHub Releases
Upload the plugin folder to /wp-content/plugins/
Activate the plugin through the Plugins menu in WordPress

From Source

git clone https://github.com/gunjanjaswal/Featured-Image-Creator-AI.git
cd Featured-Image-Creator-AI
# Copy to your WordPress plugins directory
cp -r . /path/to/wordpress/wp-content/plugins/featured-image-creator-ai/

Configuration

Navigate to Settings > AI Featured Images
Select your preferred AI provider
Get your API key:
- OpenAI: OpenAI Platform
- Google Gemini: Google AI Studio
- Stability AI: Stability AI Platform
Enter your API key and save
(Optional) Customize the prompt template
Start generating images!

Usage

Generate for Single Post

Edit any post
Look for the AI Featured Image meta box in the sidebar
Click Generate Featured Image
Wait for the image to be generated and automatically set

Bulk Generation

Method 1: Bulk Action

Go to Posts > All Posts
Select posts without featured images
Choose Generate Featured Images from bulk actions
Click Apply

Method 2: Dedicated Page

Go to Tools > AI Featured Images
View the count of posts without featured images
Click Generate All Featured Images
Monitor the progress as images are generated

Styles

Set a default look under Settings > AI Enhancements (Photographic, Flat Illustration, Watercolor, Cyberpunk, and more). Override it per image from the Style dropdown in the post editor — no prompt engineering needed.

Text & Logo Overlay

Enable Settings > Text & Logo Overlay to burn the post title (and your logo) onto every image. Configure font weight, size, color, vertical position, a readability scrim, and a logo/watermark corner. Use {title} in the headline text for the post title. Rendering is local (Imagick or GD) — no extra API cost.

Variations

In the post editor, click Generate Options to create several images at once and pick your favorite from the grid. Unchosen images are removed automatically. The number of options (2–8) is set under Settings > AI Enhancements. Each option uses one API credit.

Auto Alt Text

Enable Settings > AI Enhancements > Auto Alt Text to describe each generated image with the provider's vision model (OpenAI gpt-4o-mini / Gemini) and save it as the image's alt text. Stability AI falls back to the post title.

Social & Open Graph Images

Enable Settings > Social & Open Graph Images and tick the sizes you want (Open Graph 1200×630, Twitter, square, Pinterest). Each generated image is cropped locally into those sizes and added to the media library — no extra API credits. With Open Graph Image enabled, the share image is set for Yoast SEO / Rank Math, or output as og:image / twitter:image tags when no SEO plugin is active.

API Costs

This plugin supports multiple AI providers. Pricing varies:

OpenAI DALL-E 3

Standard Quality: ~$0.04 per image (1024x1024)
HD Quality: ~$0.08 per image (1024x1024)
Current Pricing

Google Gemini (Imagen)

Check Google AI Studio for current pricing
Free tier available with limitations

Stability AI (Stable Diffusion 3)

~$0.04 per image
Current Pricing

The plugin uses standard quality by default for all providers.

Requirements

WordPress 5.8 or higher
PHP 7.4 or higher
API key from your chosen provider (OpenAI, Google Gemini, or Stability AI)
openssl PHP extension (for API key encryption)
imagick or gd PHP extension (only needed for the optional Text & Logo Overlay)

File Structure

ai-featured-image-generator/
├── ai-featured-image-generator.php  # Main plugin file
├── includes/
│   ├── class-admin-notices.php      # Admin notification system
│   ├── class-bulk-generator.php     # Batch processing
│   ├── class-image-generator.php    # Core image generation + variations + alt text
│   ├── class-image-overlay.php      # Text/logo overlay engine (Imagick/GD)
│   ├── class-social-variants.php    # Social / Open Graph sized variants
│   ├── class-styles.php             # Visual style presets
│   ├── class-whats-new.php          # "What's New" on-update notice
│   ├── class-post-meta-box.php      # Post editor integration
│   ├── class-security.php           # Security utilities
│   ├── class-settings.php           # Settings page
│   └── api/
│       ├── class-api-interface.php     # API provider interface (+ vision contract)
│       ├── class-openai-provider.php   # OpenAI DALL-E 3 / GPT Image / vision
│       ├── class-gemini-provider.php   # Google Gemini (Imagen) / vision
│       └── class-stability-provider.php # Stability AI (SD3)
├── assets/
│   ├── css/
│   │   └── admin.css                # Admin styles
│   ├── js/
│   │   └── admin.js                 # Admin JavaScript
│   └── fonts/
│       ├── Poppins-Bold.ttf         # Bundled overlay fonts (SIL OFL)
│       ├── Poppins-SemiBold.ttf
│       ├── Poppins-Regular.ttf
│       └── OFL.txt                  # Font license
├── readme.txt                        # WordPress.org readme
└── README.md                         # This file

Hooks & Filters

Filters

// Modify the prompt before sending to API
add_filter('aifig_image_prompt', function($prompt, $post_id) {
    // Your custom logic
    return $prompt;
}, 10, 2);

// Modify image dimensions
add_filter('aifig_image_dimensions', function($dimensions) {
    return array('width' => 1200, 'height' => 800);
});

// --- Added in 1.1.0 ---

// Add or change style presets (key => ['label' => ..., 'suffix' => ...])
add_filter('aifig_style_presets', function($presets) {
    $presets['my_brand'] = array(
        'label'  => 'My Brand Look',
        'suffix' => 'Bold brand colors, clean layout, on-brand illustration style.',
    );
    return $presets;
});

// Choose the vision models used for Auto Alt Text
add_filter('aifig_openai_vision_model', fn() => 'gpt-4o-mini');
add_filter('aifig_gemini_vision_model', fn() => 'gemini-2.0-flash');

// Add or change social / Open Graph sizes (key => ['label', 'width', 'height'])
add_filter('aifig_social_variants', function($specs) {
    $specs['story'] = array('label' => 'Story (1080×1920)', 'width' => 1080, 'height' => 1920);
    return $specs;
});

Actions

// After image is generated
add_action('aifig_image_generated', function($attachment_id, $post_id) {
    // Your custom logic
}, 10, 2);

// Before batch generation starts
add_action('aifig_batch_start', function($post_ids) {
    // Your custom logic
});

Development

Setting Up Development Environment

# Clone the repository
git clone https://github.com/gunjanjaswal/Featured-Image-Creator-AI.git
cd Featured-Image-Creator-AI

# Create a symlink to your WordPress plugins directory
ln -s $(pwd) /path/to/wordpress/wp-content/plugins/featured-image-creator-ai

Coding Standards

This plugin follows WordPress Coding Standards.

# Install PHP_CodeSniffer
composer global require "squizlabs/php_codesniffer=*"

# Check coding standards
phpcs --standard=WordPress .

# Auto-fix issues
phpcbf --standard=WordPress .

Security

API keys are encrypted using AES-256-CBC before storage
All user inputs are sanitized and validated
Nonce verification on all AJAX requests
Capability checks on all admin actions
Prepared statements for database queries

Privacy

This plugin sends post titles to your chosen AI provider's API to generate images. Please review:

OpenAI

Google Gemini

Stability AI

When Auto Alt Text is enabled (off by default), the generated image is additionally sent to the provider's vision model to produce a description. The text/logo overlay and the social/Open Graph crops are processed locally on your server — no image data leaves your site for those steps. No other data is sent to external services. API keys are stored encrypted in your WordPress database.

Contributing

Contributions are welcome! Please:

Fork the repository
Create a feature branch (git checkout -b feature/amazing-feature)
Commit your changes (git commit -m 'Add amazing feature')
Push to the branch (git push origin feature/amazing-feature)
Open a Pull Request

Support

WordPress.org Support Forum: Plugin Support
GitHub Issues: Report a Bug
Email: hello@gunjanjaswal.me

If you find this plugin helpful, consider supporting on Ko-fi to back the development.

License

This plugin is licensed under the GPL v2 or later.

Featured Image Creator AI
Copyright (C) 2024  Gunjan Jaswal

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

Credits

Developed by Gunjan Jaswal
Powered by:

Changelog

1.1.1

Fixed an OpenAI HTTP 400: Invalid value: 'standard' error when generating with the GPT Image models. Quality is now normalized per model in AIFIG_OpenAI_Provider: DALL-E 3 accepts standard/hd, while GPT Image models accept low/medium/high/auto (standard → medium, hd → high).

1.1.0

Style presets: one-click looks (Photographic, Flat Illustration, Digital Art, 3D Render, Watercolor, Minimal, Isometric, Cyberpunk, Paper-cut, Corporate, Retro) as a site default or per-post override. Extendable via the aifig_style_presets filter. New AIFIG_Styles class.
Text & logo overlay: burn an auto-wrapped headline (the post title by default) and/or a logo/watermark onto generated images — configurable font weight, size, color, position, readability scrim and logo corner. Rendered locally with Imagick or GD using a bundled Poppins (SIL OFL) font. New AIFIG_Image_Overlay class.
Image variations: generate multiple options at once from the editor and pick a favorite from a grid; unchosen images are deleted automatically. Count is configurable (2–8).
Auto alt text: optionally describe each generated image with the provider's vision model (OpenAI gpt-4o-mini / Gemini) and save it as the attachment alt text, with a post-title fallback for providers without vision. Models are filterable (aifig_openai_vision_model, aifig_gemini_vision_model).
Social & Open Graph images: generate Facebook/Open Graph (1200×630), Twitter/X (1200×675), square (1080×1080) and Pinterest (1000×1500) sizes from each generated image. Cropping is done locally — no extra API credits. Optionally sets the Open Graph share image for Yoast SEO and Rank Math, with an og:image / twitter:image fallback when no SEO plugin is active. Sizes are extendable via the aifig_social_variants filter. New AIFIG_Social_Variants class.
"How to use" guide: added to the settings screen and the documentation, covering styles, overlays, variations, alt text and social images.
"What's New" panel: shown once after the plugin is updated, summarizing the latest features. Dismissible per user and never shown on a fresh install. New AIFIG_Whats_New class.
Refactored the generator into reusable attachment/variation/alt-text steps shared by the single, bulk and scheduled-publish paths. Social variants are cleaned up and regenerated whenever the featured image changes.

1.0.6

WordPress 7.0 integration (real APIs, tested against D:\wamp64\www\wordpress7):
- Iframed editor: documented the meta-box-only integration. The meta box renders in the parent admin chrome (not the editor iframe), so no asset changes were required.
- AI Client API: added aifig_is_wp_ai_client_available() (uses core wp_supports_ai() + wp_ai_client_prompt()) and aifig_wp_ai_client_prompt() helpers. Routing through the core client is opt-in via the aifig_use_wp_ai_client filter; bundled OpenAI / Gemini / Stability providers remain the default image-generation path.
- Connectors API: registers an ai_provider connector on the wp_connectors_init action so the encrypted aifig_api_key option surfaces on the central Connections screen alongside core's auto-discovered providers. Connector ID: aifig-image-generator. Falls back silently on WP 6.x.

1.0.5

Added draft_to_publish and pending_to_publish hooks for auto-generating featured images. Previously only future_to_publish was hooked, so images were only auto-generated for WordPress scheduled (future) posts. Now auto-generates featured images when posts transition from draft or pending to published (e.g., via custom auto-publish systems, bulk publishing, or manual publish).
Replaced raw error_log() calls in the scheduled-publish auto-generate flow with a new aifig_auto_generate_result action hook so site owners can log results themselves without bundling debug code in production.
Updated "Tested up to" to WordPress 7.0.
Replaced Buy Me a Coffee donation link with Ko-fi (https://ko-fi.com/gunjanjaswal).
Added "Contact Developer" link to plugin row meta on the Plugins screen.
Corrected GitHub repository slug in the Documentation row-meta link.

1.0.4

Fixed fatal error by requiring file.php before calling wp_tempnam() in OpenAI provider

1.0.3

Enable Output Format selection (PNG/JPG/WEBP) for OpenAI models (images are automatically converted)
Updated documentation with full list of supported models and options
Improved compatibility with GPT Image 1 (Mini)

1.0.2

Added new image generation models: GPT Image 1, GPT Image 1 (Mini), GPT Image 1.5, GPT Image Latest
Added SeaDream 4.5 support for Stability AI
Added image quality settings (Standard/HD/Low) and output format selection (PNG/JPG/WEBP)
Added Bulk Regeneration feature to regenerate images for all posts
Fixed image dimension error for custom models
Improved code quality and security (nonces, escaping)

1.0.1 (2026-01-10)

Added automatic featured image generation for scheduled posts
Fixed author name spelling
When a scheduled post is published without a featured image, one is automatically generated

1.0.0 (2024-12-26)

Initial release
OpenAI DALL-E 3 integration
Google Gemini (Imagen) integration
Stability AI (Stable Diffusion 3) integration
Single post image generation
Bulk generation for posts without featured images
Customizable prompt templates
Encrypted API key storage
WordPress.org standards compliance

Name		Name	Last commit message	Last commit date
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assets		assets
includes		includes
.gitignore		.gitignore
README.md		README.md
featured-image-creator-ai.php		featured-image-creator-ai.php
readme.txt		readme.txt

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