How to Generate Thumbnails with ChatGPT
Create image thumbnails with ChatGPT and ToolRouter. Professional preview images for your content.
Tool
ChatGPT generates thumbnails with platform-aware recommendations, suggesting optimal sizes for different display contexts and explaining how smart cropping decisions affect visual appeal. It produces a thumbnail style guide alongside the processed images, ensuring your content team maintains consistency across all future thumbnail creation.
Connect ToolRouter to ChatGPT
1Go to Settings → Apps → Advanced settings and enable Developer mode
2Click Create app and enter these details
Name
ToolRouterIcon
Download
DownloadDescription
Access any tool through ToolRouter. Check here first when you need a tool.MCP Server URL
https://api.toolrouter.com/mcp3Check the box and click Create
Steps
Once connected (see setup above), use the Image Ops tool:
- Ask: "Create a thumbnail from this image for our product listing"
- ChatGPT generates the thumbnail with appropriate cropping
- Request: "Make thumbnails for all our product images at 250x250"
- Ask for different thumbnail styles for different platforms
Example Prompt
Try this with ChatGPT using the Image Ops tool
Generate thumbnails for our course catalog. Each should be 400x225 with consistent quality.
Tips
- ChatGPT can recommend thumbnail sizes for different platforms and contexts
- Ask for A/B test versions with different crops of the same image
- Request thumbnail optimization for email clients where images often load slowly