---
title: ToolRouter — Agent Use Case Guide
description: Step-by-step guide for completing a task with a specific AI agent using ToolRouter.
url: https://toolrouter.com/tools/image-ops/use-cases/generate-thumbnails/claude
---
# How to Generate Thumbnails with Claude

Claude makes thumbnail generation a conversational terminal workflow. Describe your thumbnail needs and content type, and Claude asks about cropping preferences, aspect ratios, and whether certain image regions should be prioritized. Review results on a test batch and provide feedback like "crop tighter on the product" before processing your full library.

## Setup

claude mcp add toolrouter -- npx -y toolrouter-mcp

## Steps

1. Connect ToolRouter: claude mcp add toolrouter -- npx -y toolrouter-mcp
2. Ask Claude: "Generate a 300x200 thumbnail from this image using image-ops"
3. Claude creates the thumbnail with smart cropping using transform_image
4. Review the crop and ask for adjustments if the wrong area was focused
5. Batch-generate thumbnails for your entire image library

## Example Prompt

```
Generate 300x200 thumbnails from all our blog hero images. Use smart cropping to keep the most interesting part of each image.
```

## Tips

- Ask Claude to generate thumbnails at multiple sizes -- small, medium, and large
- Request center-crop, top-crop, or smart-crop based on your content type
- Claude can generate both square and rectangular thumbnails from the same source
