---
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/openclaw
---
# How to Generate Thumbnails with OpenClaw

OpenClaw automates thumbnail generation at scale, processing hundreds of source images into consistent thumbnails with smart cropping in a single batch. Output includes multiple thumbnail sizes per source, organized by resolution, with metadata tracking crop coordinates and source file references for complete traceability.

## Setup

openclaw mcp add toolrouter -- npx -y toolrouter-mcp

## Steps

1. Connect ToolRouter: openclaw mcp add toolrouter -- npx -y toolrouter-mcp
2. Ask OpenClaw: "Generate a thumbnail from this image at 300x300"
3. OpenClaw creates the thumbnail with appropriate cropping
4. Review and request adjustments to the crop if needed
5. Batch-generate thumbnails for your entire content library

## Example Prompt

```
Generate 250x250 square thumbnails for our product catalog images.
```

## Tips

- Standardize thumbnail dimensions across your entire platform
- Test thumbnails at their actual display size to ensure they look good small
- Generate both retina and standard resolution thumbnails for high-DPI devices
