---
title: ToolRouter — Use Case
description: Step-by-step guide for a real-world ToolRouter use case with agent-specific instructions.
url: https://toolrouter.com/tools/image-ops/use-cases/batch-resize-images
---
# Batch Resize Images

Consistent image dimensions are essential for professional-looking websites, app interfaces, and marketing materials. When images come from different sources -- user uploads, stock photos, screenshots, product photography -- they arrive in random sizes and aspect ratios. Manually resizing each one in an image editor is tedious and error-prone.

ToolRouter's transform_image skill handles resizing programmatically, letting you specify exact width, height, or aspect ratio constraints. You can resize to exact dimensions, scale proportionally, or fit within a bounding box while preserving the original aspect ratio. The tool handles common edge cases like upscaling prevention and smart cropping.

This is essential for any workflow where images need to meet specific size requirements: e-commerce product grids, blog post hero images, social media assets, email templates, and mobile app screens. Instead of processing images one at a time in Photoshop, you describe the target dimensions and let the tool handle the rest.

**Tool:** [Image Ops](https://toolrouter.com/tools/image-ops)
**Skills:** transform_image

## Agent Guides

- [How to Batch Resize Images with Claude](https://toolrouter.com/tools/image-ops/use-cases/batch-resize-images/claude): Guide for Claude
- [How to Batch Resize Images with ChatGPT](https://toolrouter.com/tools/image-ops/use-cases/batch-resize-images/chatgpt): Guide for ChatGPT
- [How to Batch Resize Images with Copilot](https://toolrouter.com/tools/image-ops/use-cases/batch-resize-images/copilot): Guide for Copilot
- [How to Batch Resize Images with OpenClaw](https://toolrouter.com/tools/image-ops/use-cases/batch-resize-images/openclaw): Guide for OpenClaw
