# Image Resizer

This tool resizes images to custom dimensions, percentages, or social media presets.

## What image formats can I upload?

You can upload PNG, JPG, or WebP images.

## What resize modes are available?

- **Custom dimensions**: Enter a specific width and height in pixels.
- **Percentage**: Scale the image by a percentage (1%–500%).
- **Preset**: Choose from common social media sizes:
  - Instagram Post: 1080 × 1080
  - Facebook Cover: 820 × 312
  - Twitter Header: 1500 × 500
  - YouTube Thumbnail: 1280 × 720

## Can I maintain the aspect ratio?

Yes. Aspect ratio lock is on by default. When locked, changing one dimension auto-calculates the other. You can unlock it to stretch or squish the image freely.

## What output formats are available?

You can export as PNG, JPEG, or WebP. The default matches the input format.

## Can I control the output quality?

Yes. For JPEG and WebP output, a quality slider (1–100) lets you balance file size and visual quality. PNG output is always lossless.

## How do I use this tool?

1. Go to https://toolscanvas.com/tools/image-resizer
2. Upload an image using the file picker.
3. Choose a resize mode: Custom, Percentage, or Preset.
4. Adjust dimensions, percentage, or pick a preset.
5. Optionally change the output format and quality.
6. Click "Resize" to process the image.
7. Click "Download" to save the resized image.