Beginner Guide to Resize Image

Resize images to exact dimensions for websites, marketplaces, and social posts. This post explains practical ways to resize images online with predictable quality and reliable output.

What this tool is best for

• Marketplace listing image standards
• Social media campaign formats
• Website hero and thumbnail preparation

Step-by-step workflow

1. Upload an image file.
2. Set width and height values with or without aspect lock.
3. Resize and download the new image file.

Recommended starting settings

• Keep aspect ratio enabled when you want natural proportions.
• Disable aspect ratio only for strict fixed-dimension layouts.
• Adjust JPG or WebP quality when balancing file size and detail.

Quality control before download

• Check readability at 100% zoom.
• Confirm the final file size fits your destination platform.
• Keep an original backup copy in case you need a different export.

Related tools

• Compress Image
• JPG to PDF

Use this tool

• Resize Image
• All tools