Image Resizer Tool

Batch upload images and resize them with custom width, height, scale ratio and other parameters

1 uses | 5.0 rating

Image Resize Settings

Resize Method

Specify Width & Height Scale by Percentage Specify Width Only

Width (pixels)

Height (pixels)

Output Format

Select Images (Batch Supported)

Drag and drop images here, or

Image Preview

Please select image files to preview

Resize Results

Not Processed

Please upload images and resize them to view results

Original Image	Original Size	New Size	Action

Usage Instructions

Select Resize Method

Choose the appropriate resize method such as specifying width & height, scaling by percentage, or specifying width only.

Set Parameters

Fill in the corresponding parameters based on the selected resize method, such as width, height, or scale percentage.

Upload Images

Drag and drop images to the upload area or click the browse button to select multiple image files.

Resize Images

Click the "Resize Images" button, and the system will process the images in batch and adjust their dimensions.

Download Results

After processing is complete, you can download images individually or in a compressed package.

Image Resizing Basics

What is Image Resizing?

Image resizing is the process of changing the width and height of an image, which can enlarge or reduce the image. Resizing an image doesn't change its content, only its display size.

Common Resize Methods

Specify Width & Height

Directly set the target width and height, suitable for scenarios requiring precise dimensions, such as social media covers or posters.

Scale by Percentage

Enlarge or reduce the image by a fixed percentage while maintaining the original aspect ratio, suitable for scenarios where you need to keep the image from being distorted.

Specify Width Only

Only set the target width, and the system will automatically calculate the height to maintain the original ratio, suitable for web images and blog illustrations.

Output Format Features

JPEG

Supports high compression ratio, small file size, suitable for photos and complex images, but may lose some image quality.

PNG

Supports transparent background, lossless compression, high image quality, but larger file size, suitable for icons and images requiring transparent backgrounds.

WebP

Modern image format with high compression efficiency, supports transparency, and generally has a smaller file size than JPEG and PNG at the same quality level.

The Importance of Aspect Ratio

Aspect ratio is the proportional relationship between an image's width and height. Maintaining the original aspect ratio prevents image distortion and keeps the resized image looking natural and aesthetically pleasing. If you need a specific size without distortion, consider cropping the image or adding a background color.

Usage Tips

Avoid excessive image enlargement, as this may cause the image to become blurry or pixelated. It's generally recommended not to enlarge by more than 150%.
For web images, a width between 800-1200 pixels is usually recommended to ensure good loading speed and display quality.
When resizing multiple images, using the same parameters ensures all images have consistent dimensions for uniform presentation.
When choosing an output format, consider the image's purpose and the requirements of the target platform. WebP format is usually the best choice for web use.

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