Image Resizer — Browser Image Tool

Image

Image Resizer is a browser-based image tool that resizes an image by maximum width while preserving aspect ratio.

Image Resizer

Local processingUnsupported formats or browser encoders are shown as clear errors.

Runs in your browser

Selected files and input are not uploaded to a server. Preview, conversion, hashing, and download file creation run in this browser session.

Supported input: JPG, PNG, WebP, AVIF images
Output: PNG image
Max file size: 25.00 MB
Max pixels: 32,000,000 px

Drag an image or click to choose

Max width

What is it

Image Resizer processes uploaded image files in your browser without sending them to a server. It uses standard web APIs such as Canvas, Blob, and FileReader to create output files for quick mockups, social uploads, and simple file conversion.

scale = targetWidth / originalWidth, height = originalHeight × scale

How to use

1Choose an image file.
2Adjust options if needed.
3Press process and download the result.

Reference

Image Resizer — Browser Image Tool Reference
Input	Result
image file	resizes an image by maximum width while preserving aspect ratio

Sources & standards

MDN Web Docs: Client-side web APIs - MDN Web Docs

FAQ

Is the Image Resizer file uploaded to a server?

No. This tool processes the file in your browser and does not upload it to a server.

Does Image Resizer preserve original quality?

Format conversion or resizing can change quality and file size depending on browser encoding.