How to Resize an Image Online

Resize images to any dimension instantly in your browser. Maintain aspect ratio, set exact pixels, or resize by percentage. Free — no upload to servers.

Open Image Resizer →

Step-by-Step Guide

1

Upload your image

Drag and drop an image or click to browse. Supports PNG, JPEG, WebP, GIF, and SVG. The image loads instantly — it stays in your browser and is never uploaded to any server.

2

Set target dimensions

Enter the desired width and height in pixels, or use percentage scaling (e.g., 50% to halve the size). Lock aspect ratio to prevent distortion.

3

Preview the result

See a live preview of the resized image alongside the original. Compare file sizes and dimensions to ensure the output meets your requirements.

4

Download the resized image

Click "Download" to save the resized image. Choose output format (PNG, JPEG, WebP) and quality level. All processing happens locally in your browser.

Try It Now — Free

No signup, no download. Runs entirely in your browser.

Open Image Resizer

Frequently Asked Questions

Is my image uploaded to a server?
No. All image processing happens entirely in your browser using the Canvas API. Your images never leave your device, making this tool safe for sensitive or private photos.
Will resizing reduce image quality?
Enlarging images can reduce quality (pixels are interpolated). Shrinking usually looks fine. For JPEG output, you can adjust the quality slider to balance file size and sharpness.
What is the maximum image size?
The tool handles images up to several thousand pixels wide. Very large images (10,000+ pixels) may be slow on older devices since processing uses your device CPU.
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