Image Resizer

Resize images to exact pixel dimensions or by percentage.

Drop an image here or browse PNG, JPG, WEBP, GIF or SVG — processed locally in your browser

Image processing on your device

The selected image is resized in your browser. Its contents are not uploaded by this tool.

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Clear instructions

Find steps, examples and limitations below.

Use online

Open the tool in a supported web browser.

Free to use

No sign-up required. Tool-specific limits may apply.

Reference resources

Image Size Guide
Pixel dimensions, aspect ratios, print resolution and responsive image sizing.
Social Media Image Dimensions
Official profile and banner recommendations for X, YouTube and LinkedIn.

How to use the Image Resizer

Resize images to exact pixel dimensions or by percentage.

1 Select an image. Width and Height initially show its original pixel dimensions.
2 Enter a new width or height with Keep aspect ratio enabled, or choose a Quick scale percentage. Disable the ratio lock only if you want independent dimensions.
3 Select PNG, JPG or WEBP and review the preview dimensions before clicking Download resized image.

Example and practical tips

A 1600 by 900 image becomes 800 by 450 at 50% scale. With the ratio lock enabled, entering a width of 1200 gives a height of 675.

Resize an image to exact pixel dimensions

Enter the required Width and Height. Keeping aspect ratio enabled changes the other dimension automatically. For a target with different proportions, crop first to avoid stretching the subject.

Resize without stretching

Keep aspect ratio enabled. A 2400 × 1600 image resized to 1200 pixels wide becomes 1200 × 800. Crop first if you need a different shape.

Pixel dimensions versus file size

A smaller width usually reduces the amount of image data, but it does not guarantee a specific file size. Use Image Compressor afterward when an upload has a size limit.

Frequently asked questions

Does resizing crop my image?

No. The whole image is resampled into the chosen dimensions. Independent width and height values can stretch it. Use the image cropper when you need to remove edges or change composition.

Will enlarging a photo add detail?

No. Increasing pixel dimensions interpolates the existing image; it does not recover missing detail. The 150% shortcut enlarges the image but is not an AI upscaler.

Which output should I choose?

Choose PNG or WebP when you need transparency. JPG output fills transparent areas with white. Very large dimensions can exceed your browser or device memory even within the controls’ allowed range.

How to Resize an Image Without Stretching It
Resize a photo to the dimensions you need, preserve its aspect ratio and choose an output format. See a worked pixel example and avoid common mistakes.
JPG vs PNG: Which Format Should You Use?
Choose JPG or PNG for photos, screenshots and transparent graphics. Learn what conversion changes and why converting to PNG does not restore lost detail.
How to Compress an Image for an Upload Limit
Reduce an image file for an upload limit using dimensions, output format and quality. Compare results without promising lossless JPG compression.
How to Use Image Resizer
Resize images by width, height or percentage. Keep aspect ratio and download PNG, JPG or WebP images with this free browser-based image resizer.