Resize an Image to 512x512 Online

Scale an image down to a 512 by 512 pixel icon or avatar. The resize happens in your browser using your device only.

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Image Resizer

LOCAL · Browser-Only

Resize images to exact dimensions or percentage

Drop an image here or browse

JPEG, PNG, WebP, GIF, BMP

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Quick Start

1Upload the image you want to resize
2Choose Dimensions mode and enter 512 x 512
3Keep aspect lock on for a square source
4Download the resized icon as PNG

What This Tool Does

512 by 512 is the size app stores, extension manifests and web app manifests tend to ask for. It is large enough to be scaled down into every smaller icon slot without going back to the source artwork each time.

Type it into the width and height fields; the icon presets on this tool stop at 256, so 512 is a manual entry rather than a preset. Keep the aspect lock on when the source is already square and it stays square.

PNG is the right output for an icon. Transparency is preserved, edges stay hard, and a logo at this size is small enough that lossless costs nothing. JPEG would add a white background and soften the edges.

Limits Worth Knowing

An icon should start from a vector export or a large raster. Enlarging a 128 pixel logo to 512 gives you a blurry 512 pixel logo.
Icon presets are provided for 16, 32, 64, 128 and 256 pixels; 512 is typed in.
Choosing JPEG fills any transparent area with white, which is almost never what an icon wants.
The downloaded file is named after the dimensions rather than after the original.
Everything happens in your browser, so an unreleased logo does not go anywhere.

Common Questions

Why do so many places ask for 512 by 512?

It is the largest common icon size, and every smaller size can be produced from it. Supplying it once means you can generate the rest without going back to the designer.

Can I produce the smaller sizes here too?

Yes, one at a time. There are presets for 16, 32, 64, 128 and 256, so it is a matter of resizing and downloading once per size.

Should I use PNG or WebP?

PNG. Icon support for it is universal and the file is small at this size anyway. WebP is worth considering only where you know the consumer accepts it.

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Looking for FAQs and advanced options? Visit the full Image Resizer page →

What This Tool Does

Limits Worth Knowing

An icon should start from a vector export or a large raster. Enlarging a 128 pixel logo to 512 gives you a blurry 512 pixel logo.

Icon presets are provided for 16, 32, 64, 128 and 256 pixels; 512 is typed in.

Choosing JPEG fills any transparent area with white, which is almost never what an icon wants.

The downloaded file is named after the dimensions rather than after the original.

Everything happens in your browser, so an unreleased logo does not go anywhere.