Resize Image to 400x400 Online

400x400 pixels is the recommended profile picture upload size on X (Twitter) and is commonly used as a reference size across other platforms as well. Even though profile pictures are often displayed much smaller, such as 48x48 pixels in a feed, uploading at 400x400 gives the platform more pixel data to work with. This results in a sharper image on high-DPI Retina displays, where smaller uploads can look blurry or pixelated when scaled up.

The tool upscales it to 400x400 and shows a warning above the download button once the result is ready. For profile pictures, upscaling a small photo or logo can introduce visible softness, especially since most platforms display the image as a circle and crop the corners. For the sharpest result, start with a source image that is at least 400 pixels on its shortest side and keep your subject centered, since circular cropping removes the corners of a square image.

Exactly 400x400. The width and height are locked to this page's preset, so whichever mode you choose, Fill, Fit or Stretch, the output canvas is always precisely 400 by 400 pixels.

Yes. Most platforms display profile pictures as a circle, which crops out the corners of a square image. Use Fill mode to crop your image to a perfect square while keeping the center intact, and make sure your face or logo is positioned in the middle of the frame before resizing. Anything near the corners of the original image will not be visible once the circular crop is applied.

Fill scales your image to completely cover the 400x400 square and crops evenly from the edges, no padding, which is why it's the better choice for centering a face or logo. Fit scales to fit entirely inside the square without cropping, but adds white padding around any mismatched edges, which usually looks wrong for a circular profile photo since the padding shows as flat white corners inside the visible circle.

Not with Fit mode here, it always fills padding with solid white, even when PNG output is selected. If your logo needs a transparent background, use Fill or Stretch mode with PNG output instead.

You can upload JPEG, PNG, WebP, AVIF or HEIC. The output is JPEG or PNG only, there's no WebP or AVIF export on this page. Choose PNG if your logo or graphic needs to keep transparency.

No. The image is decoded to raw pixels and re-encoded during resizing, so EXIF metadata, including GPS location, is not carried over to the 400x400 output file, worth knowing since profile pictures are often personal photos.

No. Resizing runs entirely in your browser using WebAssembly. Your image is never sent anywhere.

This page resizes one image at a time. If you're preparing profile pictures across several accounts or platforms, you'll need to run each image through separately here.

The quality slider defaults to 85, which is a good balance for a profile picture. Drag it lower for a smaller file, or higher if the image will be viewed at full size often. PNG output has no quality slider, since it's always encoded losslessly.