Resize Image to 512x512

A 512 by 512 square suits avatars, icons and marketplace thumbnails. The width and height fields are already set to 512, so opening the page finishes half the job.

Square 512 is a common avatar size, and a few listing sites accept nothing else. This page opens on Exact with both fields already reading 512 and the aspect lock off, so the picture is written to a true square. The Preview line states the output before you commit, and the source image is left untouched until you press Apply Resize.

  • Upload the image; Exact is selected and both fields already read 512.
  • Check the Preview line, which names 512 by 512 and its megapixel count.
  • Press Apply Resize, then undo or download from the workspace header.

What the options do

Why the aspect lock is off
A 512 by 512 result is a square whatever the source shape, so holding the original ratio would leave one side short. With the lock off, both sides are written as typed.
Exact, not a box
Exact means the final width and height, so the output really is 512 by 512. Fit would have shrunk the image to sit inside that box and left one side short of the target.

The two fields carry the size the page promises, so a first press is all that is normally needed. If the picture looks stretched because it was not originally square, switch to Fit to keep the proportions, or crop it to a square first and resize afterwards.

Common questions

Will a non-square photo be distorted?
With the fields set as they are, both sides are forced to 512, which stretches a rectangle into a square. To keep the proportions, switch the mode to Fit, or crop to a square before resizing here.
Can I keep the original ratio and still get a square?
Crop the image to a square in the Crop tool first, then resize it here. Cropping decides what is kept; resizing only changes how many pixels that kept area is written with.
Does resizing change the file format?
No. The output stays in the source format and is re-encoded, with JPEG quality lowered only if needed to avoid a larger file. A JPEG stays a JPEG and a PNG stays a PNG; Convert is a separate tool for changing the container.

Other sizes: Resize to 1920x1080, Resize to 3000x3000, All resizing options

All image processing happens in your browser. Your image is never uploaded, and there is no signup.