Resize Image to 300x300
Upload any image and get a perfectly square 300x300px PNG, center-cropped and resized in one click, a common size for profile pictures and thumbnails.
Drag & drop an image, or click to browse
PNG, JPG, WEBP - up to 5MB
Where 300x300 is the right size
300x300 sits in a useful middle ground: sharp enough to hold up as a profile photo or avatar on a normal screen, but small enough that the file stays light - a center-cropped 300x300 PNG of a typical photo is usually well under 200KB, so it uploads fast and doesn’t eat into a marketplace listing’s image quota or a form’s file-size limit. It’s also the size most people reach for when a platform just says “square image, at least 300px” without giving an exact spec.
If the image needs to look sharp on a high-resolution (retina/Hi-DPI) screen at the same on-screen size, use 600x600 instead - it’s exactly double the pixel density for the same physical display size.
Frequently asked questions
How is the image cropped to a square?
The tool center-crops your image to a 1:1 square (keeping the middle of the photo, trimming the excess from the longer side) and then scales it to exactly 300x300px, so faces and centered subjects usually stay in frame.
What is 300x300 used for?
It's the classic square-avatar size: profile pictures, forum and community avatars, marketplace listing thumbnails, and any upload form that asks for a square image without giving an exact pixel spec. If a platform explicitly asks for something larger (400px, 512px, 1080px), use this site's general Image Resizer instead, which lets you type any exact dimension.
Why not just resize without cropping, so I don't lose any of the photo?
Because 300x300 is a perfect square (1:1), and almost no photo you take is already that shape - a straight resize (no crop) would squash a rectangular photo into a square, distorting faces and objects. Center-cropping trims the longer side evenly on both edges first, so nothing gets stretched; the trade-off is that the far left/right (or top/bottom) of the original photo is cut off, which is why centering the subject before uploading gives the best result.
My subject isn't centered - what can I do?
Crop the photo yourself first so the subject sits in the middle, then upload the cropped version here. This tool always crops from the exact center, so it can't compensate for an off-center subject on its own.
Is my image uploaded to a server?
No, resizing happens entirely in your browser using the Canvas API. Nothing is sent anywhere.