Social Post Resizer
Upload an image and get perfectly sized versions for every major platform. No cropping headaches.
About the social post resizer
Every platform crops differently, and the wrong ratio is the most common reason a good photo looks awkward once it is published. This resizer takes one image and outputs it at the exact pixel size each network expects, using either a cover crop that fills the frame or a contain mode that keeps the whole image visible with padding.
The presets cover the sizes people actually need: square and portrait Instagram posts, a 9:16 story, the wide 1.91:1 Facebook link image, 16:9 for X and YouTube thumbnails, plus the large YouTube banner and the X header. Because everything is rendered on a canvas in the browser, there is no upload, no queue and no watermark on the result.
How to use it
- Upload the original image at the highest resolution you have.
- Pick the platform preset you are publishing to.
- Switch between cover and contain to decide whether cropping is acceptable.
- Download the PNG and upload it directly to the platform.
FAQ
Which mode should I choose?
Use cover when the subject is central and the edges are expendable; use contain when the whole frame matters, such as a poster or a screenshot with text near the edges.
Will the image get blurry?
The tool never invents detail. A small source stretched to a large preset will soften. Start from the largest file available, and check the size guide before exporting at extremes.