Why does every platform need a different size?
Instagram, Facebook, X, LinkedIn, and YouTube each have their own layout and preview behavior, so the ideal image size differs across profile photos, feed posts, covers, and stories. Upload an image with the wrong aspect ratio and the platform will auto-crop or pad it, breaking the composition you intended. This is especially noticeable when people or text sit near the edge of the frame — they can get cropped out entirely.
Pick a platform and placement and this tool instantly shows the recommended dimensions and ratio. If you already have an image ready, enter its width and height to see how far off it is from the recommended ratio and whether it's at risk of cropping.
Frequently Asked Questions
The platform will auto-crop or compress your image, which can cut off important parts or reduce image quality.
Matching the ratio avoids cropping, but very low resolution can still look blurry on screen, so it's best to match the recommended resolution too.