How to resize images for social media

Why exact dimensions matter

Social platforms resize images to fit their containers. If your image is the wrong aspect ratio, the platform crops it (often automatically, cutting off faces or text). If it's too small, the platform scales it up, introducing blur. Too large, and you waste bandwidth on compression that the platform applies anyway.

Getting dimensions right before uploading keeps your images sharp and properly framed.

Platform dimensions (2024–2025)

How platforms handle the wrong size

Instagram crops to fill the container. If your 16:9 landscape photo is posted as a square post, Instagram crops the sides. Anything outside the center square is cut off. For portraits, it crops top and bottom.

LinkedIn scales images down to fit but maintains aspect ratio, which can result in letterboxing (gray bars on the sides or top/bottom). For link preview images, LinkedIn pulls the og:image from your page, which ideally is 1200 × 628.

YouTube compresses thumbnails aggressively. A high-contrast, simple thumbnail with large text survives YouTube compression much better than a detailed photo. At 1280 × 720, the JPEG quality after YouTube's re-encode is visibly reduced, so start with a high-quality image and bold design choices.

Resizing vs cropping

Resizing changes the dimensions while maintaining the original aspect ratio (adding or removing canvas as needed, or stretching). Cropping removes content from the edges to match a target aspect ratio. For social media, you usually need to crop to the right ratio, then resize to the correct pixel dimensions.

If you resize without cropping a differently-shaped image, you'll either stretch it (distorting faces and shapes) or add letterbox bars. Neither looks good.