Social Media Image Size Guide

This social media image size guide lists the recommended dimensions, minimum sizes and file limits for the images you upload most: Instagram square, portrait and landscape posts and Stories, YouTube thumbnails, Shorts thumbnails, channel banners and watermarks, Facebook covers and link previews, LinkedIn Page logos, covers and shared images, Pinterest image and video Pins and website favicons. Every figure comes from the platform’s own help centre or developer documentation, linked below, and was checked in October 2026.

Pick a placement and enter the size of your photo or design, and the calculator tells you whether it already fits, which aspect ratio it is, exactly how many pixels to crop to hit the target ratio without stretching, and how much to scale afterwards. It is aimed at social media managers, designers, YouTubers and developers setting og:image tags.

Platforms change their layouts regularly and often display images smaller than the recommended upload size; uploading at the recommended size keeps images sharp on high-density phone screens. Where a platform specifies only an aspect ratio (Instagram Stories and Reels), the pixel size shown is that ratio at 1,080 px wide.

To fit an image of w × h pixels into a placement of W × H without stretching, the calculator first crops it to the target aspect ratio W ÷ H, keeping as much of the image as possible. If your image is wider than the target ratio it keeps the full height and trims the sides to h × W ÷ H; otherwise it keeps the full width and trims the top and bottom to w × H ÷ W. Values are rounded to whole pixels.

The resize percentage is the recommended width divided by the cropped width. Below 100% means you are scaling down (good); above 100% means the source has fewer pixels than recommended and will be upscaled, which looks soft. Aspect ratios are reduced with the greatest common divisor, or shown as decimals such as 1.91:1 when the reduced numbers are large.