Best Social Media Image Sizes & Dimensions for 2026

If you only want one answer, use 1200 x 630 pixels. That gives you a 1.91:1 image, which is the safest default for link previews across the major platforms. Facebook likes it, LinkedIn likes it, X can use it for large cards, and messaging apps usually know what to do with it.

That does not mean every platform renders the card exactly the same. They crop differently, compress differently, and place titles in different spots. But 1200 x 630 gives you the best starting point if you are trying to make one share image that does not look broken.

The middle of the image is the money area. Put the headline, product screenshot, face, offer, or main visual there. Do not tuck anything important into the corners. Some platforms crop a little. Some round the edges. Some shrink the whole thing until small text turns into dust.

The mistake people make is treating the OG image like a full-size landing page banner. It is not. It is a tiny preview card that has to work fast in a crowded feed.

Big text wins. Short text wins even harder. You want someone to understand the card in about one second. A title, a simple visual, and maybe one supporting phrase is usually enough.

If your card has a paragraph on it, cut it. The description already lives in the preview metadata. The image should create trust and make the link feel worth clicking.

The size does not matter if the platform cannot fetch the image. Use an absolute HTTPS URL, make sure the image is reachable without logging in, and avoid temporary signed links unless you know exactly how long they live.

Also make sure the file is not massive. A huge file can load slowly, get compressed badly, or time out for crawlers. Clean JPG or PNG is usually fine. WebP can work in many places, but JPG and PNG are still the safer boring choices for broad compatibility.

Do not wait until after you publish the post to find out the card looks wrong. Paste the URL into a preview tester, check the title, description, image, and domain, then fix the page before it goes live.

That is the whole loop: set the tags, test the URL, refresh after updates, and keep the image simple enough that every platform can render it without making it ugly.