Ideal Image Sizes for Every Social Platform (2026 Cheat Sheet)

Every platform resizes and compresses images that do not match its expected dimensions. Upload a banner that is too small and the platform stretches it, producing visible pixelation. Upload one that is too large or the wrong aspect ratio and the platform crops it automatically, often cutting off faces, logos, or text you needed visible.

The safest approach is to export images at the exact pixel size the platform expects, in the correct aspect ratio, before you upload. This avoids both problems at once: no stretching from undersized images and no unpredictable cropping from oversized or mismatched ones.

Dimensions also change periodically as platforms redesign their interfaces. The sizes below reflect current 2026 specifications, but it is worth rechecking after a platform announces a redesign, since profile and cover image crops are the specs that shift most often.

Instagram supports three feed post aspect ratios: square, portrait, and landscape. Square remains the safest default because it displays fully in the grid view without additional cropping. Portrait gets more vertical space in the feed and tends to perform better for engagement, but must stay within the supported ratio or Instagram crops it.

Stories and Reels use a different canvas entirely, built for full-screen vertical viewing. Text or logos placed too close to the top or bottom edge risk being covered by the profile name, caption box, or interface buttons, so keep key content within the safe zone in the middle 80 percent of the frame.

LinkedIn image specs matter more than people expect because the platform is used heavily on desktop, where cropping mistakes are far more visible than on a phone screen. The cover banner in particular is a common failure point: many people upload a banner sized for their profile photo instead, and LinkedIn crops the sides off.

Single-image posts on LinkedIn perform best square or landscape, since the feed preview shows more of a square image before a viewer has to click through. Article header images are wider and get cropped hardest at the top and bottom, so keep any text centered vertically.

The thumbnail is the single highest-leverage image on YouTube since it directly affects click-through rate from search and recommendations. It must be sharp at both full size and the small size shown on mobile, so avoid thin text and low-contrast colors that disappear when the thumbnail is shrunk.

Channel banner art is trickier than it looks because YouTube shows a different crop on TV screens, desktop, and mobile from the same uploaded image. Keep logos and text inside the safe area in the center of the banner so they are never cut off on any device.

These three platforms round out the sizes most marketing teams need on a regular posting schedule. Facebook and X both compress images fairly aggressively, so start with a slightly higher resolution source file than the minimum listed if the image contains fine text or a logo.

You do not need design software installed to hit these exact dimensions. Browser-based resize tools handle the crop and export in a few seconds, which is enough for most social posting workflows. Dedicated free tools exist for the most common jobs: resizing to 1080p, cropping specifically for Instagram, fitting a LinkedIn banner, and building a YouTube thumbnail at the correct aspect ratio.

If your source file is an SVG logo or icon that a platform will not accept directly, convert it to PNG first at the target pixel size rather than exporting a tiny default size and letting the platform stretch it.