Social Media Image Sizes: The 2026 Cheat Sheet

The 2026 master dimensions table

Every asset below uses the current 2026 recommended dimensions, verified against platform guidance in July 2026. Design at these sizes, or at an exact 2x multiple, and export at 1080 px width or wider for feed content so the image stays crisp after the platform re-compresses it.

Two numbers anchor the whole sheet: 1080 pixels is the standard feed width across Instagram, Facebook, and TikTok, and 16:9 is the standard landscape ratio for YouTube thumbnails, X in-stream photos, and Discord banners. Learn those two and most of the table follows.

Why aspect ratio matters more than exact pixels

Aspect ratio matters more than exact pixel counts because every platform rescales your upload, but none of them will un-crop it. If you send a 4:5 image where a 1:1 slot is expected, the platform crops your image to fit the ratio, silently chopping off the top and bottom; if the ratio already matches, rescaling only changes sharpness, which is far easier to control.

This is why a 1080x1350 and a 2160x2700 image look identical in an Instagram feed, both are 4:5, and the platform normalizes them to the same display size. But a 1080x1080 square dropped into a 4:5 layout is a different shape entirely, and the automatic crop can behead a subject or cut off a call-to-action.

The practical takeaway: pick the correct ratio first, then worry about resolution. Roughly 70% of social media time is spent on mobile, where a mismatched ratio wastes screen real estate the moment it is cropped, so ratio errors cost you more visibility than a modest resolution shortfall ever would.

Resize vs crop: which one do you actually need?

Resize when your image already has the right shape but the wrong dimensions; crop when the shape itself is wrong. Resizing scales the entire image up or down while preserving every part of it and its aspect ratio, whereas cropping discards pixels to change the ratio or to zoom in on a subject.

If a photo is 3000x3750 (already 4:5) and you need 1080x1350, that is a pure resize, no content is lost. If the same photo is 3000x3000 (1:1) and you need 4:5, resizing alone cannot get you there; you must crop to 4:5 first, deciding which top-and-bottom pixels to sacrifice, then resize the cropped result to the target dimensions.

Do them in that order, crop to the ratio, then resize to the exact pixels, so you never distort the image by stretching it into a shape it was not.

Keeping quality when scaling down

To keep quality, always start from a larger original and scale down, never scale a small image up, because enlarging invents pixels the camera never captured and produces soft, blocky results. Downscaling averages real detail into fewer pixels and stays sharp; upscaling has no real detail to draw on.

Design at 2x for retina and high-density displays: a 1080-px-wide asset shown in a 540-px slot looks crisp on a modern phone screen, which packs two or more physical pixels into each layout pixel. Exporting at the platform's stated size or double it hits the sweet spot between sharpness and file size.

Finally, export in the format the platform re-compresses least. WebP is now accepted on most major platforms in 2026, but JPEG remains the safest universal fallback for photos, and PNG is best for graphics with text or hard edges where JPEG artifacts would show.

Can I resize social images privately in the browser?

Yes, a client-side resize tool crops and rescales your image entirely in the browser, so the file is never uploaded to a server. The work is done on an HTML canvas using your device's own processor, which means even a full-resolution photo is transformed locally and privately.

That keeps unpublished campaign art, client photos, and personal images off third-party servers while still giving you a fast, drag-and-drop workflow. Nothing leaves your machine, and there is no upload queue to wait on.

Frequently asked questions