The Definitive Guide to Image Aspect Ratios for Social Media in 2026

Why Image Dimensions Matter So Much for Social Media

Every social media platform has specific image dimension requirements. Upload the wrong size and the platform auto-crops your image — often cutting off faces, text, or key visual elements. Post an image in the wrong aspect ratio and it displays as a tiny thumbnail surrounded by letterbox bars. This is avoidable.

This guide gives you the exact recommended dimensions for every major platform in 2026. Once you have the right sizes, our free Image Resizer tool resizes and crops to exact pixel dimensions in your browser — no Photoshop needed.

What Is an Aspect Ratio?

An aspect ratio describes the proportional relationship between an image's width and height. 16:9 means the width is 16 units for every 9 units of height (the standard widescreen ratio). 1:1 is a square. 9:16 is a vertical (portrait) format optimized for mobile screens. The aspect ratio stays the same whether you're at 1280×720 or 3840×2160 — both are 16:9.

Why it matters: platforms display images in specific aspect ratio containers. An image that doesn't match gets cropped to fill the container — and the cropping is automatic, not always intelligent.

Instagram Image Sizes (2026)

Feed post — square: 1080×1080px (1:1) — the safest option for feed posts
Feed post — landscape: 1080×566px (1.91:1) — horizontal photos and banners
Feed post — portrait: 1080×1350px (4:5) — the tallest format allowed, fills more screen
Story and Reel: 1080×1920px (9:16) — full-screen vertical format
Profile photo: Displays at 110×110px, upload at least 320×320px
Carousel post: Same as feed post, each slide should match (1080×1080px recommended for consistency)

Pro tip: For maximum reach on Instagram, use the 4:5 portrait format (1080×1350px) in the feed. It takes up more screen space on mobile and typically gets higher engagement than square or landscape formats.

YouTube Image Sizes (2026)

Thumbnail: 1280×720px (16:9) — the most important image on YouTube. Use large text and clear visuals — it displays as small as 170×96px in search results.
Channel art (banner): 2560×1440px — displays at different crops depending on device. Keep key content in the center 1546×423px "safe area."
Channel profile photo: 800×800px (1:1), displays as circle at various sizes
Community post image: 1080×1080px (1:1)
YouTube Shorts: 1080×1920px (9:16) — vertical, like TikTok

Pro tip: YouTube thumbnails are tiny in search results. Use bold fonts, maximum contrast, and strong facial expressions. Text over 4 words is unreadable at thumbnail size.

X (Twitter) Image Sizes (2026)

In-feed image — single: 1600×900px (16:9) recommended. Auto-cropped to 600×335px in feed preview. Safe zone for key content: center 600×335px area.
In-feed image — 2 images: Each displays as 700×800px
In-feed image — 3 images: Large left image 700×800px, two right images 700×400px each
In-feed image — 4 images: Each 700×400px in 2×2 grid
Profile photo: 400×400px minimum, displays as circle
Header image: 1500×500px (3:1 ratio)
Card image (link preview): 800×418px (1.91:1)

LinkedIn Image Sizes (2026)

Personal post with image: 1200×627px (1.91:1) — optimized for link previews too
Company page post: 1200×627px
Profile photo: 400×400px (minimum), circular display
Company logo: 300×300px (square)
Profile banner: 1584×396px (4:1)
Company page cover image: 1128×191px
LinkedIn article cover image: 1920×1080px (16:9)
Carousel/document post: Up to 1:1 square, recommend 1080×1080px

TikTok Image Sizes (2026)

Video/image post: 1080×1920px (9:16) — always vertical, always full-screen
Profile photo: 200×200px minimum
TikTok photo mode: 1080×1920px (9:16) for vertical, 1920×1080px (16:9) for landscape

TikTok is always vertical. If you create horizontal content for YouTube, resize with our Image Resizer to create a vertical version for TikTok.

Facebook Image Sizes (2026)

Feed post image: 1200×630px (1.91:1)
Profile photo: 320×320px, circular display
Cover photo: 820×312px (desktop), 640×360px (mobile)
Facebook Story: 1080×1920px (9:16)
Facebook Reels: 1080×1920px (9:16)
Event cover: 1920×1005px
Facebook ad — link image: 1200×628px (1.91:1)

Quick Reference Table

9:16 (vertical/portrait): Stories and Reels on Instagram, Facebook, TikTok, YouTube Shorts → 1080×1920px
1:1 (square): Instagram feed, YouTube Community → 1080×1080px
16:9 (landscape/widescreen): YouTube thumbnails → 1280×720px; X posts → 1600×900px
1.91:1: Facebook/LinkedIn posts, X card → 1200×628px

Resize Images to Exact Dimensions for Free

Our Image Resizer tool lets you input exact pixel dimensions and crop to a specific aspect ratio — all in your browser without any software. It handles JPEG, PNG, and WebP. For even smaller file sizes after resizing, run the result through our Image Compressor.