2026 Social Media Image Dimensions: The Complete Sizing Guide

Every major platform's optimal image sizes, aspect ratios, and file limits for 2026: field-tested specs to stop auto-crop and preserve quality on upload.

At a Glance

In 2026, the optimal social media image dimensions are: Instagram feed 1080×1350 px (4:5), Stories and Reels 1080×1920 px (9:16); LinkedIn single-image posts 1200×627 px (1.91:1) and personal banners 1584×396 px; X (formerly Twitter) landscape 1600×900 px (16:9); Facebook link preview 1200×630 px; Pinterest Standard Pin 1000×1500 px (2:3); TikTok 1080×1920 px (9:16); YouTube thumbnails 1280×720 px (16:9); Threads 1080×1350 px (4:5). Always export to the sRGB colour space, serve WebP where the platform supports it, and match the target aspect ratio before upload to prevent automatic platform re-cropping.

What Are the Correct Image Sizes for Each Social Platform in 2026?

Every network renders uploads through a different imaging pipeline, which means a single source asset will be auto-cropped, down-sampled, or recompressed differently depending on where it lands. The dimensions below reflect what each platform's 2026 upload spec actually treats as canonical: not the aspirational 'maximum' dimensions buried in help centres, but the sizes the in-feed renderer ships to viewers.

  • <strong>Instagram</strong>: Feed square 1080×1080 px (1:1), Feed portrait 1080×1350 px (4:5), Stories/Reels 1080×1920 px (9:16), Profile 320×320 px
  • <strong>X (formerly Twitter)</strong>: Landscape post 1600×900 px (16:9), Portrait 1080×1350 px (4:5), Header 1500×500 px (3:1)
  • <strong>LinkedIn</strong>: Single-image post 1200×627 px (1.91:1), Personal banner 1584×396 px (4:1), Company banner 1128×191 px (5.9:1)
  • <strong>Facebook</strong>: Feed photo 1200×1200 px (1:1), Link preview 1200×630 px (1.91:1), Cover 851×315 px (2.7:1)
  • <strong>Pinterest</strong>: Standard Pin 1000×1500 px (2:3), Square Pin 1000×1000 px (1:1), Idea Pin 1080×1920 px (9:16)
  • <strong>TikTok</strong>: Video cover 1080×1920 px (9:16), Profile 400×400 px (1:1)
  • <strong>YouTube</strong>: Thumbnail 1280×720 px (16:9), Channel art 2560×1440 px (16:9)
  • <strong>Threads</strong>: Portrait 1080×1350 px (4:5), Square 1080×1080 px (1:1)
  • <strong>WhatsApp</strong>: Status 1080×1920 px (9:16), Profile 1080×1080 px (1:1)
  • <strong>Snapchat</strong>: Ad 1080×1920 px (9:16)

Which Aspect Ratios Dominate Each Feed, and Why?

Aspect ratio is the single variable that decides whether your image displays in full or is cropped at the edges. Every feed layout in 2026 is engineered around a small set of ratios tuned to the dominant viewing device (vertical mobile) and the platform's scroll behaviour. Picking the wrong ratio doesn't just look unpolished. It reduces the image's share of the viewport, which measurably shrinks dwell time and organic reach.

  • <strong>4:5 (portrait)</strong>: highest-performing ratio on Instagram, Threads, and Facebook feeds; occupies maximum screen height on a vertically-held phone
  • <strong>9:16 (full portrait)</strong>: required for Stories, Reels, TikTok, and Snapchat; fills the entire mobile viewport edge-to-edge
  • <strong>1:1 (square)</strong>: the safest cross-platform default; guaranteed not to crop on Instagram, X, or Facebook grids
  • <strong>16:9 (landscape)</strong>: native to YouTube, LinkedIn articles, and X landscape posts; matches the HD display aspect
  • <strong>1.91:1 (link card)</strong>: the Open Graph default for Facebook and LinkedIn link previews
  • <strong>2:3 (tall pin)</strong>: Pinterest's highest-performing ratio for organic discovery in 2026

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