Social Media Post Dimensions Guide 2026 (Every Platform, Every Format)
Wrong dimensions are the fastest way to make good content look bad. A crop that cuts off a face, a logo squeezed by the wrong aspect ratio, a video with the caption text buried under TikTok's UI — none of it is a creative problem, and all of it is completely avoidable once you know the numbers.
This guide covers the current dimensions for every major platform in 2026, the safe zones that keep your content from being covered by interface elements, and — since manually resizing every image five ways is exactly the kind of work that shouldn't need a person — how to automate the whole thing.
The 2026 quick-reference cheat sheet
Bookmark that table. Everything below explains the reasoning and the exceptions.
2026 changed the default here: Instagram's profile grid moved from a square (1:1) preview to a taller 3:4 portrait preview, and the platform now recommends 1080 × 1350px (4:5) as the primary feed format. Square posts at 1080×1080 still work and won't be rejected, but they'll appear more cropped in the new grid layout than a properly sized 4:5 image. Stories and Reels remain full-screen vertical at 1080 × 1920px (9:16).
Meta has pushed Facebook and Instagram toward the same taller, mobile-first defaults, so a 4:5 image built for Instagram now works natively on Facebook's feed too. The exceptions are link previews, which still follow the Open Graph standard at 1200 × 630px, and the cover photo, which stays at the long-standing 820 × 312px (desktop display — upload larger and let Facebook crop it, since mobile display trims the edges differently).
X (Twitter)
A single in-feed image at 1200 × 675px (16:9) displays cleanly without cropping in most timeline views, though square 1080×1080 images are also fully supported. Profile headers remain 1500 × 500px.
LinkedIn is the outlier in a mobile-first, vertical-first year: native image posts perform best as square (1200 × 1200px), while posts that include a shared link render as a 1.91:1 card (1200 × 627px) — the same Open Graph ratio Facebook and X use. Company page cover banners are a wide 1128 × 191px.
TikTok
TikTok is vertical-only: 1080 × 1920px (9:16) for every post, no exceptions. The only real decision left is what sits inside the frame — see the safe zone note below.
YouTube
Thumbnails are the highest-leverage image on YouTube and should be built at 1280 × 720px (16:9), since that's what renders sharp across both desktop and mobile browsing. Shorts follow the same 9:16 vertical standard as TikTok and Reels. Channel banners are 2560 × 1440px, but only the center ~1546 × 423px is guaranteed to be visible across devices — keep your logo and key text inside that zone.
Pinterest rewards the tallest aspect ratio of any major platform: the standard Pin is 1000 × 1500px (2:3), noticeably taller than Instagram's 4:5. A 4:5 image will still upload, but it won't take up as much space in the feed as a properly proportioned Pin.
Safe zones: the part most guides skip
Getting the dimensions right solves half the problem. The other half is knowing which part of a 9:16 vertical frame (Stories, Reels, Shorts, TikTok) is actually visible once the platform's own interface is layered on top:
Top ~150px — covered by the username, profile photo, and platform icons
Bottom ~350px — covered by the caption, sound attribution, and engagement buttons (like, comment, share)
Safe center zone — roughly the middle 1080 × 1420px of the full 1080×1920 frame
Any text, logo, or face you need visible should sit inside that safe center — not just inside the frame.
The manual way vs. the automated way
Here's what building all of this by hand actually looks like for one piece of content: export the source image, crop it to 4:5 for Instagram and Facebook, crop it again to 9:16 for Stories, crop it again to 1.91:1 for the link preview, resize it to 1200×1200 for LinkedIn, and reformat it once more for Pinterest — five to six exports, from one image, every time you post.
This is exactly the kind of repetitive, rules-based task that doesn't need a person doing it manually. ChannelDesk's template engine is built around this problem specifically: upload or pull in one source image, and the template engine automatically crops and resizes it to match each connected channel's best-practice dimensions — 4:5 for Instagram and Facebook, 9:16 for Stories and Reels, the right aspect ratio for LinkedIn and Pinterest — without anyone manually re-exporting a single file. The safe-zone rules above are built into the crop logic, so key content doesn't end up hidden behind a platform's own UI.
FAQ
What is the best universal image size for social media in 2026?
1080 × 1350px (4:5) is the closest thing to a universal size — it's Instagram's and Facebook's recommended feed format, and it adapts cleanly to most other platforms. For vertical video (Stories, Reels, TikTok, Shorts), 1080 × 1920px (9:16) is the universal standard.
Do I need different image sizes for every platform, or can I reuse one?
You can design two "master" versions — one 4:5 (or 1:1) for feed posts and one 9:16 for vertical video — and adapt most other formats from those. LinkedIn's native square format and Pinterest's taller 2:3 ratio are the two exceptions worth building separately.
Why does my image look cropped even though I uploaded the right size?
Most platforms re-encode and sometimes re-crop images after upload, especially for cross-posted content (like Stories shared from Facebook to Instagram). Keeping important content inside the "safe zone" — away from the very edges — prevents this from cutting off faces, logos, or text.