Social Media Aspect Ratios 2026: The Complete Cheat Sheet

Every social platform now has its own aspect ratio rules — and most of them changed in the last 18 months. Instagram switched its grid to 3:4. YouTube extended Shorts to 3 minutes and made 9:16 the official recommendation. Meta unified Facebook and Instagram Reels into one safe zone. LinkedIn launched a dedicated vertical video feed. Pinterest deprecated Idea Pins. Get the ratio wrong and your content gets cropped, letterboxed, or buried by the algorithm.

This is the only cheat sheet you need for 2026. Every format, every ratio, every platform — verified against official documentation. Bookmark it.

Stop reformatting for every platform. PostEverywhere automatically adapts your content to the right aspect ratio for every network — Instagram, TikTok, YouTube, Facebook, LinkedIn, Pinterest, X, and Threads. Start your 7 day free trial →

The Master Cheat Sheet

Every format that matters in 2026, in one table.

The 2026 takeaway: Default to 9:16 for video and 4:5 for static images. These two ratios cover ~80% of social content and perform best across the modern feed algorithms.

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The Four Ratios That Run Social Media

You only really need to think about four aspect ratios. Everything else is an edge case.

9:16 — Vertical full-screen

Used by: Reels, TikTok, YouTube Shorts, Stories, LinkedIn vertical video, Pinterest Idea Ads.

Dimensions: 1080×1920 px.

This is the single most important ratio in 2026. If you only shoot in one format, shoot in 9:16. It fills the entire mobile screen, every platform's short-form algorithm rewards it, and you can crop down to 4:5 or 1:1 if needed.

4:5 — Portrait feed

Used by: Instagram Feed (recommended), Facebook Feed (recommended), LinkedIn Feed, Threads, carousel slides, document posts.

Dimensions: 1080×1350 px.

This is the static-image default. It takes up roughly 25% more vertical screen space than a 1:1 square, which means more time on screen and higher engagement. Default to this for all photo posts.

1:1 — Square

Used by: Twitter/X feed (still common), Facebook ads, Pinterest carousel cards, Instagram square posts, profile pictures.

Dimensions: 1080×1080 px.

The fallback ratio. Square content works everywhere but excels nowhere — it's only the right choice when you need a single asset that posts cleanly across every platform without cropping.

16:9 — Landscape widescreen

Used by: YouTube long-form, YouTube thumbnails, X video, presentation/lecture content, podcast cover art, channel banners.

Dimensions: 1920×1080 px (1080p) or higher.

Once the default of social video, now only relevant for long-form YouTube, ads, and X. Everywhere else, 16:9 gets letterboxed with ugly black bars and underperforms.

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What Changed in 2024–2026

If you last reviewed your specs more than a year ago, several rules have shifted.

1. Instagram switched its grid to 3:4. In January 2025, Instagram replaced its iconic 1:1 square profile grid with a 3:4 vertical preview. Adam Mosseri confirmed the change on Threads. Your 4:5 portrait posts now get slightly cropped on the profile grid — keep the subject in the centre 3:4 region. (9to5Mac)

2. YouTube Shorts extended to 3 minutes. Effective October 15, 2024, YouTube Shorts can now be up to 3 minutes long (up from 60 seconds). Anything square or vertical and 3 minutes or shorter is auto-classified as a Short. (YouTube Help)

3. Meta unified Facebook and Instagram Reels safe zones. As of March 2026, Meta consolidated Facebook Stories, Facebook Reels, Instagram Stories, and Instagram Reels into a single 9:16 safe zone. One vertical asset now works across all four placements.

4. LinkedIn launched a dedicated vertical video feed. Rolled out late 2024 and expanded in February 2025. LinkedIn reports +36% video viewership and +67% YoY weekly creation from program members. 9:16 vertical is now the recommended format for short-form on LinkedIn. (TechCrunch)

5. Pinterest deprecated Idea Pins. Announced May 2023, fully rolled out 2024 — Idea Pins (formerly Story Pins) are no longer a separate format. Use Video Pins at 9:16 for the same effect.

6. Instagram carousels doubled to 20 slides. Up from 10, rolled out globally August 2024. The first slide still sets the ratio for the entire carousel.

7. TikTok extended uploads to 60 minutes and started boosting horizontal long-form. TikTok now rewards 16:9 video longer than one minute with extra FYP distribution as part of its long-form strategy.

8. Instagram added native 3:4 photo support. In May 2025, Instagram added 3:4 (1080×1440) as a third native feed ratio. Mosseri's rationale: "almost every phone camera defaults to" 3:4. You can now post phone photos without cropping.

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Platform-by-Platform Quick Reference

Instagram

Most posts should be 4:5 (1080×1350). Reels and Stories are 9:16 (1080×1920). Carousels follow the first slide's ratio. Profile grid crops everything to 3:4. For the full breakdown, see Instagram aspect ratios and the pixel-by-pixel companion Instagram image sizes.

TikTok

9:16 (1080×1920) for everything. Horizontal video gets letterboxed and underperforms. Photo carousels also use 9:16 — TikTok force-crops mixed-ratio carousels. See the full TikTok aspect ratio guide and TikTok video sizes for pixel specs.

YouTube

16:9 (1920×1080) for long-form, 9:16 (1080×1920) for Shorts. Thumbnails are always 16:9 (1280×720). Channel banner uploads at 2560×1440 but only the centre 1546×423 px shows on mobile. Full breakdown: YouTube aspect ratios and YouTube thumbnail size.

Facebook

4:5 (1080×1350) for feed posts. 9:16 (1080×1920) for Reels and Stories — now unified with Instagram. Cover photo is 851×315. Right-column ads were standardised to 1:1 in 2026. See Facebook aspect ratios and Facebook image sizes.

LinkedIn

4:5 (1080×1350) for feed and document posts. 9:16 (1080×1920) for vertical video. Personal banner is 1584×396 (4:1). Company banner is 1128×191 (~5.9:1) — these are different, don't reuse artwork. See LinkedIn aspect ratios and LinkedIn image sizes.

Pinterest

2:3 (1000×1500) for everything. This is the only ratio Pinterest officially recommends for organic reach. Anything taller than 1:2.1 gets cropped in the feed. See Pinterest aspect ratios and Pinterest image sizes.

X (Twitter)

16:9 (1600×900) for feed images and video, but 9:16 vertical video is increasingly favoured for engagement. Header image is 1500×500 (3:1). Profile picture is 400×400 (1:1).

Threads

4:5 (1080×1350) or 1:1 (1080×1080) for static images. 9:16 (1080×1920) for vertical video. Threads inherits most ratio behaviour from Instagram. See Threads image sizes.

Plan once, publish to all 8 platforms. PostEverywhere handles the format switching automatically — upload one asset, schedule across every network. Try the social media scheduler →

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The Cross-Platform Shooting Strategy

If you create content for multiple platforms, the right way to shoot is once, with cropping in mind.

1. Shoot in 9:16 (1080×1920) by default. This gives you native Reels, TikTok, Shorts, Stories, and LinkedIn vertical video with no reformatting. Cropping down to 4:5 or 1:1 for feed posts is easy — cropping up to 9:16 from 16:9 is impossible without losing quality.

2. Frame for the centre. When you shoot vertical, frame your subject inside an imaginary 4:5 box in the middle of the 9:16 frame. That way the same asset works for Reels, feed posts, and even square posts.

3. Keep critical text and logos away from the edges. Every vertical platform overlays UI on top of your content — the bottom 250–340 px (caption, action buttons), the top 200–250 px (username, sound info), and the right edge (engagement buttons). Stay in the centre.

4. Always export at the maximum recommended resolution. Platforms compress on upload, so starting bigger preserves quality. Use 1080×1920 for vertical, 1920×1080 for landscape, 1080×1350 for portrait static.

5. Use a cross-posting tool for distribution. Doing the reformatting manually for eight platforms is hours of work per week. A scheduler that handles cross-posting automatically — PostEverywhere does this natively — is the only way this scales.

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The 10 Most Common Aspect Ratio Mistakes

After auditing hundreds of accounts, these are the mistakes that show up most often.

1. Uploading 16:9 video to TikTok or Reels. It gets letterboxed with massive black bars and the algorithm punishes you. Always export vertical for vertical platforms.

2. Shooting in landscape for Stories or Reels. Same problem. Rotate the camera before you start, not after.

3. Burning captions or logos into the bottom 30% of vertical videos. Every platform overlays UI here. Use the platform's native caption tools, or keep all text in the centre 60% of the frame.

4. Mixing aspect ratios in a carousel. Whether on Instagram, TikTok, or LinkedIn, the first slide sets the ratio. The rest get cropped or padded. Match all slides before uploading.

5. Using a 1:1 square thumbnail for a 16:9 video. YouTube thumbnails are always 16:9. Square thumbnails get letterboxed in browse views and look amateur.

6. Designing a banner for desktop only. Channel banners (YouTube, LinkedIn, Facebook, X) crop dramatically on mobile. Always check the mobile safe zone — typically the centre 1500-ish px of the canvas.

7. Posting a portrait image on Twitter/X. X heavily crops portrait images in the feed. Use 16:9 or 1:1 for X.

8. Pinning a square image to Pinterest. Pinterest is the one platform where 1:1 underperforms badly. 2:3 vertical is the only ratio worth pinning.

9. Re-using your Instagram cover photo as a Facebook banner. Different dimensions, different safe zones. Resize for each — or use an image resizer.

10. Trusting old cheat sheets. Specs changed in 2024 and 2025 across nearly every platform. If your reference is older than 12 months, it's wrong somewhere.

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Tools to Get Your Ratios Right

A few tools that make this easier:

• Image resizer — drop in any image, get the right aspect ratio output for any platform automatically.
• Instagram carousel maker — for designing multi-slide posts at exact 4:5 or 1:1 dimensions.
• Grid previewer — see how your Instagram posts will look on the new 3:4 grid before publishing.
• AI image generator — outputs images at publication-ready dimensions for every format.
• Best time to post — once your dimensions are right, post timing is the next lever.

For pixel-perfect dimensions (rather than ratios), see the companion social media image sizes guide.

One asset, every platform, every ratio. PostEverywhere auto-formats your content for Instagram, TikTok, YouTube, Facebook, LinkedIn, Pinterest, X, and Threads. Plans start at $19/mo. See pricing →

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Frequently Asked Questions

What aspect ratio is best for social media in 2026?

9:16 vertical (1080×1920 px) for video and 4:5 portrait (1080×1350 px) for static images. These two ratios cover the majority of social content and perform best across modern algorithms — vertical full-screen video gets the most engagement on every short-form platform, and 4:5 portrait dominates feed engagement.

What is the most universal aspect ratio across all platforms?

1:1 square (1080×1080 px). It works on every platform without major cropping, though it's no longer the best-performing ratio anywhere. Use 1:1 only when you need a single asset that must post identically across multiple networks. Otherwise, optimise per platform.

What aspect ratio do Instagram Reels and TikTok use?

Both use 9:16 vertical (1080×1920 px). Instagram Reels, TikTok, YouTube Shorts, Facebook Reels, and LinkedIn vertical video all share this format. One 9:16 asset can be cross-posted to all five with no resizing.

Did Instagram really change its grid to 3:4?

Yes. In January 2025, Instagram replaced its 1:1 square profile grid with a 3:4 vertical grid preview. Adam Mosseri confirmed the change on Threads. Your 4:5 portrait posts now get slightly cropped on the grid — keep your subject in the centre 3:4 region to avoid awkward crops.

How long can a YouTube Short be in 2026?

Up to 3 minutes. The 60-second limit was extended on October 15, 2024 for standard channels. Any uploaded video that is square or vertical and 3 minutes or shorter is auto-classified as a Short.

What aspect ratio works best for Pinterest?

2:3 portrait (1000×1500 px). This is the only ratio Pinterest officially recommends for organic reach. Anything taller than 1:2.1 (e.g., 1000×2100) gets cropped in the feed. Avoid square pins — they underperform on Pinterest more than on any other platform.

How do I post the same video to TikTok, Reels, and Shorts?

Export at 1080×1920 (9:16). All three platforms accept this format natively without reformatting. Frame your subject in the centre, keep important elements out of the bottom 340 px and the right 120 px, and you can post the same asset across all three. A cross-posting tool makes this a single upload instead of three.

What happens if I upload the wrong aspect ratio?

Most platforms either crop your content (cutting off subjects or text) or add letterbox bars (the black borders that signal "this video wasn't made for this platform"). Both hurt engagement. The algorithm interprets letterboxed video as low-effort and reduces its reach.

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Specs in this guide are verified as of May 2026 against official platform documentation including Meta Business Help, YouTube Help, LinkedIn Marketing Solutions, and Sprout Social's video specs guide. Platforms update specs periodically — we update this page when they do.