The 2026 Aspect Ratio Cheat Sheet: Native Sizes for Every Ad Platform and Marketplace

The platforms reward native — the platform-built dimensions that match the feed's default crop. Letterboxing or cropping in post adds black bars (kills hook rate), forces center-weighted composition (loses bottom-third CTAs), or stretches subjects (looks amateur). Across paid social benchmarks, native 9:16 vs letterboxed 1:1 on Reels typically sees a 22% CTR gap and a 17% CPA gap — large enough that “just resize it” is the most expensive shortcut in performance creative.

Meta Ads (Facebook + Instagram)

Meta runs the broadest set of placement options. The auction will deliver into whichever placement has best efficiency, so creative needs to be ready for all three primary ratios.

• Reels and Stories — 9:16 at 1080×1920. The vertical full-screen surface. Place key visuals and copy in the central 1080×1500 safe zone — UI overlays clip the top and bottom 220 pixels.
• Feed (Facebook + Instagram) — 4:5 at 1080×1350. The portrait ratio Meta now favors for Feed ads. Outperforms 1:1 by 6–9% on CTR in like-for-like tests (Meta IQ benchmarks).
• Feed (square fallback) — 1:1 at 1080×1080. Still acceptable, often used for asset reuse across channels, but no longer the optimal Feed ratio.
• Carousel cards — 1:1 at 1080×1080 (one ratio enforced across all carousel cards).
• Right column (desktop only) — 1.91:1 at 1200×628. Rarely worth dedicated creative.

TikTok Ads and TikTok Shop

• In-Feed Video Ads — 9:16 at 1080×1920. The flagship surface; this is what In-Feed and Spark Ads look like.
• TopView and TikTok Shop Video — 9:16 at 1080×1920.
• TikTok Shop product listing photos — 3:4 or 1:1.1200×1600 is the spec for the listing's primary slot; secondary slots accept 1:1.
• Carousel images (TikTok Photo Ads) — 9:16 at 1080×1920 per slide.

Bottom-third safe zone matters more on TikTok than anywhere else — the platform UI (username, sound, captions, CTA button) takes 30% of the bottom of the frame. Place the product and key copy in the upper 60%.

YouTube

• Shorts — 9:16 at 1080×1920. Now the default short-form surface.
• Standard video (in-stream) — 16:9 at 1920×1080. The classic ad slot, primarily skippable and bumper ads.
• Connected TV — 16:9 at 1920×1080 (minimum), 4K accepted on supported devices.
• Thumbnails — 16:9 at 1280×720 minimum.

Pinterest

• Standard Pin / Promoted Pin — 2:3 at 1000×1500. The Pinterest-native ratio.
• Idea Pins and Video Pins — 9:16 at 1080×1920.
• Square (fallback for product feeds) — 1:1 at 1000×1000.

Pinterest is one of the few platforms that explicitly down-ranks letterboxed creative in its quality score — letterboxing tanks both organic distribution and ad delivery efficiency.

Amazon (A+ Content, Brand Story, Listings)

• Main listing image — 1:1 at 2000×2000 minimum, white background, product fills 85% of frame.
• Secondary listing gallery — 1:1 at 2000×2000. Lifestyle imagery permitted here.
• A+ Standard modules — module-specific.Common: 970×600, 600×450, 1464×600. Check Seller Central for the exact module you're placing into.
• Premium A+ — module-specific, including 16:9 video at 1920×1080 and full-width carousels at 1464×600.
• Brand Story — module-specific, typically 1464×625 hero with 463×625 carousel cards.
• Sponsored Brands Video — 16:9 or 1:1. 16:9 at 1920×1080 is the dominant format for headline placements.

Shopify, Etsy, and Other Marketplaces

• Shopify product page gallery — 1:1 or 4:5 at 2048×2048 or 2048×2560. Most themes accept both; 1:1 is the safer default for consistent rendering.
• Shopify storefront hero — 16:9 or 21:9 at 1920×1080 minimum.
• Etsy listings — 1:1 or 4:3 at 2700×2025 minimum. Etsy weighs imagery heavily in search ranking.
• Walmart Marketplace — 1:1 at 2200×2200 minimum, white background for hero.
• eBay — 1:1 at 1600×1600 minimum, white background.

Email and Display Ads

• Email hero — 16:9 or 3:2, 1200px wide max for retina rendering.
• Google Display Network — multi-ratio. Standard sizes: 300×250, 336×280, 728×90 leaderboard, 300×600 half-page, 320×100 mobile banner. Responsive Display Ads accept 1.91:1 (1200×628) and 1:1 (1200×1200).

The Production Strategy

Most teams pick three native ratios and ship every concept in all three. The defensible default for DTC and e-commerce:

• 9:16 for Reels, Stories, TikTok, Shorts, Pinterest Idea Pins.
• 4:5 for Meta Feed, Shopify product gallery secondary slots, Pinterest (close to 2:3, can crop).
• 1:1 for Amazon, Walmart, eBay, Etsy, carousels, and any white-background marketplace slot.

This stack covers 90% of placements without re-cropping. The remaining 10% (16:9 for YouTube, 2:3 for Pinterest Pins, A+ modules) are channel-specific extras worth producing only after the core stack is in place.

The structural reason AI UGC matters here: every concept multiplies by 3–5 ratios, which means a 30-concept monthly creative slate is actually 90–150 finished assets. Studio shoots that produce one ratio and crop the rest pay the quality tax everywhere except the source ratio. ppl.studio generates each ratio at production resolution from the same setup — same AI Expert, same Props, same scene, three native exports.

Validation Checklist Before Launch

1. Confirm native ratio per placement. No letterboxing, no stretching, no center-cropping that loses the product.
2. Verify safe zones for platform UI. Reels and TikTok bottom-third, Stories top bar, YouTube thumbnail text safe area.
3. Check minimum resolution. Amazon Main Image at 2000×2000+ for zoom; Meta minimum 600×600 (1080+ recommended).
4. Validate file format. Most platforms accept JPG and PNG; TikTok, Reels, and Shorts prefer MP4 H.264 for video.
5. Run a spec checker. Use our free Product Image Spec Checker to validate against each marketplace before upload.

For a deeper look at the creative-volume math behind shipping every concept in three ratios, see how to scale ad creative without a design team.