AI Image Sizes & Ratios: The Platform Cheatsheet
One table covering image size and ratio specs across major platforms — pick the right ratio for AI generation and avoid crops and blur.
Common ratios and their uses
- 1:1 square: product heroes, podcast covers, profile feeds
- 16:9 landscape: YouTube, article headers, slides
- 9:16 vertical: TikTok/Reels, short video, vertical posters, Stories
- 4:5 / 3:4 vertical: feed ads, social covers, posters
Quick platform reference
- Newsletter / article headers: 2.35:1 or 16:9, keep center safe
- Visual social covers: 3:4, keep titles clear of top and bottom UI
- YouTube thumbnails: 1280×720 (16:9)
- TikTok / Reels covers: 1080×1920 (9:16)
- General feed posts: 1:1 or 16:9
- E-commerce heroes: mostly 1:1, follow each marketplace's white-background rules
How to choose
- Pick the publishing platform first, then derive the ratio.
- For multi-platform distribution, do the primary ratio first, then re-export the rest.
- Keep a safe area — never push key elements to the edges.
Cross-platform cover workflow: podcast & video cover guide.
Generate at the right ratio
Peituka ships with 1:1, 16:9, 9:16, 4:5, and 3:2 built in — pick per platform and generate.
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