Design

One 2000 × 2000 master file clears Amazon, Etsy, and Shopify. The exact specs per platform, the white-background rule that causes most rejections, and the shoot-once workflow.

YouTube quietly raised thumbnail limits to 4K and 50MB in 2026. The new specs, the anatomy of clickable design, and A/B testing that works.

Instagram’s grid now crops to 3:4, so your 4:5 posts get trimmed. Here’s every current size in pixels, plus the safe-zone trick that fixes it.