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Cover graphic for a 2026 social media sizes guide: a portrait 4:5 canvas card with a dashed safe zone labelled 1080 × 1350, a small clock, and 9:16 and 16:9 ratio chips, beside the headline Right size, right time.

Tools & Productivity

Social Media Image Sizes and Best Times to Post in 2026

A verified 2026 reference for social media image sizes, video dimensions, aspect ratios, safe zones and the best times to post across 17 platforms.

July 28, 202647 min read