Social Media Image Sizes & Aspect Ratios
The dimensions each platform actually wants — and the fastest way to get a whole folder of images into that shape.
The dimensions each platform actually wants — and the fastest way to get a whole folder of images into that shape.
Looking up the number is the easy part. BulkImagePro resizes, crops, and converts entire batches in your browser — nothing is uploaded to a server, and there is no signup.
1080x1920 (9:16 vertical) is now the single most used size, because TikTok, Instagram Reels and Stories, and YouTube Shorts all share it. One export covers all four. For static feed posts, 1080x1350 (4:5) is the most common.
Partly. A 9:16 vertical works everywhere short-form video lives. Feed posts are the problem — Instagram wants 4:5, thumbnails want 16:9, and profile pictures want 1:1. The practical approach is to keep one high-resolution master and batch-resize it into each shape rather than re-exporting by hand.
Because they fall outside the ratios the platform supports, so it trims them to fit — almost always with a centre crop, which is rarely where you would have cut. Resizing before you upload means you choose what stays in frame.
Match the recommended width and let the height follow the ratio. Going much larger does not improve quality, because platforms re-compress everything on the way in — it just means your image is downsampled harder before anyone sees it.