Crop to 1:1 / 16:9 / 9:16 — Which Ratio Does Each Platform Want?
Avatars want 1:1, Bilibili covers want 16:9, vertical short-video covers want 9:16 — every platform has its own ratio, so here is how to choose a rectangular crop without cutting the wrong thing.
The same photo has to work as an avatar, a cover and a Story, and every platform wants a different aspect ratio. Crop to the wrong ratio and the platform either stretches the image or cuts away the content that matters. Here is how the common ratios are used — TwoThink cropping is rectangular only: there is no circular avatar and no custom mask, so crop a circle inside the app itself.
1:1 square
1:1 shows up for WeChat avatars, Xiaohongshu covers and e-commerce hero images. Keep the subject in the middle with some breathing room around it so the crop does not cut the important parts. Pick the 1:1 preset in Crop Image and drag the selection box to reposition it.
16:9 landscape
16:9 is common for Bilibili covers, YouTube thumbnails and slide backgrounds. It suits landscapes, full product shots and horizontally laid-out posters. If the original was shot vertically, forcing 16:9 throws away a lot of the top and the bottom; use a landscape source instead, or Resize Image and add the padding yourself in an editor.
9:16 portrait
9:16 is the norm for short-video covers, Stories and Reels. Full-body photos and vertical posters fit it best. Before cropping, check that the subject lands completely inside the frame, and do not push the head or the feet too close to the edges.
How cropping fits with the other tools
- Still too large after cropping → Compress Image
- Need another format → Convert Image Format
- Before sending it out → Remove Image Metadata
Everything runs locally in your browser, and files are never uploaded to a server.
One caveat
Cropping discards pixels, and once the image is smaller, Resize Image cannot bring the detail back. Keep the original and export a cropped copy for publishing.
Try it → open Crop Image, export the same image at 1:1, 16:9 and 9:16, and compare how the framing reads on each platform.