Social media image size calculator
Choose a post type, check recommended pixels and ratio, then open the resizer.
Presets reviewed: 2026-10-21
How to calculate social image size
- Select a platform and post type.
- Review pixels and aspect ratio.
- Open the resizer or cropper with the target.
Instagram and YouTube image dimensions
Check common pixels for Instagram square and portrait posts, stories, YouTube thumbnails, Facebook shares, and X posts.
Match the ratio before resizing
Changing pixels alone can stretch an image. Crop around the subject first when the source ratio differs.
Preset maintenance
Platform recommendations can change, so presets carry a review date. Confirm official guidance for paid campaigns.
FAQ
Can platform sizes change?
Yes. Presets include a review date; verify official help for important campaigns.
Does this crop my image?
The calculator shows dimensions and links them to the resizer and cropper.