Simple rule: use exact presets when the platform frame is fixed, and choose between fit and fill based on whether keeping the whole image matters more than full edge-to-edge coverage.
Common social media image sizes
| Use case | Typical size | Notes |
|---|---|---|
| Instagram square post | 1080 × 1080 | Good default for simple feed posts |
| Instagram portrait post | 1080 × 1350 | Takes up more vertical space in feed |
| Story / Reel cover | 1080 × 1920 | Use safe margins for text near edges |
| Facebook / Open Graph card | 1200 × 630 | Common link preview size |
| LinkedIn post image | 1200 × 627 | Very close to Open Graph proportions |
| YouTube thumbnail | 1280 × 720 | 16:9 is the main concern here |
| X post image | 1600 × 900 | Wide format, often best with stronger focal framing |
Fit vs fill
Fit keeps the whole image visible inside the target frame. That is useful when you cannot afford to lose any part of the subject, such as logos, product images, or text-heavy graphics. The tradeoff is that you may need background space around the image.
Fill crops the image to fully cover the target frame. That usually looks stronger for photos, thumbnails, and social designs, but it can cut off edges or text if the original composition is too tight.
When a background helps
Background padding is a good choice when the source image is already composed correctly but the platform shape does not match. Instead of forcing a crop, add a background that feels intentional and matches the visual context of the final post.
That is especially helpful for ecommerce images, screenshots, logos, and preview cards where the full subject needs to stay intact.
Practical workflow
- Start with the exact platform preset instead of resizing manually.
- Choose fit mode if the full image must remain visible.
- Choose fill mode if edge-to-edge coverage matters more than preserving every edge.
- Review text and faces near borders before exporting.
- Compress the final export if the platform or website still needs a lighter file.
Use the right tool on this site
Use Social Media Resizer when you want exact presets and quick export options. Use Add Background to Image when you want to preserve the whole image on a larger canvas without platform-specific presets.
FAQ
What is the difference between fit and fill for social images?
Fit keeps the whole image visible and adds space when needed. Fill crops the image so the frame is completely covered.
Do all social platforms use the same image size?
No. Each platform and surface can use different aspect ratios and dimensions, which is why presets are useful.
Which size is common for Open Graph cards?
A common Open Graph image size is 1200 by 630 pixels.