Facebook post image size: 1200 by 630
1200 by 630 is the standard feed and link preview image. It simplifies to 40:21, which is about 1.9:1, and comes to 0.76 megapixels.
At a glance
- Dimensions
- 1200 × 630 pixels
- Simplified aspect ratio
- 40:21
- Decimal ratio
- 1.9:1
- Megapixels
- 0.76 MP (756,000 pixels)
- CSS aspect-ratio
- aspect-ratio: 40 / 21;
- Preset category
- Social
- Where it is used
- Feed images and the shared link preview card
In detail
The greatest common divisor of 1200 and 630 is 30, which leaves 40:21. That is not a ratio anyone would choose deliberately; it is what you get from applying the roughly 1.91:1 link preview shape to a round 1200 pixel width. The decimal value is 1.9048, close enough to 1.91 that the two are used interchangeably in practice.
The same pixels do double duty. This is the size the link preview card uses when a page is shared, which is why 1200 by 630 has become the default across the web for the image a page nominates for sharing. Producing one asset at this size covers both the feed post and the preview card.
It is not 16:9, and the difference is the usual trap. A 1920 by 1080 video still scaled to 1200 wide is 675 tall, 45 pixels more than this frame, so it needs a crop rather than a resize. Doing it the other way, stretching 675 down to 630, squashes every face in the picture by about seven percent.
The image resizer carries this exact size as its OG and link preview preset, and the social post generator composes a Facebook post at 1200 by 630. Either produces the frame without typing dimensions, which matters more here than elsewhere because one asset at this size covers both the feed image and the shared link card.
Examples
gcd(1200, 630) = 30
1200 / 30 = 40
630 / 30 = 21
1200 / 630 = 1.9048 // quoted as 1.91:116:9 at 1200 wide -> 1200 x 675
target -> 1200 x 630
crop -> 45 pixels of height, not a resizeThings that catch people out
- Resizing a 16:9 image into this frame distorts it. Crop the height first, then resize.
- The preview card can crop further in some placements, so keep text away from the outer edges.
- This size is platform guidance that has moved before. The ratio is the durable part; the exact pixels are not.
Try it: Aspect Ratio Calculator
Enter a width and a height, or a ratio and one dimension, and it solves the missing one, simplifies the ratio, counts the megapixels and gives you a copyable CSS value.
Aspect Ratio Calculator
LOCAL · Browser-OnlyCalculate and convert aspect ratios for images, videos, and screens
1920 x 1080px · 16:9 · 1.7778:1
Common Aspect Ratios Reference
| Ratio | Decimal | Common Use |
|---|---|---|
| 16:9 | 1.778 | Widescreen TV, YouTube, monitors |
| 4:3 | 1.333 | Classic TV, iPad, presentations |
| 1:1 | 1.000 | Instagram square, profile pictures |
| 21:9 | 2.333 | Ultrawide monitors, cinema |
| 9:16 | 0.563 | Phone vertical, TikTok, Reels |
| 3:2 | 1.500 | 35mm photography, MacBook |
| 2:3 | 0.667 | Portrait photography, posters |
| 5:4 | 1.250 | Large format photography, older monitors |
| 32:9 | 3.556 | Super ultrawide monitors |
| 2.39:1 | 2.390 | Anamorphic cinema, widescreen films |
Related Image and canvas sizes
All image and canvas sizes →OG image size: 1200 by 630
The 1200 by 630 open graph image, why it became the default sharing size, the markup that nominates it, and the rules that make it actually appear.
LinkedIn post image size: 1200 by 627
The 1200 by 627 feed image, why it is three pixels shorter than the 1200 by 630 link preview shape, and whether the difference is worth a separate export.
Instagram landscape size: 1080 by 566
The widest frame the feed accepts, why 1080 by 566 simplifies to the awkward 540:283, and how it relates to the 1.91:1 link preview shape.
Facebook cover photo size: 820 by 312
The cover photo at 820 by 312, why it reduces to the awkward 205:78, and how the desktop and mobile crops take different parts of the same image.
LinkedIn banner size: 1584 by 396
The profile banner at 1584 by 396, an exact 4:1 strip, where the profile photo overlaps it, and how much of the width a narrow screen removes.
Pinterest pin size: 1000 by 1500
The 2:3 pin at 1000 by 1500, why a portrait ratio wins in a masonry feed, and what happens to a pin that is taller than the recommended shape.
Tools for this
- Image Resizer Free online image resizer - resize images to exact dimensions, percentage, or common presets
- Social Media Image Generator Free online social media image generator - create correctly sized images for social media platforms
- Image Cropper Free online image cropper - crop images with preset aspect ratios and free-form selection