Open Graph Image Size Calculator
Calculate optimal Open Graph and Twitter Card image dimensions for social media sharing. Enter values for instant results with step-by-step formulas.
Formula
Aspect Ratio = Width / Height | Megapixels = (W x H) / 1,000,000
Open Graph images are evaluated based on dimensions (width x height in pixels), aspect ratio (width divided by height), and file size. Each social platform has specific recommended dimensions and maximum file sizes. The standard Open Graph image is 1200x630 pixels with a 1.91:1 aspect ratio.
Worked Examples
Example 1: Facebook Link Share Image
Problem: Determine if a 1200x800 pixel image at 150 KB is suitable for Facebook Open Graph sharing.
Solution: Recommended: 1200 x 630 pixels (1.91:1 ratio)\nYour image: 1200 x 800 pixels (1.5:1 ratio)\nWidth: 1200px meets minimum (600px) - PASS\nHeight: 800px meets minimum (315px) - PASS\nAspect ratio: 1.5:1 vs recommended 1.91:1 - MISMATCH\nFile size: 150 KB under 8 MB limit - PASS\nThe image will be cropped top and bottom to fit the 1.91:1 display area
Result: Score: 75/100 (Good) - Correct the aspect ratio to 1.91:1 for best results
Example 2: Pinterest Pin Image Optimization
Problem: Create optimal pin dimensions for Pinterest from a landscape photo at 1920x1080.
Solution: Pinterest recommended: 1000 x 1500 pixels (2:3 ratio)\nYour image: 1920 x 1080 pixels (16:9 ratio)\nThe image needs to be reoriented to portrait orientation\nCrop to 1000 x 1500: Remove 920px width, extend/crop for height\nAlternative: Use 1080 x 1620 (maintains width, adjusts height)\nFile size should be under 10 MB\nPinterest favors taller images with 2:3 ratio for maximum feed visibility
Result: Resize to 1000x1500 (2:3 ratio) for optimal Pinterest display
Frequently Asked Questions
What are the recommended Open Graph image dimensions?
The recommended Open Graph (og:image) dimensions are 1200 x 630 pixels with an aspect ratio of 1.91:1. This size works optimally for Facebook, LinkedIn, and most platforms that support the Open Graph protocol. The minimum recommended size is 600 x 315 pixels, but using the larger 1200 x 630 dimensions ensures your images look sharp on high-density displays and when shared as large link previews. Facebook specifically recommends images at least 1080 pixels wide for optimal display quality. Using images smaller than the minimum dimensions may result in a small thumbnail preview instead of a large, attention-grabbing card layout.
What is the difference between Open Graph and Twitter Card images?
While both Open Graph and Twitter Card protocols serve similar purposes of controlling how shared links appear on social media, they use different meta tags and have slightly different specifications. Open Graph uses the og:image meta tag and was created by Facebook, while Twitter Cards use twitter:image and were developed by Twitter (now X). Twitter supports two main card types: Summary Card (square, 120x120 to 4096x4096 pixels) and Summary Card with Large Image (2:1 ratio, minimum 300x157 pixels). In practice, Twitter will fall back to Open Graph tags if Twitter Card tags are not present. For maximum compatibility, most developers include both sets of meta tags on their pages.
How does image file size affect social media sharing performance?
Image file size directly impacts how quickly your social media preview loads when someone shares your link. Facebook recommends keeping og:image files under 8 MB, while Twitter limits files to 5 MB for summary cards and 15 MB for player cards. Larger files take longer for social platforms to fetch and cache, which can result in broken or missing previews when a link is first shared. Most social platforms cache images after the first fetch, but a slow initial load means early sharers may see a broken preview. For optimal performance, aim for JPEG images under 200 KB for photographs and PNG images under 100 KB for graphics with text, while maintaining the recommended dimensions.
What image format should I use for Open Graph images?
JPEG is the most widely supported and recommended format for Open Graph images, especially for photographs and complex images with many colors. JPEG files offer excellent compression ratios while maintaining visual quality at settings around 80-85% quality. PNG is preferred for images that contain text, logos, or graphics with sharp edges and flat colors, as it preserves these elements without compression artifacts. WebP is supported by most modern platforms but may not work on all social media crawlers, so JPEG and PNG remain the safest choices. Avoid using SVG, GIF (animated or static), or BMP formats for og:image as support is inconsistent across platforms. Always include the og:image:type meta tag to specify the MIME type.
How do I test how my Open Graph images will appear when shared?
Each major social platform provides debugging tools to test how your shared links will appear. Facebook offers the Sharing Debugger at developers.facebook.com/tools/debug, which shows exactly how your link preview will look and allows you to clear cached versions. Twitter provides the Card Validator at cards-dev.twitter.com/validator for testing Twitter Card previews. LinkedIn has the Post Inspector at linkedin.com/post-inspector for testing LinkedIn share previews. After making changes to your Open Graph tags, you must use these debuggers to clear the cached version, as platforms aggressively cache social preview data. It is good practice to test on all platforms before publishing important content.
What is the safe zone for text in Open Graph images?
When designing Open Graph images that contain text or important visual elements, you should keep all critical content within a safe zone that accounts for potential cropping across different platforms and devices. The recommended safe zone is roughly the center 80% of the image, meaning you should maintain margins of approximately 10% on each side. For a 1200 x 630 image, this means keeping important content within a 960 x 504 pixel area centered in the image. Different platforms crop images differently when displaying in feeds, cards, and notifications, and mobile views often crop more aggressively than desktop views. Text should be large enough to remain readable even at smaller display sizes, typically using a minimum font size equivalent to 40 pixels at 1200px width.