Social Media Image Checker: Check Dimensions Before Upload
Upload an exported image locally to identify its width, height, ratio, file size, format, and the closest platform image-size guide before you publish.
Checks
width, height, ratio
Matches
platform image workflows
Useful for
social, ecommerce, YouTube
Privacy
local browser check
Start with the file you already exported
Many social image problems come from exporting the wrong canvas: a story as a square, a banner as a compressed preview, a product image too small for zoom, or a website share image that does not fit Open Graph previews.
This checker gives you the raw facts first. After that, open the matching platform page for crop behavior, safe-zone guidance, and source notes.
Check image dimensions locally
Choose an image to read its width, height, aspect ratio, file size, format, orientation, and closest image workflow. The check runs in your browser and does not upload or store your image.
Drop an image here or choose a file.
JPG, PNG, GIF, WebP, and AVIF files are read locally in your browser.
Platform routing matrix
Use the checker result as the raw file evidence, then choose the page that matches the publishing surface and crop risk.
| Asset type | Dimension signal | Open guide |
|---|---|---|
| Instagram feed image | Square, portrait, or landscape feed creative | Instagram Post Size |
| Instagram Story or Reel cover | Vertical 9:16 image or Reel cover reference | Instagram Story Size |
| Facebook cover photo | Wide cover image with mobile and desktop crop risk | Facebook Cover Photo Size |
| LinkedIn banner | Wide personal profile or Page cover image | LinkedIn Banner Size |
| Website share image | Open Graph card preview image | Open Graph Image Size |
| Marketplace or product photo | Square or high-resolution ecommerce product image | Etsy Listing Image Size |
Where to go after the check
Instagram image sizes
Choose feed, Story, or Reel cover guidance.
Banner Size Checker
Check wide profile, channel, and social header artwork.
Open Graph Preview Checker
Check website preview images before sharing.
Etsy Listing Image Size
Check marketplace photo dimensions and crop safety.
Shopify Product Image Size
Check ecommerce product image dimensions.
Aspect Ratio Calculator
Calculate a replacement canvas before re-export.
Social media image checker FAQ
What does the social media image checker read?
It reads image width, height, aspect ratio, file size, format, orientation, and the closest image-size workflow that ImageSizeKit can recommend.
Can I use it for Instagram, LinkedIn, Facebook, Open Graph, Etsy, or Shopify images?
Yes. Use it as a first-pass local check, then open the matching platform guide for crop, safe-zone, and upload notes.
Does ImageSizeKit upload my image?
No. The checker reads image dimensions locally in your browser and does not upload or store your image.