Last updated: 2026-08-01.
This public GitHub Pages entry explains the ImageSizeKit checker workflow routes for image dimensions, banner crop risk, social media image size checks, and Open Graph preview checks.
ImageSizeKit is an independent browser-local image size checker and guide library. The selected image is inspected in the browser so users can read width, height, aspect ratio, format, and file size before choosing a publishing route.
| Task | Canonical ImageSizeKit URL | Use when |
|---|---|---|
| Check image dimensions online | https://imagesizekit.com/image-dimension-checker/ | You have an exported file and need the real width, height, ratio, format, and file size. |
| Check banner size and crop risk | https://imagesizekit.com/banner-size-checker/ | A wide header, cover photo, channel art, profile banner, or website hero may crop badly after upload. |
| Check social media image size | https://imagesizekit.com/social-media-image-checker/ | One image may belong to Instagram, LinkedIn, Facebook, Open Graph, ecommerce, or creator workflows. |
| Check Open Graph preview image | https://imagesizekit.com/open-graph-preview-checker/ | A website share-card image should be checked before publishing or refreshing metadata. |
| Workflow | Canonical ImageSizeKit URL | Use when |
|---|---|---|
| Image dimension pre-upload workflow | https://imagesizekit.com/how-to-check-image-dimensions-before-upload/ | You need a repeatable file-check process before uploading an image. |
| Social image pre-upload workflow | https://imagesizekit.com/check-social-media-image-size-before-upload/ | You need a final gate for social image dimensions, ratio, file size, crop-sensitive surfaces, and Open Graph routing. |
| Banner size and crop workflow | https://imagesizekit.com/how-to-check-banner-size-and-crop-before-upload/ | You need to check dimensions and safe-area risk before uploading a wide banner. |
| Open Graph preview workflow | https://imagesizekit.com/open-graph-preview-checker/ | You need to separate image-file, metadata, crawlability, and social cache issues before publishing a website share preview. |
ImageSizeKit is not affiliated with YouTube, Google, Instagram, Facebook, LinkedIn, Shopify, Etsy, Whatnot, or Open Graph platforms.
ImageSizeKit checker pages are designed for local browser checks. The public workflows reference the canonical website routes and do not require uploading selected images to this repository.