AscendLab

Developer tools · Browser-side · No account

Open Graph Image Size Checker

Developer toolsPublic tools run in your browser unless a page says otherwise.No account is required for this tool.
Free browser tool

Open Graph Image Size Checker

Check social sharing image dimensions before publishing. Review 1200 x 630 px fit, aspect ratio, minimum width, and file size with browser-side processing.

Upload image locally
Select an image from your computer. This tool is designed for browser-side image reading based on the current public implementation.

Try a common OG image case

Common target

Use 1200 x 630 px for general Open Graph sharing previews. Square or vertical images may crop in social cards.

Platform note

This checker reads image dimensions in your browser. Social platforms may cache, crop, or recompress images differently after you publish.

Image check
Upload an image to see dimensions and sharing checks.
No image selected yet. Use a local export from your design tool, CMS, or OG image generator.
Quick answer

An Open Graph image size checker reads a local image and checks whether it fits common social card dimensions.

It is useful before attaching an image to og:image, Twitter cards, or social preview metadata.

Best inputs

Final exports

Use the exact PNG, JPG, or WEBP you plan to publish as a social image.

Preview images

Check blog, tool, docs, product, and landing page sharing graphics.

Image check method
The browser reads the selected file and reports its natural dimensions.

The tool checks dimensions, width, approximate 1.91:1 aspect ratio, and practical file size guidance.

It is designed for browser-side processing based on the current public implementation. It does not fetch remote images or control exact cropping on every social platform.

SEO workflow fit

Use this before Meta Tag Previewer when preparing Open Graph images for pages, articles, and tool launches.

After deployment, use live social card debuggers to confirm how platforms render the final URL.

Common use cases
These are the jobs people usually mean when they search for an Open Graph image size checker.

Blog cover QA

Check a post image before adding it as og:image.

Tool launch cards

Verify sharing graphics for tool pages and product updates.

CMS image review

Confirm image dimensions before uploading assets into a CMS.

Design handoff

Give designers a simple size check for social preview exports.

Example, assumptions, and limitations
Social image size checks are practical guidance, not platform guarantees.

Example

A 1200 x 630 px PNG passes the common Open Graph size and ratio checks.

Assumption

The selected local file is the same image you plan to publish.

Limitation

The tool does not inspect remote URLs, cache state, platform-specific crops, or social debugger results.

Frequently asked questions

How is the image checked?

The selected file is inspected in the browser for this tool based on the current public implementation.

What size should I target?

1200 x 630 px is a common Open Graph image target.

Can it check a remote image URL?

No. This version checks selected image files in the browser and does not fetch remote image URLs.

Can platforms still crop the image?

Yes. Different platforms and layouts can crop or scale previews differently.

Suggested workflow

Social preview image path

Prepare the image dimensions, check Open Graph fit, and preview the metadata before publishing.