Why OG images matter
Your OG image is the visual users see when your startup link is shared on X, LinkedIn, Slack, Facebook, and founder communities. A weak preview can reduce clicks before people visit your site.
Social preview tool
Free OG Image Checker
Fetch the social preview image from any public page and check whether the OG image is clear, properly sized, and ready to share.
OG image checkerOpen Graph image checkersocial preview image checker
What to check
- Use a wide 1200 by 630 image for share cards
- Keep important text away from the edges
- Make the image clear enough for directory and community shares
Live image check
OG image preview
Your OG image will appear here.
Enter any public page URL to fetch og:image and twitter:image tags.
What this checker finds
The checker fetches the public page, reads og:image and twitter:image tags, resolves relative URLs, and previews the discovered social image in a share-card layout.
How this supports distribution
Strong social previews help launch posts, directory listings, and community shares look trustworthy. SubmitWell helps after that by manually submitting your startup to relevant directories.
Step by step
How to use the OG Image Checker
Use this workflow to get more useful output from the tool and make the page stronger before you share, launch, or submit your startup to directories.
- 1
Enter one public page URL and fetch the Open Graph image.
- 2
Review the discovered og:image and twitter:image values.
- 3
Preview the image in a social card layout.
- 4
Fix missing, broken, or badly cropped images before sharing the page.
What to check before you move on
- ✓The OG image is public and loads without authentication.
- ✓The image is close to 1200 by 630 pixels for wide previews.
- ✓Important text is not too close to the image edge.
- ✓The preview image matches the page topic.
Common mistakes to avoid
- !Using an image that only works locally.
- !Letting social platforms choose a random page image.
- !Using tiny text that becomes unreadable in preview cards.
- !Forgetting to update OG images after a homepage redesign.
SEO workflow
What to do after using this tool
A free tool can fix one part of your startup visibility stack. The bigger goal is to make your site easier to understand, easier to share, and easier to discover through search and trusted directory profiles.
Update your Open Graph tags if the image is missing.
Check the full meta tag setup after fixing the image.
Use the preview image when posting on X, LinkedIn, and launch communities.
Submit the page to directories once the share preview is ready.
Done-for-you option
Checked the SEO basics? Build the visibility layer next.
These free SEO tools help you clean up on-page signals. SubmitWell handles the off-page discovery work by manually listing your startup on relevant directories.
- Manual directory submissions for startup visibility
- Report with submitted links and screenshot proof
- Guaranteed DR growth options on paid plans
- 30-day money-back guarantee
Frequently asked questions
What size should an OG image be?+
A common safe size is 1200 by 630 pixels. It works well for wide preview cards across most social platforms.
What happens if my page has no og:image?+
Many platforms may show a blank card, a random image, or only text. Adding a specific og:image gives you more control.
Can directory listings use OG images?+
Some directories and launch platforms read social metadata automatically, so a strong OG image can improve how your product appears after submission.
More free startup tools
Open Graph Tag Generator
Fill in your page details to generate Open Graph and Twitter Card meta tags with live social preview cards and copy-ready HTML.
Meta Tag Checker
Enter any URL to fetch title tags, meta descriptions, Open Graph tags, Twitter Cards, canonical URLs, robots tags, and favicon links.
Favicon Checker
Enter any domain and preview its favicon at 16px, 32px, 64px, 128px, and 256px to check whether the icon stays crisp.