How to Preview How Your Link Looks When Shared

You’ve written the perfect meta title and description for a page, but the first time someone actually shares the link on Discord or X, the preview card shows a cropped image, a truncated title, or a description that cuts off mid-sentence in an awkward spot. Open Graph tags control how a link preview renders across social platforms, but each platform enforces its own character limits and image dimension expectations, which means a title and description tuned for one platform can break or truncate oddly on another.

The frustrating part is that you usually only discover this after actually posting the link somewhere and seeing the broken preview live — by which point people have already seen the awkward version.

What Open Graph tags actually control

Open Graph meta tags (og:title, og:description, og:image, and related tags) are metadata embedded in a page’s HTML that social platforms read to build the preview card shown when a link is shared — the title, description snippet, and thumbnail image people see before clicking through. Different platforms enforce different practical limits: how many characters of title or description actually display before truncation, and what image aspect ratio renders cleanly versus gets awkwardly cropped, varies meaningfully between Facebook, X, and Discord.

The practical need is previewing exactly how your specific tags will render on each platform before publishing, rather than guessing and finding out only after the link is already live and shared.

Why people get stuck here

• Truncation limits aren’t documented consistently. Each platform has its own practical character limits for title and description display, and these aren’t always clearly published or kept up to date by the platforms themselves.
• Image cropping varies by platform. The same og:image can render cleanly on one platform and get awkwardly cropped on another, depending on each platform’s expected aspect ratio.
• Testing requires actually posting the link. Without a preview tool, the only way to see the real rendered result is to share the link somewhere and check — which means the broken version is already visible to whoever sees that post.
• Writing tags without knowing display limits invites truncation. A well-crafted description that reads perfectly in full can truncate mid-word or mid-thought if it exceeds a specific platform’s display limit.

What a good Open Graph previewer looks like

Multi-platform preview

Seeing how the same tags render across Facebook, X, and Discord in one place reveals platform-specific truncation or cropping issues before you publish.

Per-platform character limits shown clearly

Knowing exactly how many characters of your title and description will actually display on each platform lets you write within those limits deliberately, rather than guessing.

Generated meta tags ready to use

Beyond previewing, generating the actual HTML meta tags to paste into your page saves a manual step once you’ve confirmed the preview looks right.

Common mistakes to avoid

• Writing a title or description without checking platform-specific character limits, resulting in awkward truncation once actually shared.
• Using an image with an aspect ratio that crops poorly on a specific platform, cutting off important visual content.
• Only discovering a broken preview after publicly sharing the link, rather than previewing beforehand.
• Assuming Open Graph tags update instantly everywhere — some platforms cache link previews, so a fix may not show immediately even after the tags themselves are corrected.

How to do it with Open Graph Previewer

Online Tool Store’s Open Graph Previewer previews an Open Graph link card as it would appear on Facebook, X, or Discord, with per-platform character limits and generated meta tags, entirely in your browser.

1. Open the Open Graph Previewer tool.
2. Enter your intended title, description, and image.
3. Preview how the card renders across Facebook, X, and Discord.
4. Adjust your content to fit each platform’s limits, then copy the generated meta tags into your page.

Frequently asked questions

Why does my link preview look different on different platforms?

Each platform enforces its own character limits for title and description display, and expects different image aspect ratios — the same Open Graph tags can render cleanly on one platform and truncate or crop awkwardly on another.

Why doesn’t my updated preview show up right away after I fix my tags?

Some platforms cache link preview data and don’t immediately re-fetch it after a page’s Open Graph tags change — a delay before the corrected preview appears is common and not necessarily a sign the fix didn’t work.

What image size should I use for Open Graph?

Check the specific platform’s recommended dimensions, since expectations vary — previewing your actual image across platforms is the most reliable way to confirm it won’t be awkwardly cropped before publishing.

Final thought

A link preview is often the first thing people see before deciding to click — checking it across platforms before publishing catches truncation and cropping issues while they’re still easy to fix.

Try the free Open Graph Previewer tool