🔗 Before you share your link on WhatsApp, Facebook or LinkedIn
How your link looks on WhatsApp and Facebook
Paste the address of a page: see how it will look on WhatsApp, Facebook and LinkedIn, what stops the image or title from showing, and the exact tags to copy to fix it.
What your contacts will see
Simplified mock-ups: the exact display depends on the app, its version and the phone. The image is loaded by your browser straight from the site checked.
The checks, one by one
The complete tags, ready to copy
Paste them in the head of the page, as high as possible. Replace the values in square brackets. On WordPress, Shopify or YouCan, use the page's sharing or SEO settings instead (see the questions below).
After fixing: refresh the previews
Facebook, WhatsApp and LinkedIn keep the old preview in memory. Meta says its robot only reads a link's information again about every 30 days: force a new reading with the official tools.
WhatsApp has no public tool: Meta's Debugger reads the page again, and the preview may stay in memory on the phone. To test straight away, share the address with an extra parameter, for example ?v=2 (a common trick, not documented by WhatsApp).
What our robot read
The official rules, network by network
- og:title, og:description and og:url tags are required, in the head.
- The head must be within the first 300 KB of the page.
- og:image as an absolute address, image under 600 KB.
- Image at least 300 px wide, width-to-height ratio of 4:1 at most.
- Description on 1 or 2 lines: 80 characters are enough.
Facebook (Meta)
- Basic tags: og:url, og:title, og:description, og:image; og:type recommended.
- Image of at least 1200 × 630 px recommended, large format from 600 × 315 px, minimum 200 × 200 px.
- 1.91:1 proportions, file of 8 MB at most.
- Image address in https, og:image:width and og:image:height declared.
- The robot only accepts gzip and deflate compression; automatic update every 30 days.
- og:title, og:description, og:image and og:url tags.
- Image of at least 1200 × 627 px, 1.91:1 proportions.
- File of 5 MB at most.
- Under 401 px wide, the image shows as a small thumbnail.
Official sources, checked on 12/11/2026: WhatsApp · Meta (webmasters) · Meta (images) · Meta (mise à jour) · LinkedIn · ogp.me
None of these networks sets a maximum length for the title: our thresholds (70 characters for the title, 160 for the description) are advice to avoid cut-offs.
Frequently asked questions
I fixed my tags, but the old preview still shows. Why?
Networks keep the preview in memory. Open Meta's Sharing Debugger and run the reading again ("Scrape Again" button), then do the same with LinkedIn's Post Inspector. If you changed the image, give it a new file name: Meta keeps it cached as long as its address does not change.
Why does my image not show on WhatsApp?
Most often: image too heavy (WhatsApp asks for less than 600 KB), relative address instead of a full https:// address, image too small (under 300 px wide) or too elongated, or tags placed too low in a very heavy page.
What image should I prepare?
A 1200 × 630 px JPEG under 600 KB (200 to 300 KB leaves a margin), with the product or the message well in the centre: some screens crop the edges. Avoid small text, unreadable in a thumbnail.
Where do I change these tags on WordPress, Shopify or YouCan?
WordPress: the Yoast SEO or Rank Math plugins add a "Social" tab to each page. Shopify: Online Store, Preferences, social sharing image; product pages use the main photo. On other platforms, look for the page's "SEO" or "sharing" settings. On a hand-made site, paste the block of tags in the head.
What about Instagram, Telegram or X?
Open Graph tags are an open standard (ogp.me) read by most apps that show a link preview. X also reads twitter:card. On Instagram, a link is only clickable in the bio, stories and messages.
What happens to the address I paste?
Our server reads the page and the image once, then forgets everything: neither the address nor your IP address is stored. Private addresses (local network, the server itself) are refused. The image in the mock-ups is loaded by your browser from the site checked.
The tool says "protected page": what should I do?
Some sites block unknown robots. Facebook's robot may be accepted where ours is refused: check directly with Meta's Sharing Debugger. If it is blocked too, ask your host to allow facebookexternalhit.
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