A post with a broken or missing preview image underperforms. Check the link at compose time so creators fix missing Open Graph tags before scheduling, not after the reach is lost.
og:title / og:description / og:image exactly what feed crawlers read
canonical_url catches duplicate-parameter and tracking-URL drift
null fields surface missing tags while there's still time to fix them
Deterministic responses make before/after comparisons honest
See it work
Live demoreal endpoint
try:
result appears here
That was the real API, no signup needed. See the docs for the full reference.
Hook it up
# title, description, image, favicon and canonical URL in one GET — no key needed
curl "https://unfurlit.dev/v1/preview?url=https://example.com/blog/launch"