correcting FB meta tags [duplicate]

This question already has answers here: Closed 11 years ago.

Possible Duplicate:

How does Facebook Sharer select Images?

Facebook share url thumbnail problem

I discovered, after testing, that I had the wrong meta tags for image or url. After correcting the information on my webpage, FB still seems to reflect the old information. Is there something I can do to correct this? Or doe开发者_运维知识库s FB just take a certain length of time to kick in and if so, how long?

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Changing the tags should be enough, but there are some tags that aren't allowed to change past certain limits (check here: https://developers.facebook.com/docs/opengraph/ under "Editing Meta Tags"). You can use the linter tool to check that your tags are correct, or see, if they are wrong - why they are wrong:

https://developers.facebook.com/tools/debug