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The og:image tag can be used to specify the URL of the image that appears when someone shares the content to Facebook. The full list of image properties can be found here. Requirements. The minimum allowed image dimension is 200 x 200 pixels. The size of the image file must not exceed 8 MB.
- Sharing Debugger
Sharing Debugger lets you preview how your content will look...
- Messenger
Linking App and Page IDs. Developers can specify a Page ID...
- Best Practices
Use App Links to link to a specific location in your app...
- Sharing Debugger
There is also a new format. <meta property='og:image' content='http://yoursite.com/INSERT_YOUR_IMAGE.jpg'/>. More details here and here. Also the facebook share docs as posted by eliah on this page. Be careful about the details, e.g. it doesn't seem to like relative URLs.
How to Specify a Link Title and Image for a Shared Link Overview. This topic describes how to specify the title and image that is displayed for a URL hosted on your server. It assumes that you have a web host and are able to modify it.
When you share a link -- such as a YouTube video, webpage or image -- a thumbnail/photo automatically generated when it's displayed on your wall. The thumbnail is generated automatically as the Facebook system scans the link for any associated image files.
14 lip 2011 · 1. Include the Open Graph XML namespace extension to your HTML declaration. <html xmlns="http://www.w3.org/1999/xhtml". xmlns:fb="http://ogp.me/ns/fb#">. 2. Inside your <head></head> use the following meta tag to define the image you want to use.
16 cze 2020 · You will need two pieces of information in order to create your HTML code: The landing page URL. The web address (URL) of the page/post/site you want the user to land when they click on the image. File URL of image. This is the URL specifying where the image is located (or hosted) online.
3 lis 2021 · Every website system has a way to specify which image Facebook uses for a page on your website. If you don’t specify what image Facebook should use when linking to your blog post, it’s going to look like the image below: no photo.
