How can I automatically update the preview image on a website shared on Facebook?

I tried the code below, but it doesn't seem to be working. Is it possible to dynamically achieve this? If yes, how can I do it? I initially used the og:image meta tag, but it didn't work due to browsers not reading JavaScript. Any assistance would be appreciated.

<link rel="image_src" href="" id="ShareImageID"/>
<script>
var ShareImageIdVar = location.href.match(/\d+/);
document.getElementById('ShareImageID').href = "http://www.mysite.com/Images/"+ ShareImageIdVar +".jpg";
</script>

The concept is that Facebook will always search for

<link rel="image_src" href="" id="ShareImageID"/>

and utilize the image link within the href as the primary display. However, if it's unable to find it, it will select a random image instead.

javascriptfacebook

Answer №1

Facebook caches the og:image for each URL, meaning it does not refresh automatically. To update the image displayed on Facebook, you need to generate a unique URL for each image by adding a GET parameter and then updating the image URL in the og:image tag on your server.

Remember that any likes associated with the post will also be linked to the updated URL.

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