Ask facebook to re-scrape URL [duplicate]

Answer 1

Be aware that Facebook requires the parameters be passed via POST. Facebook just ignores GET requests.

Here is the code in C#.

HttpWebRequest httpRequest = (HttpWebRequest)WebRequest.Create(
    "https://graph.facebook.com/?id="
    + HttpUtility.UrlEncode("http://www.example.com/index.html")
    + "&scrape=true");
httpRequest.Method = "POST";
using (HttpWebResponse httpResponse = (HttpWebResponse)httpRequest.GetResponse())
{
    using (Stream responsestream = httpResponse.GetResponseStream())
    {
        if (responsestream != null)
        {
            using (StreamReader bodyreader = new StreamReader(responsestream))
            {
                string fbResp = bodyreader.ReadToEnd();
            }
        }
    }
}

Answer 2

       $config = array(
            "appId" => 'APP_ID',
            "secret" => 'APP_SECRET');

        $fb = new Facebook($config);
        $r=$fb->api('/','POST',array(
            'id'=>PAGE_URL,
            'scrape'=>'true'
        ));

Answer 3

You have two alternatives here in your situation

1. As per ysrb's answer loop through list of your URLs with the Open Graph Debugger tool

2. Or wait patiently for 30 days until Facebook re-scrapes your Pages as it says in documentation here

Why and when does Facebook scrape my website?

Facebook needs to scrape links shared to Facebook to know which to link preview information to show on Facebook.com or on Facebook for iOS and Android. This happens every 30 days to ensure the properties are up to date. The linked page is also scraped when the URL is entered into the Debugger Tool.

Facebook observes cache headers on your URLs - it will look at "Expires" and "Cache-Control" in order of preference. However, even if you specify a longer time, Facebook will scrape your page every 30 days.

Answer 4

You can force a re-scrape via API, as described here: https://developers.facebook.com/docs/opengraph/using-objects/#update:

POST /?id={object-instance-id or object-url}&scrape=true

(But if you don’t have a real list of the affected URLs, this is kinda moot. Then you only can wait until it happens automatically, I guess.)

Answer 5

curl --insecure "https://graph.facebook.com/?id=[YOUR-URL-TO-SCRAPE]&scrape=true"

curl should be ssl capable (as it is https://graph...)

Answer 6

You can try loop from the list of url and do

curl "http://developers.facebook.com/tools/debug/og/object?q=$url"