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Understanding how does Facebook scraped your site

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Viewing 11 posts - 1 through 11 (of 11 total)
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  • jooservices Friend
    March 10, 2015 at 3:39 pm #204523

    At first we need to understand about Opengraph.
    <blockquote>The Open Graph protocol enables any web page to become a rich object in a social graph. For instance, this is used on Facebook to allow any web page to have the same functionality as any other object on Facebook.

    While many different technologies and schemas exist and could be combined together, there isn’t a single technology which provides enough information to richly represent any web page within the social graph. The Open Graph protocol builds on these existing technologies and gives developers one thing to implement. Developer simplicity is a key goal of the Open Graph protocol which has informed many of the technical design decisions.</blockquote>

    Facebook ( and some Social Network and Search Engine ) will use that to determine your site data.
    In basic:
    When you post something or share site URL on Facebook. It’ll request to crawl that site.
    If site provided Opengraph. It’ll be used. If not they’ll use standard way with HTML tags .

    So now we understand that we need to provide Opengraph on site. But how ?
    – We need to find out data on site. In basic with
    <blockquote>og:type
    og:title
    og:url
    og:image
    og:description</blockquote>

    These data can extract by get whole site content before it render and parsing HTML to extract it.
    And now there are few some limited of it.
    – For different view we need different content. For homepage we need to get data from WHOLE site HTML, but for view=article we only need extract it from $article->introtext ( or $article->fulltext ). And also for article view we can extract og:image from article image params ( and / or in content ).
    – We want to custom data for different purpose.
    – We want to provide different data for different purpose. For sample. You have “18+” photo on your article. But when share it on Facebook you don’t want to use that, instead of it use “censored” image.

    Yup ! There are few sample.
    And how to solve it ?

    I have just made Crex Opengraph to service it. Here is sample

    https://www.facebook.com/photo.php?fbid=780462982035547&set=a.153480104733841.40143.100002155587121&type=1

    For different option ( component ) and view page you can implement your own class to provide different for data parsing.
    For image it’ll automatic check image if valid and provide much more useful information for Opengraph. ( Image with Opengraph must be large or equal than 200 x 200 ).
    Override anything you want without 1 line core hacking ! Poo !
    And it’s free to use and fork on Git.

    https://github.com/jooservices/CrexOpengraph

    Just let me know if you want to have any custom or you have any ideas 🙂

    Thank you,
    Viet Vu

    Natia Gabrichidze Friend
    March 10, 2015 at 6:13 pm #562463

    @jooservices I am not sure I got correctly everything you wrote here. Can you please tell me step by step what to do, in order to fix the problem?

    jooservices Friend
    March 11, 2015 at 1:18 am #562476

    Hi there
    Just wonder which part you are not understand.
    At first please check document about Opengraph to know how does Facebook work. Than after that you can implement that. My plugin prepare base code for you already.

    Thank you,
    Viet VU

    jooservices Friend
    April 27, 2015 at 8:47 am #568422

    Hi there
    There are stil many topic about this issue.
    # Actually it’s not JA issue. Template just provide how your site look on browser. It can’t function as parser to extract site data.
    # The only thing we need to know / to do here is: Provide right Opengraph meta !
    — You need to know which data you want to use. Some users need image from content, some users need image from params and another users will need another way.
    — Than provide it your document <head>

    That’s all about this issue 🙂

    Thank you,
    Viet Vu

    jooservices Friend
    April 27, 2015 at 8:47 am #733518

    Hi there
    There are stil many topic about this issue.
    # Actually it’s not JA issue. Template just provide how your site look on browser. It can’t function as parser to extract site data.
    # The only thing we need to know / to do here is: Provide right Opengraph meta !
    — You need to know which data you want to use. Some users need image from content, some users need image from params and another users will need another way.
    — Than provide it your document <head>

    That’s all about this issue 🙂

    Thank you,
    Viet Vu

    lovedigit Friend
    May 16, 2015 at 3:26 pm #570798

    How to install it on joomla? It says unable to find install package.

    1. z_00129
    lovedigit Friend
    May 16, 2015 at 3:26 pm #735860

    How to install it on joomla? It says unable to find install package.

    jooservices Friend
    May 17, 2015 at 3:48 am #570812

    Hi there
    Yes . Confirmed it’s bit trouble with install package. But you can pull source code from repo and update manifest file to do repacking 🙂
    I’ll check this later.

    Thank you,
    Viet Vu

    jooservices Friend
    May 17, 2015 at 3:48 am #735874

    Hi there
    Yes . Confirmed it’s bit trouble with install package. But you can pull source code from repo and update manifest file to do repacking 🙂
    I’ll check this later.

    Thank you,
    Viet Vu

    jooservices Friend
    June 1, 2015 at 10:48 pm #572512

    Hi there
    I have updated this plugin with tons of changed
    – Support Twitter cards & Google meta
    – Add more Opengraph for website type

    $this->def('og:street-address', $params->get('og:street-address'));
    $this->def('og:city', $params->get('og:city'));
    $this->def('og:postal-code', $params->get('og:postal-code'));
    $this->def('og:country-name', $params->get('og:country-name'));
    $this->def('og:email', $params->get('og:email',JFactory::getConfig()->get('mailfrom')));
    $this->def('og:phone_number', $params->get('og:phone_number'));
    $this->def('og:fax_number', $params->get('og:fax_number'));

    – You can select default your lang & alt language . ( actually it’s already can detect your site language )

    It should be very easy to use and implement as your own way !

    Just pull and use phing to build install package.

    As far i have checked . This plugin can provide almosts meta . Compared with WordPress’ plugin and JED

    Thank you,
    Viet Vu

    1. 2015-06-01_22-46-22
    2. 2015-06-01_23-17-12
    3. 2015-06-01_23-25-05
    jooservices Friend
    June 1, 2015 at 10:48 pm #737548

    Hi there
    I have updated this plugin with tons of changed
    – Support Twitter cards & Google meta
    – Add more Opengraph for website type

    $this->def('og:street-address', $params->get('og:street-address'));
    $this->def('og:city', $params->get('og:city'));
    $this->def('og:postal-code', $params->get('og:postal-code'));
    $this->def('og:country-name', $params->get('og:country-name'));
    $this->def('og:email', $params->get('og:email',JFactory::getConfig()->get('mailfrom')));
    $this->def('og:phone_number', $params->get('og:phone_number'));
    $this->def('og:fax_number', $params->get('og:fax_number'));

    – You can select default your lang & alt language . ( actually it’s already can detect your site language )

    It should be very easy to use and implement as your own way !

    Just pull and use phing to build install package.

    As far i have checked . This plugin can provide almosts meta . Compared with WordPress’ plugin and JED

    Thank you,
    Viet Vu

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Viewing 11 posts - 1 through 11 (of 11 total)

This topic contains 11 replies, has 3 voices, and was last updated by  jooservices 9 years, 7 months ago.

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