How to get Facebook.ui Feed 'dialog'/'popup' to display Large preview - facebook

I've been working on facebook social sharing, and I have gotten it to work via 'dialog' & 'popup' modals.
My feed is Shared on Facebook feed with the newer Large display rectangle.
I've set up all the proper parameters such as:
method:
app_id:
name:
link:
picture:
caption:
description:
display:
my page renders meta-tags with og:image, og:image_secure_ssl, og:image:height, og:image:width, with their respective content="image/height/width"
I've used the facebook:debugger to freshly re-scrape/cache the url.
Using FB.ui(options...), there is no parameter for height/width to be sent to facebook. My images meet the correct sizes of 1200x800+, as well as their aspect ratio of 1.9:1
What I want to achieve in my preview-modal is this:
Go to this website, and click on the round black facebook share icon:
http://www.violetgrey.com/violet-files/top-flight/the-golden-eye?icl=section_1_hero_v2_1&icn=hero_image
The much larger preview
My current preview-modal display currently is more like:
Go to this website, and click on the facebook share blue button:
https://www.everlane.com/invite
The small square preview
I really like the bigger share modal preview, because it looks better imo.
Do you guys have any advice as to how I can proceed?

To get the large preview, you can either rely on the Share Dialog or open up the plain old https://www.facebook.com/sharer/sharer.php?u=(http://yourURL.com/) in a popup. They both use the Open Graph metadata you set in the head.
The Feed Dialog can be used to override the OG meta, so you can specify a title, description, picture, but there's no way to set the picture's dimensions or the layout of the dialog...

Related

Get an image from a canvas HTML element in flutter?

In my flutter application, there is an image I would like to show that comes from another website. On that website, the image is actually a <canvas> element in HTML. I have seen resources about turning the Flutter Canvas into an image, or turning one's own <canvas> element into an image in JavaScript, but never anything about getting it from an external page.
The site I am trying to use is the NOAA Radar view. I could use a WebView to show the entire site but that seems needlessly heavy when I just need a still image.
What would be the best way about getting a still image from the site's <canvas> tag. I tried performing a http GET on the URL but there is no <canvas> tag present there when I do it in curl (via the html package). I believe this is because the canvas is rendered with JavaScript after the page loads.

Facebook share full size image with a quote

I want to be able to have a link on my website that upon clicking it opens a Facebook share dialog containing the image displayed with full size along with a custom text quote.
The 2 options that I tried with the Facebook share dialog don't achieve that result:
The first option is to use https://www.facebook.com/dialog/share?app_id=3xxxxxx334&quote=Some%20quote&href=https%3A%2F%2Fwww.example.com%2Fsome_page, and use og:image tag on www.example.com/some_page with the image that I want to display
The problem with this approach is that the image is displayed cropped to match the aspect ratio that the Facebook uses (1.9:1) which is different than the aspect ratio that I use for the image (1.3:1)
The second option is to use https://www.facebook.com/dialog/share?app_id=3xxxxxx334&media=[%27https%3A%2F%2Fwww.example.com%2Fsome_img.jpg%27] with the link of the image that I want to display
This approach displays the image in full size in Facebook, however the problem is that it doesn't allow adding any text quote with the image, any use of quote or description query parameters seems to be ignored by Facebook
So my question is there a way to combine the 2 methods such that the image gets displayed with full size along with a custom text quote?

hide an image from facebook

I want Facebook to ignore a particular image on a page. Is there any tag I can use that will hide an image from Facebook when users share a page?
We are using Joomla 3.4. The article pages that have an intro section that displays on category listing pages but is hidden on the actual article page. The intro section has a thumbnail 75 x 75.
In the main body of the article there is a larger image that we would like to display on Facebook but the og:image always selects the thumbnail first.
Is there any way I can add some parameter to the thumbnail so that it will be ignored?
Why don't you explicitly specify the larger image in your og:image tag? If you specify more than one og:image, as far as I know the first one is selected.
See
https://developers.facebook.com/docs/sharing/webmasters#images
https://developers.facebook.com/docs/sharing/webmasters/optimizing#cachingimages
https://developers.facebook.com/docs/sharing/best-practices#images

How does one display a Wordpress website within 'Static Html: iFrame Tabs' in Facebook so that it adjusts to the page's content height?

I have tried various solutions to get the iframe to adjust according to the website's content height, so that I can do away with vertical scrollbars, but cannot get a satisfactory solution.
Many solutions ask for a section of code to be added on the 'server side'. If that means I have to edit lines of code within my Wordpress files, where would I do this?
Here is a link to the iframe in question.
Rather than try to adjust the Facebook page to fit your WordPress install, you're better off changing your WordPress theme to deal with being shown in a Facebook iframe.
When displayed in the iframe, you should have a theme that is fixed-width to your canvas, and no sidebars. Just a content pane. You would then have your regular theme for when visitors arrive outside of a Facebook frame.
The Virtual Theme plugin looks like it could help with this. I've never used it personally.

Posting page with dynamic image on Facebook

I have a site in which the user creates a dynamic image, and would like the user to be able to post her creation on Facebook. The way I wanted to achieve this is via the standard "like" and "share" buttons ( using XFBML) - I dynamically change their URL to a page containing the user image.
The problem is that Facebook posts the correct URL but with a generic picture, and not the user generated picture.
In the past I used to give the image url - and then I would get the right picture. But this is not what I wan't now - I wan't the link to be to a full feature page.
The target page does specify og:img to the dynamic image - but it seems FB does not use it...
Any ideas how I can control the image FB shows on the post?
There are some restrictions on the image
the thumbnail's width AND height must be at least 50 pixels, and cannot exceed 130x110 pixels. The ratio of both height divided by width and width divided by height (w/h, h/w) cannot exceed 3.0
http://developers.facebook.com/docs/share/