Send Push image is not displayed - salesforce-marketing-cloud

I'm trying to figure out why the pushes I send often arrive without an image.
I send via Marketing Cloud, the image has a weight of about 25kb and size of about 510x290.
The mobile receives the push but often it is blocked and the associated image is not displayed.
How come?
we tried changing the repository but the problem was not solved

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Facebook Share Link: Force wide image format?

I'm working on a promotion for a company.
The user writes a testimonial and uploads a photo. We then generate their story on a page like
www.example.com?id=5
We offer them to "Share" this link to Facebook. I'm using the usual og: meta tags to pass the title, image and description.
The problem is, Facebook caches url links and images the first time it sees them: likely right after the person just created it. So when they share it, it takes about 30 seconds for Facebook to cache the image and generate an accurate preview. So problem #1 the user likely doesn't see this preview during the FB share popout stage ( image is missing but text is correct ) and #2 it often appears on the timeline first as the wide image format version, give it 20 seconds, it swaps to the small shoulder thumbnail. Obviously, the company would benefit more from the wide format version. Is there any way I can make this happen? I'd forego problem #1 if I could solve problem #2. Though I accept that if the image is too small, facebook has to shoulder the image.

Windows Phone Live Tiles with Background from the Web and updated automatically.

I am currently working on a windows Phone App that is supposed to have a flipping liveTile. Here's how it is supposed to work:
The Front will be generated from UI Elements that are filled with Data pulled from a Web API. That Backside will be generated from an Image downloaded from the Web. the Idea ist to have one Image for the small liveTile size and one for the big live tile.
Can someone give me a hint, how i can update the livetile automatically without having to have the app opened? I can't do it with a Push notification because i don't have a server to do the pushing in the first place. I tried using the ShellTileSheduler and RemotImageURI property but this doesn't work for different sizes. Am i missing something? Has anyone done somehting like this and has an idea how to do it? I'm getting really frustrated.
Here is a good start to generate tile
http://blogs.msdn.com/b/andy_wigley/archive/2013/04/10/live-apps-creating-custom-tile-and-lock-screen-images.aspx

Image hiding from user

I want to make a browser game that has users guess some blurred photos of celebrities.The image will be blurred and the user will have a limited amount of time to guess what celebrity is.As time passes the the picture will become clearer.My question is:how can I stop the user from viewing the clear image ?I apply the blurr effect using css3 and send the image to the browser.I think the user can see the image without any effects on it.How can I stop that ?
The only way to implement this is by generating blurred images on the serverside, using encoded unguessable URLs, which are then loading on the client based on a timed update.
There is no way to safely hide something that it already accessible to the client.
Without changing your whole approach (e.g. to one where you send multiple images (in different levels of blurriness) one image at a time and use session tokens and a timer to determine which ones a given user is allowed access to), you can't: Any data sent to the browser is accessible to the user. If you sent a clear image and ask the browser to obscure it, then the user will have access to the clear image.
For setting blure image u can use blur value of filter property
here is example http://html5-demos.appspot.com/static/css/filters/index.html

How to ensure all images load correctly

In my HTML page I load about 40 images from the same domain (on page start up, all images load at same time). The problem is, sometimes some images don't show up, they're just a white box with a red X on the top left side. But if I try to refresh the page once (or a few times), that image then loads fine.
Does anyone know why this happens and how to ensure all images load fine?
This happens because the images aren't finished loading in time. You could try pre-loading them with javascript
What I would do is make sure the images are small (using thumbnails) so they will load. Then, load only a few at a time and load more as the page is scrolled or whenever the user requests more images.
See google images or pinterest for an example of how it would work. As you scroll the page, more images are loaded, as opposed to loading them all at once.

results are appended into iframe every invocation

I have an iframe that displays thumbnail images from Flickr in my web application. The problem, I see is when I reload the page, sometimes, I see the same set of images being appended to the earlier set of images. So I get two sets of every image and on a subsequent reload, I get 3 sets of images.
The images are part of a form. So I see multiple submit and cancel buttons as well. Any suggestions on what might be causing this and how I can avoid this from happening?
Pardon my ignorance. I was not resetting my server side variable after the fetch and hence I was seeing the above weirdness. Firebug helped me debug this.