Google Docs link preview functionality displays incorrect thumbnail Image - google-docs

The link details that popups by mousing over a hyperlink in Google docs shows a preview of the link with a thumbnail image and short description.
Recently, found a webpage from our website in Google docs displays irrelevant thumbnail image in the link preview instead of the website logo.
Is there any information on how a website can ensure the image in the link preview that Google docs pulls deliver the correct preview image?

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security registration code on the website does not appear when I register

I've tried it with chrome browser and also microsoft edge still doesn't show up. Is there another solution so that an image or art clip appears on the website
Thanks
http://delphi-z.ru/index.php?do=register

Chrome extension doesn't display published program

enter image description here
I'm Chrome extension programmer and published first program at last year. Recently, in chrome web store does not display my program called airdesk. It's really weird because this is searched on google. But in chrome webstore, this can't be searched.(link)
enter image description here
As you can see, this is published state and searched on Google.
To solve this, I've send email to Google but they didn't anwser. In fact, Google hasn't email contact service for Chrome web store. I don't know how to contact to Google or their Help center.

How to grab URL of a video hidden in code with python

I have a website that is playing videos.
But the videos are not visible from the web, but I can see them using Firefox develop tool, at the network tab.
Is there a way to grab the videos or the URL in order to download them??
The web is: https://acloud.guru/
We don't need an account to watch the promo video,
https://acloud.guru/learn/lpic-1
And how to scrap the video with python.
I can only see it with the developer tools, network tab in Firefox
Looked through the network tab on their website. I found that it loads a JSON list of videos at query?x.... I'd start there. Simply open up network tab, refresh the page, then click on the 'response tab.' From there CTRL+A, CTRL+C. And now you've scraped all the video urls. It should start with {"hits":[{"allowDownload":true....

how to search google images programatically

I would like to show google image search results on a web page. A broad web search, not a search of a specific site.
I see that image search api is depreciated.
I see nothing in the custom search api developer's console that allows me to search for images on the web.
I figured it out using this guide
below is a screenshot of the relevant sections in the control panel

Download images for google chrome extension

i'm trying to build a batch image downloader in chrome. Basically, i will overlay a small download square to each image on the page and user clicks on it to download. Or the user can click to download all images on a page. I'm currently stuck on figuring out how to download the images. The best i can come up with is to use XHR to send the image to another server, the user can then retrieve it there.
If anyone have a solution for me. It would be much appreciated!
Jason
I believe you can XHR the images and using the File API you can store them locally.
Take a look at the following site http://www.html5rocks.com/features/file there are additional resources on the right column that has detailed examples and tutorials. Such as http://www.html5rocks.com/tutorials/file/filesystem/
Mohamed Mansour
This code will do the trick for you: https://gist.github.com/1049553
It's very simple usage of a 'feature' in chrome when you open an image in a new tab.

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