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To add a few lines of image caption to image, you may consider to use image annotation. Commonly, text and graphics annotation objects, like line annotation, can be drawn on image.

Related: line annotation; image annotation
It sounds like this image processing issue hasn't been solved? right? just wait for the new solution to control image hiding issue.
Tags: image; image control
The difference between image resize and image zoom is obvious. Zoom does not change the original image size, and it only affects how it is presented on screen. It's like magnification. Resize changes physical image size.

Related: web viewer, image viewing
"I wonder whether some imaging tools can help with that? I am testing with the related imaging SDK these days. You can also google it and select one whose way of processing is simple and fast to help you with the related work. It will be better if it is totally manual and can be customized by users according to our own favors. Remember to check its free trial package first if possible. I hope you success. Good luck."

Hi, Aaron. Your suggested image tools and SDK is not free. Just wonder whether you can suggest some free resources. That would be appreciate a lot.

I believe your image gets deleted from imgur as well. At least that's how it's supposed to work.
And no, there's no way to retrieve the image again, unless you remember where you posted it.Generally, there's no such an image solution for deleted image recovery.
instead of using the image zoom function as you mentioned, you could simply double the size of the image and render it at half the size. Not only will this solve your image showing problem in Chrome, but it will make the image look nice and crisp.

Best regards,

Related: process imageimage processing