there is a web site that converts all inside emails to images like below :

is there a way to get these email addresses?
mean is there a software can do this job or can i write a code for doing that?
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Did you ever think they are showing those email addresses as images for a reason? And perhaps that reason was so a program couldn’t scrape the addresses, and proceed to spam them?
Anyway, what you are looking for is called Optical Character Recognition (OCR).
Here are several Stack Overflow questions that ask about OCR:
The general consensous is that Tesseract for .NET is the way to go here, as it is open source.
But please, don’t spam, or we will all have to hate you.