@JKSH That's it

Thank you guys.

Thanks @tekojo and of course Qt.
Image Transformer is now being displayed in Qt Showroom:
https://showroom.qt.io/image-transformer/

@Jeff-Andle
A list of vulnerabilities can be found here . From the list i can take that it's one MITM exploit and everything else just DOS. Also google just warns us about a possible problem, it doesn't remove nor unpublish the app. Afaik heartbleed occurs from OpenSSL version 1.0.1 to 1.0.1f until it's fix in version 1.0.1g. So version 1.0.0e shouldn't have a problem with heartbleed. Although i would like to update somehow anyway...

@mbnoimi Ok. Regarding the searching, if you want to find open source projects better to check it on source code collaboration sites like Github, SourceForge or BitBucket etc.. directly.