You are only doomed if you believe that you are doomed. Go out there and grind! Given that grinding is not your cup of tea, your only option is to pay someone to grind for you.
Good luck with your product.
You should also check out http://www.htmltoimage.io
it does the same thing and more. BTW: your app looks great. Just let allow me to enter something like CNN.com without http
Given that it happens at exactly 12am, it is safe to assume that the machine itself is infected with some kind or rogue software. Kill all unknown processes in the machine. Get an updated virus/malware cleaner. Look at scheduled tasks on the machine. Did you check registry entries? Good luck
Thank you for the feedback. We might have to start generating .png outputs - that will definitely solve the quality problem. Do you mind sharing the site/input you used?