Preview your GDN ad on other websites by
GDN Preview Generator Chrome Extension
A complementary chrome extension to GDN Preview Generator
1 Install "GDN Preview Generator Chrome Extension" on your chrome browser.
2 Upload your ad on gdnpreviewgenerator.com.
3 Click "Take this Ad" button on the extension or on the page right click.
4 Visit any website which has Google ads on it, or check one of these websites.
5 Click on "Apply" button on the extension, then hover on the current ads on the target website. Click on the ad once it is highlighted.
Here is a video showing how to use the chrome extension