Open your page with Chrome browser, press the Ctrl-Shift-I keys (if Mac, press the Option-Command-I) -> open the Resources panel -> drill down into the files folders (Images, Scripts or Stylesheets folder), then you will easily find if your page contains bugs. The Chrome browser will mark a red symbol besides a file name if the file contains bugs:

For example, if an image location you uploaded does not match the image path you specified in your markup, the Chrome console tool will mark a red icon besides the image file name under the Images folder.

Debugger panels under the Console and the Elements tags also contain information that is very helpful for debugging.