Webtool to get all the clickable elements based on id,tag or class

I am trying to make a web automation script in python, which will launch a browser login into the portal and click on few elements (buttons, pages..) based on the configuration supplied to the project.

I am using selenium and it has been working very good. But I am having few issues understanding the html of a page. I need to click on few buttons and pages but I am unable to find proper id, tag or a class of that particular elements as I am bit new to html.

Is there any tool available which I can download and it can list all the elements of a webpage based on id, tag class it is using. Thanks