I have created an API for steem developers. It gives the result of total words & characters used in a steemit blog.
I think it will help the writing contest creators and also for developers.

The API needs only the blog url and it will give the result in JSON. To know more see my project,
https://steemit.com/utopian-io/@nawab69/introducing-get-blog-count-api-blog-words-and-characters-counter-to-steemit-developers-1548917383041