matteotrap

WordPress Excerpts should be short, you know.
But when a user writes a lot, you might want to limit the number of characters for the excerpt panel: that’s where the Excerpt Character Limiter plugin comes handy!
It will basically add a character countdown to the panel titlebar, and it will truncate the text when available characters drop to zero. 
Simple but effective!

Excerpt character limiter

It will basically add a character countdown to the panel titlebar, and it will truncate the text when available characters drop to zero.

Vishit Shah

This is very simple plugin to remove extra p and br tags in post and page editer
This plugin remove extra p and br tags from the_content, the_excerpt and widget_text_content.

Remove Blank P Tag

This plugin remove extra p and br tags from the_content and the_excerpt.

Excerpt character limiter vs Remove Blank P Tag