Adds Excerpt Length option on Reading page, which can be used to set the number of words in post excerpt.

Noted That:

To install correctly this custom-excerpt-length.zip.
Fisrt Download the custom-excerpt-length.zip to your computer
Extract/Open custom-excerpt-length.zip to Your Computer.
Then, Find readme.txt file inside custom-excerpt-length.zip and Open readme.txt.
Now, Read the Requirements of this plugin. Which Wordpress Version and PHP Version are required to run this Plugin in Your Wordpress Site.
Then, Follow the the Tips Below.

Start the Tips:

1. First Download "custom-excerpt-length.zip" Plugin to your Local Computer. (Click Download)

2. Then, Login to your "yourdomain.com/wp-admin" Dashboard.

3. Then, Click on "Plugins" + "Add New" from left sidemenu of Dashboard.

4. Now, Click on "Upload Plugin" button.

5. Now, Browse "custom-excerpt-length.zip" Downloaded plugin from your computer, Where you downloaded custom-excerpt-length.zip According to Step – 1 Above then, click on "Install Now"

6. Now, Click on "Active Plugin"

7. Then, See left sidemenu. "Custom Excerpt Length" folder is added on left sidemenu. Now, Click on "Custom Excerpt Length" folder.

Noted that: If you do not see "Custom Excerpt Length" folder on left sidemenu then, see at left sidemenu "Settings" or "Tools".

8. Now you configure yourself oR Watch video tutorial below about Custom Excerpt Length Configurtions and Settings or How to work "Custom Excerpt Length" in your WordPress site.

After Activated Plugin According to Step-6 then,

Go to "Plugins" + "Installed Plugin" from Wordpress Admin Panel Leftside Menu.
or Direct go to: https://yourdomain/wp-admin/plugins.php
Then, Find "Custom Excerpt Length" Activated Plugin from Plugin List.
Then, Click on "Settings" from Plugin that is Custom Excerpt Length
Now, Edit/Add/Config the setting and Click on "Save Changes" button,

Guide
Unpack and upload all files to “/wp-content/plugins/plugin-name” directory. Or simply install plugin through Plugins page. Activate extension on “Plugins” page. Setup plugin according to your liking. On Settings -> Reading page find Excerpt Length option. Enter desired number of words in post excerpt.

Guide

Unpack and upload all files to “/wp-content/plugins/plugin-name” directory. Or simply install plugin through Plugins page.
Activate extension on “Plugins” page.
Setup plugin according to your liking.

On Settings -> Reading page find Excerpt Length option. Enter desired number of words in post excerpt.

excerpt, used, number, post, which, words, page, length, option, reading,

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Reffered: https://wordpress.org/