Noted That:

• To install correctly this igsyntax-hiliter.zip .
• Fisrt Download the igsyntax-hiliter.zip to your computer
• Extract/Open igsyntax-hiliter.zip to Your Computer.
• Then, Find readme.txt file inside igsyntax-hiliter.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 Tips Below.

Start the Tips:

1. First Download " igsyntax-hiliter.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 " igsyntax-hiliter.zip "  Downloaded plugin from your computer, Where you downloaded igsyntax-hiliter.zip According to Step – 1 Above then, click on " Install Now"

6. Now, Click on " Active Plugin"

7. Then, See left sidemenu. " iG:Syntax Hiliter " folder is added on left sidemenu. Now, Click on " iG:Syntax Hiliter " folder.

   Noted that: If you do not see " iG:Syntax Hiliter " folder on left sidemenu then, see at left sidemenu " Settings " or " Tools ".

8. Now you configure yourself oR Watch video tutorial below about  iG:Syntax Hiliter Configurtions and Settings or How to work " iG:Syntax Hiliter " in your WordPress site.

After Activated Plugin According to Step-6 then,

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

UPGRADING from v4.0 or later

Just click update now link below the plugin listing on the plugins page in your wp-admin . That’s quite easy!!

UPGRADING from v3.x

Just deactivate plugin in WordPress admin, delete the syntax_hilite.php file & ig_syntax_hilite directory from plugins folder and follow the installation process below. That’s quite easy!!

UPGRADING from v2.1 or lower

Just deactivate plugin in WordPress admin, delete the syntax_hilite.php and geshi.php files & geshi directory from plugins folder and follow the installation process below. That’s quite easy!!

Installing The Plugin

1. Login to your WordPress wp-admin area.
2. Click Add New in the Plugins menu on left.
3. Enter iG:Syntax Hiliter in the search bar on the right on the page that opens and press Enter key.
4. WordPress would show the iG:Syntax Hiliter plugin with install button, click that to install the plugin.
5. Click on Activate Plugin link on the page that opens after the plugin has been installed successfully.

See Also: “Installing Plugins” article on the WP Codex