Agus Prawoto Hadi

Syntax Highlighter developed by Alex Gorbatchev that has been developed 10+ years is a popular syntax highlighter. It is also widely used by a lot of blog and website.
Currently, it achieves version of 4, this version has significant change in the built method compared to the previous, this is, for some people, somewhat confused and hard to do.
This plugin helps you to bring this code highlighter to your WordPress easily, forget a headache builds. Provided with many features and user-friendly GUI, make it handy and easy to use
** Features. **
<ul>
<li>Simple and easy to use</li>
<li>Full GUI, don’t need to hardcode the parameters</li>
<li>Custom container max-height. Useful when displaying long code.</li>
<li>Easy to add custom CSS. Useful for responsive design.</li>
<li>Easy to edit code that has been written in tinyMCE text editor (Screenshot 3)</li>
<li>Write and edit code in place. The textarea code editor supports the tab and back tab, so you can directly edit or write your code, rather than switch back to your code editor.</li>
<li>Load script on demand, load javascript and CSS files of syntax highlighter only when needed.</li>
<li>Use <a href="https://github.com/syntaxhighlighter/syntaxhighlighter" rel="nofollow ugc">Syntax Highlighter 4</a> by Alex Gorbatchev</li>
<li>Ability to override global options and use individual options for each code block</li>
<li>Custom Font Size</li>
<li>Support TinyMCE Visual mode and Text Mode (Quick Tags), it also supports the Quick tags used in the admin comment page (screenshot 5)</li>
<li>Use similar pattern with <a href="https://wordpress.org/plugins/aph-prism-highlighter/" title="APH Prism Highlighter" rel="ugc">APH Prism Highlighter</a> and <a href="https://wordpress.org/plugins/crayon-syntax-highlighter/" title="Crayon Syntax Highlighter" rel="ugc">Crayon Syntax Highlighter</a> plugins, so your code will still work using those plugins</li>
<li>Language added: dark plain (console style) and light plain</li>
</ul>
<h3>How To Use</h3>
After installing the plugin, go to the admin setting Settings > Syntax Highlighter to configure the global setting including the highlighter languages you want to load, theme, etc…
In the TinyMCE menu (add or edit post or page), there is a new button that can be used to pop up the code editor, simply copy-paste your code and fill in some options
This new button also can be found at the quick tags of comment editor in the Admin Edit Comments page. This quick tag appears when you edit or reply a comment.

APH Syntax Highlighter

Bringing SyntaxHighlighter 4 by Alex Gorbatchev into Wordpress easily. Easy to use with user-friendly GUI. Write-edit code in place

rraub

Peter Mukhortov

collinprice

James Bradford

Add syntax highlighting in the Classic Post & Page HTML text editor, Gutenberg Code Editor, and Theme & Plugin editors using CodeMirror.js
<h4>Features</h4>
<ul>
<li>Syntax highlighting in the Post/Page HTML editor</li>
<li>NEW: Syntax highlighting in the Gutenberg Code Editor (not Visual Editor)</li>
<li>Syntax highlighting in the Theme & Plugin editors</li>
<li>Syntax highlighting for WordPress <code>[shortcodes/]</code></li>
<li>Save your posts and pages pressing <code>Ctrl+S</code> (<code>Cmd+S</code> on Mac)</li>
<li>Restore cursor position after page is reloaded</li>
<li>Huge selection of themes and other customization options</li>
<li>Fullscreen mode: toggle with <code>F11</code>/<code>Esc</code> hotkeys</li>
</ul>
If you would like to contribute to this plugin, view the <a href="https://github.com/mukhortov/HESH-WordPress-Plugin" rel="nofollow ugc">github repo</a>.
If you’re a regular user of this plugin, please consider taking a short <a href="https://goo.gl/forms/xvaHgd7sZEbBbFAL2" rel="nofollow ugc">User Experience Survey</a> to provide feedback that will help shape the new version 3.0.

HTML Editor Syntax Highlighter

And what's really neat, is that there is no WP Admin page, all settings are performed while editing. This is a perfect job. I have only used the classic editor (still waiting until Gutenberg is more mature). A previous reviewer wrote that text added in the Text tab is lost when switching to Visual - I have not seen this happen. I'm very happy :)

Superb, more options than I imagined

HESH is built on top of Code Mirror which is first class code. The implementation is somewhat eclectic including a settings button in the front end which allows the user to really play with editor settings. Easy access to the settings is convenient at first and then a bit of a distraction.

HESH even highlights WordPress shortcodes [shortcode] syntax.

What HESH doesn't have is Markdown syntax highlighting in the posts/pages plain text editor but the WordPress shortcodes and HTML highlighting helps make up for it.

What is buggy are the settings on iPhone (iOS 13.5) where the settings buttons more or less don't work and the settings can't be closed. If you don't touch the settings though, HESH provides a better plain text editor than WordPress default (which can be very finicky to accept text entry). It remains easier to edit on iOS with HESH installed than without so no downnmarks here.

All in all a great plugin, a bit overwhelmed right now with legacy support for WordPress 4.9 editor, Classic Editor, Code view, plain text editor, Gutenberg and the sixteen different kinds of blocks which might need syntax highlighting. I can't blame the plugin authors for not being on top of all editors all the time now in the current Gutenberg-induced editor hell.

Very, very grateful for their hard work and looking forward to HESH v3.

Works, even on iOS/mobile

Add syntax highlighting to WordPress code editors using CodeMirror.js

APH Syntax Highlighter vs HTML Editor Syntax Highlighter