Free Syntax Highlighter WordPress Plugins in 2026

While blocks may be the kingpins of the new WordPress administration system, there’s still plenty of room for custom code.

With built-in options such as the Custom HTML Block and the Code Block within WordPress, there is no syntax highlighting, thus making them extremely hard to read.

Luckily, syntax highlighting plugins are the answer to this problem, color coding all your code snippets to differentiate PHP from HTML or JavaScript. Want your code to be properly highlighted both frontend and backend? Here’s our pick for the best syntax highlighters.

Code Block Pro for WordPress

Enlighter Syntax Highlighter Plugin

Highlighting Code Block Plugin

PrettyCode CodeMirror Syntax Highlighting Plugin

Prismatic Beautiful WordPress Code

Syntax-highlighting Code Block Plugin