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WordPress plugin
rtSyntax
Uses highlight.js . 26 themes included. 55 languages supported (54 from highlight.js + 1 for nginx commands). Auto-detects language. Super-optimised, only loads js for the language. Adds buttons to tinyMCE for ease of adding code blocks. Optimised code with minimal overheads. All code on Github .
PricingFree downloadThe WordPress.org download is free. Pro versions, add-ons or external services may cost extra.
CompatibilityRequires WordPress 3.0.
SourceWordPress plugins · Oct 28, 2026
01 / Source details
- 01Uses highlight.js .
- 0226 themes included.
- 0355 languages supported (54 from highlight.js + 1 for nginx commands).
- 04Auto-detects language.
- 05Super-optimised, only loads js for the language.
- 06Adds buttons to tinyMCE for ease of adding code blocks.
- 07Optimised code with minimal overheads.
- 08All code on Github .
See it in action
Screenshots & previews.
02 / Source details
Automatic Installation
- 01Log in to your WordPress admin panel, navigate to the Plugins menu and click Add New.
- 02In the search field type “rtSyntax” and click Search Plugins. From the search results, pick rtSyntax and click Install Now. WordPress will ask you to confirm to complete the installation.
Manual Installation
- 03Extract the zip file.
- 04Upload them to /wp-content/plugins/ directory on your WordPress installation.
- 05Then activate the Plugin from Plugins page.
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