Syntax-highlighting Code Block (with Server-side Rendering)

76 Quality Score

Active Installs

14/30

At roughly 1,000 active installs it is a niche plugin, but it scores above its weight because the rating-to-install ratio is unusually strong, suggesting it punches well above its user base.

Update Freshness

25/25

Updated within the past few days and tested against WordPress 7.0 with a PHP 7.4 floor, the maintenance signal is excellent and indicates an actively maintained codebase.

User Rating

15/15

A perfect 100 from 26 reviews is encouraging, though the small sample size means one or two future detractors could move the needle quickly.

Support Health

8/15

There are zero support threads in the public repository, which is a yellow flag: either the plugin is so stable that nobody needs help, or there is no active support channel beyond GitHub issues.

WP Compatibility

15/15

Tested with the latest WordPress major release and requiring only PHP 7.4, compatibility is strong and broad enough for nearly any modern host.

Scores higher than 46% of indexed plugins

About

Extending the Code block with syntax highlighting rendered on the server, thus being AMP-compatible and having faster frontend performance.

Active Installs 1k+

Rating ★★★★★ 5/5

Last Updated 2026-05-19 4:44am GMT

Requires WordPress 6.6+

Tested Up To 7.0.4

Requires PHP 7.4+

✓ No known vulnerabilities

What It Does

Syntax-highlighting Code Block extends the default WordPress Code block with server-side syntax highlighting, meaning the styled HTML is generated before the page reaches the browser rather than relying on client-side JavaScript libraries. The result is colour-coded code that renders correctly on AMP pages, loads faster, and avoids the layout-shift problems common with JS-based highlighters like Prism or highlight.js.

Who It's For

This plugin is a strong fit for technical bloggers, developer documentation sites, and tutorial publishers who need clean, fast-loading code samples and care about Core Web Vitals or AMP compatibility. It is also a sensible choice for teams that want a lightweight solution without bundling a large client-side syntax library on every page load.

Who Should Skip It

If your site rarely publishes code, you prefer a block editor with built-in highlighting already configured, or you need extensive language support, line-numbering controls, or a copy-to-clipboard button, this minimalist plugin will feel too limited.

The Bottom Line

With a 75.93 overall quality score, perfect recent ratings, and active maintenance, Syntax-highlighting Code Block is a credible pick for AMP-conscious technical publishers who want a fast, server-rendered code block. The 1,000-install footprint and zero public support threads mean it is best suited to developers comfortable troubleshooting via GitHub rather than expecting a bustling community forum.

Pick WPCode when you need a general-purpose snippet manager for injecting custom CSS, JavaScript, or PHP site-wide rather than a focused code display block.

Spectra Legacy – Gutenberg Blocks 95/100

Choose Spectra when you want a broad Gutenberg block library that includes code blocks alongside dozens of other design elements.

Code Snippets 88/100

Choose Code Snippets when you need to run custom PHP, HTML, or CSS snippets as functional site code rather than just display them read-only.

Breadcrumb NavXT 88/100

Breadcrumb NavXT is a different category entirely, useful for adding navigation breadcrumbs rather than displaying code.

PDF Embedder 86/100

PDF Embedder is for embedding PDF documents in pages, not a relevant alternative for syntax highlighting workflows.