Simon Mista

Compile SCSS (Sass) to CSS straight from the WordPress admin. Theme SCSS Compiler manages as many SCSS → CSS file pairs as your theme needs, under Tools → Theme SCSS Compiler. It uses the bundled scssphp library, so there is no Node.js, no build step and no command line. SCSS is the modern Sass syntax: plain CSS plus nesting, variables and <code>@import</code>.
<h4>Features</h4>
<ul>
<li>Multiple file pairs – as many SCSS → CSS pairs as your theme needs, paths relative to the active theme.</li>
<li>Frontend or Admin per pair – each pair enqueues on <code>wp_enqueue_scripts</code> or <code>admin_enqueue_scripts</code>.</li>
<li>Per-file versioning – every pair has its own version, applied through the <code>style_loader_src</code> filter. Your theme files stay untouched.</li>
<li>Smart change detection – a version only bumps when that pair’s compiled CSS really changed.</li>
<li><code>@import</code>-aware recompile – every partial (<code>@import</code>, <code>@use</code>, <code>@forward</code>) is tracked. Edit a partial and the next admin page load recompiles.</li>
<li>Compressed or expanded output – minified for production, readable for development.</li>
<li>Auto-compile – missing or stale CSS is rebuilt on the next admin page load, so a deploy never leaves you with unstyled pages.</li>
<li>Auto-enqueue – the plugin calls <code>wp_enqueue_style()</code> for each pair and skips files already registered, so output is never duplicated.</li>
<li>Manual compile button – one click, live feedback, persistent error display.</li>
<li>Concurrent-compile lock – two admins compiling at once can’t corrupt the CSS.</li>
<li>Code-first config – set every option as a PHP constant in <code>wp-config.php</code>, your theme, or <code>.env</code> / Bedrock.</li>
<li>Admin-only – every endpoint needs <code>manage_options</code>. Change that with the <code>tscsscompiler_capability</code> filter.</li>
<li>Modern and accessible – PHP 8.1+, WCAG 2.1 AA admin UI, German translation included.</li>
</ul>
<h4>Privacy / GDPR</h4>
This plugin makes no external HTTP requests, sets no cookies, runs no telemetry and does not track users. All processing happens locally on your server. The bundled libraries (scssphp, league/uri, symfony/filesystem, PSR HTTP interfaces) are MIT licensed and GPL-compatible; their source is included in the plugin’s <code>vendor/</code> directory.

Theme SCSS Compiler

Compile SCSS / Sass to CSS in the WP admin. Multiple file pairs, per-file versioning, @import-aware change detection, optional auto-compile.

rahburma

This is a syntax highlighter plugin which also acts as an interface to the online compiler api service on cloud provided by https://www.compilebin.com. It interacts with cloud service via rest APIs i.e, submit the code and get the output. Users need to signup and get an api key which is to be updated in the plugin to use the service. Plugin contains a link for signing up for the service. There is no security concern on the web server as the task of code execution is offloaded to the cloud service. The plugin uses the following open source libraries : 
1) Code prettify for syntax highlighting 
2) Ace code editor 
Please visit https://www.compilebin.com for more information about the service. 
Note that this plugin can also be used purely as a syntax highlighter only by hiding the run button on your code snippets. This mode of usage is free of any charges. Run button will not be visible on public view. 
Please report issues to support@compilebin.com 
This plugin is actively maintained and we will fix the reported issues as soon as possible.

Compilebin

An online compiler plugin which comprises of code editor and live compiler along with syntax highlighter.

Theme SCSS Compiler vs Compilebin