Rashid Sharafat

Oriole One Instant Copy enhances the standard WordPress Gutenberg Code block (<code>core/code</code>) by injecting a small, accessible “Copy” button into the top-right corner of every code block on your site — automatically, on every existing and future post.
No shortcodes. No block-editor changes. No database modifications. Pure progressive enhancement.
<h4>How it works</h4>
The plugin uses vanilla JavaScript to detect every <code>pre.wp-block-code</code> element after the page loads and appends a lightweight Copy button. When clicked, the button copies the code text to the system clipboard using the modern <code>navigator.clipboard</code> API, with a <code>document.execCommand</code> fallback for older browsers.
The stored post content is never touched. If you deactivate or uninstall the plugin, your posts are exactly as they were before.
<h4>Key Features</h4>
<ul>
<li>Automatic — works on all existing and future posts without any editor involvement.</li>
<li>Lightweight — total asset footprint under 5 KB combined (CSS + JS). Zero dependencies.</li>
<li>Accessible — keyboard navigable, <code>aria-label</code> support, <code>focus-visible</code> outlines, screen-reader text, reduced-motion aware, high-contrast mode support.</li>
<li>Smart enqueueing — assets are loaded only on pages that actually contain a Gutenberg code block, not on every page of your site.</li>
<li>Clipboard API with fallback — uses <code>navigator.clipboard.writeText()</code> on secure contexts and falls back to <code>execCommand('copy')</code> for legacy environments.</li>
<li>Duplicate-proof — skips any code block that already has a copy button to avoid conflicts with other plugins.</li>
<li>Theme-safe — uses <code>currentColor</code> and semi-transparent backgrounds; works with light and dark themes without hardcoding colours.</li>
<li>No jQuery — vanilla JavaScript only.</li>
<li>No tracking, no telemetry, no external requests — 100% self-hosted.</li>
<li>Multisite compatible.</li>
</ul>
<h4>Settings</h4>
Find the settings under Settings → Oriole One Instant Copy:
<ul>
<li>Enable / Disable the button globally.</li>
<li>Button text — customise the label shown on the button (default: “Copy”).</li>
<li>Success text — customise the label shown after copying (default: “Copied!”).</li>
<li>Position — Top Right (additional positions planned for v2).</li>
</ul>
<h4>Developer Notes</h4>
All settings use the WordPress Settings API with <code>sanitize_callback</code> and proper nonce handling via <code>settings_fields()</code>. No custom REST endpoints, no Gutenberg/React dependencies, no build tools required.
The plugin defines the following PHP constant and classes:
<ul>
<li><code>ORIOLE_OIC_VERSION</code> — current plugin version string.</li>
<li><code>Oriole_OIC_Plugin</code> — main bootstrap class (singleton).</li>
<li><code>Oriole_OIC_Settings</code> — settings page and storage class.</li>
</ul>
Option stored in <code>wp_options</code>: <code>oriole_oic_settings</code> (autoloaded, single serialised array).

Oriole One Instant Copy

Automatically adds a lightweight, accessible Copy button to every Gutenberg code block. No shortcodes, no database changes.

Vicky Agravat

CodeMirror Blocks is useful for developers blog, tutorial site where to display formatted (highlighted) code of any program. 
It supports 100+ Programming, Scripting and MarkUp Language, with 56 Different Themes.
The Code Block is dependent on a <a href="https://codemirror.net/" rel="nofollow ugc">CodeMirror</a> library.
Formatted Code Block is like (syntax highlighting feature) that displays source code, in different colors and fonts according to the category of terms. It is one strategy to improve the readability and context of the text; especially for code that spans several pages. The reader can easily ignore large sections of comments or code, depending on what they are looking for.
This plugin is just plug and play, no tedious configurations or hacks, just install, activate and start using block inserter.
Features
<ul>
<li>Control Panel Added on top of the Code Block. 
** It displays language/filename. 
** It also display three buttons, includes Run/Execute, FullScreen, Copy Code.</li>
<li>Web editor (Execution of HTML, CSS JavaScript block) With CodeMirror Block 1.1</li>
<li>Option Page for set default options</li>
<li>Highlight Active Line (now available on CodeMirror Block 1.1)</li>
<li>CodeMirror Block 1.1 now support Block align (Wide Width, Full Width) if your theme Supports.</li>
<li>
Classic Editor Support (Partial)
</li>
<li>
Lightweight and fast
</li>
<li>Secure code with using clear coding standards</li>
<li>Intuitive interface with many settings</li>
<li>Cross browser compatible (work smooth in any modern browser)</li>
<li>Works also on android mobile browser</li>
<li>Compatible with all Default WordPress themes (tested with Latest Twenty Twenty-Four)
<ul>
<li>Twenty Twenty-Four</li>
<li>Twenty Twenty-Three</li>
<li>Twenty Twenty-Two</li>
<li>Twenty Twenty-One</li>
<li>Twenty Twenty</li>
</ul>
</li>
<li>Also Compatible with other third-party themes.</li>
</ul>
Key features include
<ul>
<li>Code syntax highlighting</li>
<li>Line number (On/Off) option</li>
<li>56 Themes (all provided themes from CodeMirror)</li>
<li>100+ Programming languages (all most provided languages from CodeMirror)</li>
<li>Programming language selection option</li>
<li>Loading CodeMirror files on pages only when needed</li>
</ul>
A list of supported themes:
<ul>
<li>3024 day</li>
<li>3024 night</li>
<li>Ambiance mobile</li>
<li>Ambiance</li>
<li>Base16 dark</li>
<li>Base16 light</li>
<li>Blackboard</li>
<li>Cobalt</li>
<li>Colorforth</li>
<li>Eclipse</li>
<li>Elegant</li>
<li>Erlang dark</li>
<li>Lesser dark</li>
<li>Liquibyte</li>
<li>MBO</li>
<li>MDN-like</li>
<li>Midnight</li>
<li>Monokai</li>
<li>Neat</li>
<li>Neo</li>
<li>Night</li>
<li>Paraiso dark</li>
<li>Paraiso light</li>
<li>Pastel on dark</li>
<li>Rubyblue</li>
<li>Reactjs.org Theme</li>
<li>Solarized</li>
<li>The matrix</li>
<li>Tomorrow night bright</li>
<li>Tomorrow night eighties</li>
<li>TTCN</li>
<li>Twilight</li>
<li>Vibrant ink</li>
<li>XQ dark</li>
<li>XQ light</li>
<li>Zenburn</li>
</ul>
<h3>Credits</h3>
<ul>
<li>This Plugin use CodeMirror library to highlight <code>Code Blocks</code>. <a href="https://codemirror.net/" rel="nofollow ugc">CodeMirror</a> is an open-source project shared under the <a href="https://codemirror.net/LICENSE" rel="nofollow ugc">MIT license</a>.</li>
</ul>

CodeMirror Blocks

Thanks for creating this great tool. It solves my problem. It works as you have described. I love the preview running option. Great work. Keep rocking, brother. 

Perfect Syntax Highliter with Preview Mode

Top great work!


Good plugin, thanks for sharing. I have question I know you removed the run/execute button for HTML, CSS and JavaScript due to security issue XSS. but are you willing to add again after fixing it maybe?


Good plugin

CodeMirror Blocks is useful for tutorial site where display formatted (highlighted) code block. With support of 100+ Language/Mode and 56 Themes.

Oriole One Instant Copy vs CodeMirror Blocks