Advance Custom HTML – Show Off Code Snippets with Live Preview vs Spectra Legacy – Gutenberg Blocks

Share HTML, CSS, JavaScript, PHP, and Python snippets that readers can see, copy, and watch run live – right inside your posts and pages. Advance Custom HTML | Pricing | Support | Live Demo Why Advance Custom HTML? Plain code dumps are hard to read and impossible to interact with. Advance Custom HTML lets you display HTML, CSS, JavaScript, PHP, Python, and other code snippets in WordPress posts, pages, or widgets with built-in syntax highlighting, a clean code editor, and live preview support – so your readers see the code and the result side by side. The plugin includes a front-end code editor with a draggable preview panel, multiple syntax themes, and customizable settings for formatting and appearance. It is ideal for tutorials, technical articles, and documentation – a flexible, responsive way to embed and present code with real-time results. Free Features Edit Code with Live Preview: Write code and see the rendered output together in the editor. Live Output Preview: See the results of your code instantly. Autocomplete Suggestions: Get smart suggestions while writing code. Draggable Preview Panel: Move the output panel anywhere on screen. Editor Font Size: Set the font size that suits your content. Fully Responsive: Mobile-friendly code blocks and preview panels on every device. Lightweight and Fast: Built for performance so your pages stay quick. Pro Version – Unlock Advanced Controls The Pro version offers extended customization and control over code presentation and layout. Pro features include: Choose from 40+ editor themes (dark, light, minimal, and more). Adjust tab size, line wrapping, and editor height/width. Change syntax mode per snippet: HTML, CSS, JS, PHP, Python, and more. Toggle features: copy button, fold gutter, highlight active line, and more. Customize the Copy to Clipboard button text, icon, style, and position. Hide headings or labels for a clean, minimalist look. Show or hide line numbers to simplify code presentation. Enable or disable wrap to control line flow in your editor. Set the code editor/snippet height and width, and align left, center, or right. Fold gutter support for collapsing code blocks. Highlight active line toggle for easier focus during tutorials. How to Use – Quick Start Install and activate Advance Custom HTML. Open the editor for any post or page. Click Add Block and select Advance Custom HTML under Widgets. Write or paste your code. Customize the settings (theme, preview, copy button). Publish or update the content. Live Demo | Buy The Pro Use Cases HTML/CSS Tutorials: Write and preview front-end lessons with live results. JavaScript Demos: Embed snippets with instant, interactive output. PHP Education: Display PHP code cleanly in courses and articles. Data Science Blogs: Show Python syntax with proper highlighting. Developer Documentation: Publish API guides and reference docs. Interactive Articles: Create code content readers can explore with live editing. Perfect for bloggers, tech writers, instructors and course creators, web developers, software product sites, and anyone publishing HTML, JS, CSS, PHP, or Python code. Check out our other WordPress Plugins- Html5 Video Player – Display videos as single and playlist in multiple skins. PDF Poster – Display/Embed PDF files with different styles. Html5 Audio Player – Listen audios with awesome visuals. StreamCast – Customizable radio player with different skins. 3D Viewer – Embed 3D models and 3D products with interaction. Advanced Post Block – Show posts and custom posts in different layouts.

This plugin was previously called Spectra. It’s now Spectra Legacy. Nothing on your website has changed. Your blocks, pages, settings, and content all continue to work exactly as they did before. There’s nothing to migrate and nothing to configure. Spectra Legacy vs. Spectra Blocks We’ve split Spectra into two products. Spectra Legacy is this plugin — built for existing Spectra users. It receives security and compatibility updates and full support, but no new features. Spectra Blocks is a new, separate plugin where all new feature development happens, aimed at new installs and anyone who wants ongoing additions. If you’re already using this plugin, no action is needed; installing Spectra Blocks is entirely optional whenever you’re ready. If you’re already using this plugin, you don’t need to do anything. If you want new features as they’re released, you can install Spectra Blocks separately, whenever you’re ready. There’s no deadline and no required migration. What’s included Spectra Legacy includes the full block library your site is already built on: layout tools, content and post blocks, form and SEO blocks, social blocks, and site tools like Popup Builder and Coming Soon mode. Blocks included Core — Container, Heading, Image, Icon, Buttons, Info Box, Call To Action, Countdown Content — Sliders, Content Timeline, Google Maps, Inline Notices, Tabs, Taxonomy List, Price List (Loop Builder in Spectra Pro Legacy) Post — Counter, Modal Popup, Post Carousel, Post Grid, Post Timeline Social — Instagram Feed, Blockquote, Social Share, Team, Testimonials Forms — Contact form, newsletter signup, suggestion form, reCAPTCHA (registration/login forms in Spectra Pro Legacy) SEO — FAQ, How-To, Review, Table of Contents Dynamic content — Archive feed filtering by date, author, category, and post type Site tools — Popup Builder, Coming Soon mode, block animations, local Google Fonts, global styling defaults About the AI block The AI block previously included in this plugin is now called ZipAI. It still works in Spectra Legacy for compatibility. New AI features are being built in Spectra Blocks going forward. Compatibility Works with most standard WordPress themes, including Spectra One, Astra, Blocksy, and GeneratePress. Compatible with common plugins including WooCommerce, SureCart, Gravity Forms, LearnDash, MemberPress, and Yoast SEO. See our documentation for the full compatibility list. Support & community Spectra Legacy is actively maintained — security patches, compatibility updates, and support all continue. This plugin is not deprecated. Support forum: use the Support tab on this page Documentation: wpspectra.com/docs Facebook Group: Web Creators by Astra Facebook: Spectra X (Twitter): @wpspectra Contribute Spectra is open source. Browse the code or contribute on GitHub: brainstormforce/wp-spectra Credits Our external packages use Rating Star Component that are distributed under the terms of the ISC. While Slick, Lottie and Striptags is distributed under the terms of the MIT. Additionally, we incorporate FontAwesome v6 under the CC BY 4.0 License, and dnd kit licensed under the MIT License.