David Arnado

Supercharge your WordPress site with Caledros Basic Blocks – a collection of 18 lightweight, performance-optimized Gutenberg blocks designed to extend the capabilities of the WordPress block editor without slowing down your site.
Unlike many block libraries that add unnecessary bloat, Caledros Basic Blocks focuses on efficiency and speed. Each block is crafted to deliver essential functionality while keeping your site lean.
The plugin includes a built-in CSS stylesheet preloader, ensuring faster page load times by optimizing the delivery of block styles. This feature can be easily disabled if preferred, giving you full control over performance tuning.
<h3>Features</h3>
<ul>
<li>Adds 18 new custom Gutenberg blocks, and 2 new variation blocks. 4 blocks and 1 variation block are only available for header template parts. 1 block (Content Renderer) is limited to templates. </li>
<li>Flex and grid containers blocks included</li>
<li>Dark/Light mode block included</li>
<li>Blocks built with performance and minimalism in mind</li>
<li>Includes a toggleable preloader for CSS stylesheets to improve loading speed</li>
<li>Includes toggleable controls for adding/removing pre-defined CSS styles to the “wp-site-blocks” container.</li>
<li>Enable featured images for post categories</li>
<li>Clean, modern design for seamless visual integration</li>
<li>Fully responsive and compatible with Full Site Editing Themes</li>
</ul>
Perfect for developers, designers, and content creators who want more control and better performance without the overhead of large block libraries.
<h3>More Projects & Information</h3>
For more information about my projects, you can visit my website: <a href="https://caledrosforge.com/" rel="nofollow ugc">caledrosforge.com</a>
<h3>Third Party Resources</h3>
Caledros Basic Blocks bundles the following third-party resources:
<h3>1. Icons</h3>
1.1. Bootstrap Icons, Copyright (c) 2019-2024 The Bootstrap Authors
The icons (SVG files) used in the Icon block, Social Icon block, and the Button Block were downloaded from Bootstrap Icons.
Additionally, the four icons used in the Posts Loop block (user, date, category, and tag) as well as the publications icon in the Category Loop block, were all sourced from Bootstrap Icons.
Bootstrap Icons are licensed under the MIT License.
Source: <a href="https://github.com/twbs/icons" rel="nofollow ugc">Bootstrap Icons Github repository</a> and <a href="https://icons.getbootstrap.com/" rel="nofollow ugc">Bootstrap Icons website</a>
License information last verified on: May 21st, 2025
<h3>2. Libraries</h3>
2.1. Swiper JS, Copyright (c) 2019 Vladimir Kharlampidi
Both the Slider block and the Image Gallery block use the Swiper JS library, which is licensed under the MIT License.
Source: <a href="https://github.com/nolimits4web/swiper" rel="nofollow ugc">Swiper JS Github repository</a> and <a href="https://swiperjs.com/" rel="nofollow ugc">Swiper JS website</a>
License information last verified on: May 14th, 2025
<h3>3. Images</h3>
3.1. Placeholder Mountains (placeholder-mountains.webp, placeholder-mountains.7da2eb2d.webp)
Used in the Category Loop and Posts Loop blocks.
<a href="https://creativecommons.org/publicdomain/zero/1.0/" rel="nofollow ugc">CC0</a> licensed <a href="https://wordpress.org/photos/photo/85161bd2cb/" rel="ugc">photo</a> by <a href="https://wordpress.org/photos/author/mkaz/" rel="ugc">Marcus Kazmierczak</a> from the <a href="https://wordpress.org/photos/" rel="ugc">WordPress Photo Directory</a>
Source: <a href="https://wordpress.org/photos/photo/85161bd2cb/" rel="ugc">WordPress Photo Directory</a>
License information last verified on: September 7th, 2025
3.2. Bird (bird.webp, bird.8dbbb5a8.webp)
Used in the Image Gallery block.
<a href="https://creativecommons.org/publicdomain/zero/1.0/" rel="nofollow ugc">CC0</a> licensed <a href="https://wordpress.org/photos/photo/715678e819/" rel="ugc">photo</a> by <a href="https://wordpress.org/photos/author/snilesh/" rel="ugc">Nilesh Shiragave</a> from the <a href="https://wordpress.org/photos/" rel="ugc">WordPress Photo Directory</a>
Source: <a href="https://wordpress.org/photos/photo/715678e819/" rel="ugc">WordPress Photo Directory</a>
License information last verified on: September 7th, 2025
3.3. Flower (flower.webp, flower.1092b3c8.webp)
Used in the Image Gallery block.
<a href="https://creativecommons.org/publicdomain/zero/1.0/" rel="nofollow ugc">CC0</a> licensed <a href="https://wordpress.org/photos/photo/763688069f/" rel="ugc">photo</a> by <a href="https://wordpress.org/photos/author/churaclicks/" rel="ugc">Chura Bhandari</a> from the <a href="https://wordpress.org/photos/" rel="ugc">WordPress Photo Directory</a>
Source: <a href="https://wordpress.org/photos/photo/763688069f/" rel="ugc">WordPress Photo Directory</a>
License information last verified on: September 7th, 2025
3.4. Mountains (mountains.webp, mountains.2b50cd4a.webp)
Used in the Image Gallery block.
<a href="https://creativecommons.org/publicdomain/zero/1.0/" rel="nofollow ugc">CC0</a> licensed <a href="https://wordpress.org/photos/photo/62068b050a/" rel="ugc">photo</a> by <a href="https://wordpress.org/photos/author/abishkaarchettri/" rel="ugc">ABISHKAAR CHETTRI</a> from the <a href="https://wordpress.org/photos/" rel="ugc">WordPress Photo Directory</a>
Source: <a href="https://wordpress.org/photos/photo/62068b050a/" rel="ugc">WordPress Photo Directory</a>
License information last verified on: September 7th, 2025

Caledros Basic Blocks

Introduces 18 lightweight blocks for the Gutenberg editor. Also includes an optional preloader for CSS stylesheets to enhance performance.

Virtual Window

Virtual Window Custom Block is a free, user-friendly plugin that enables you to easily create and manage Custom blocks in WordPress using Advanced Custom Fields. With a simple interface and solid customization options, it is an ideal tool for building unique and dynamic content on your website.
<h3>External Libraries</h3>
This plugin uses the following external libraries:
<ul>
<li>jQuery: Included by default in WordPress. Unminified version is available at <a href="https://code.jquery.com/jquery.js" rel="nofollow ugc">https://code.jquery.com/jquery.js</a>.</li>
<li>Bootstrap: Minified version included, source available at <a href="https://github.com/twbs/bootstrap" rel="nofollow ugc">https://github.com/twbs/bootstrap</a>. Unminified version available at <a href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap/5.1.0/js/bootstrap.js" rel="nofollow ugc">https://cdnjs.cloudflare.com/ajax/libs/bootstrap/5.1.0/js/bootstrap.js</a>.</li>
<li>Owl Carousel: Minified version included, source available at <a href="https://github.com/OwlCarousel2/OwlCarousel2" rel="nofollow ugc">https://github.com/OwlCarousel2/OwlCarousel2</a>. Unminified version available at <a href="https://cdnjs.cloudflare.com/ajax/libs/OwlCarousel2/2.3.4/owl.carousel.js" rel="nofollow ugc">https://cdnjs.cloudflare.com/ajax/libs/OwlCarousel2/2.3.4/owl.carousel.js</a>.</li>
</ul>

Virtual Window Custom Blocks

Boost Your WordPress Website with Virtual Window Custom Blocks

Caledros Basic Blocks vs Virtual Window Custom Blocks