Caledros Basic Blocks
Introduces 18 lightweight blocks for the Gutenberg editor. Also includes an optional preloader for CSS stylesheets to enhance performance.
Use with caution
Caledros Basic Blocks works, but test it on a staging site before relying on it in 2026. Was last updated 3 months ago, and scores 49/100 on our health check.
- Small user base (<10 active installs)
- Very few reviews so far
- Needs PHP 8.3 or newer
How does it stack up?
Side-by-side on installs, updates, ratings & support
Daily downloads
Download spikes usually follow a new release — each site that auto-updates counts as a download.
Rankings
Where Caledros Basic Blocks stands todayWordPress.org search rankings
Live position in the plugin search, top 100| Keyword | Position |
|---|---|
| block-editor | >100 |
| custom blocks | >100 |
| gutenberg | >100 |
About Caledros Basic Blocks
From the official readme · v4.0.1Description
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.
Features
- 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.
- Flex and grid containers blocks included
- Dark/Light mode block included
- Blocks built with performance and minimalism in mind
- Includes a toggleable preloader for CSS stylesheets to improve loading speed
- Includes toggleable controls for adding/removing pre-defined CSS styles to the “wp-site-blocks” container.
- Enable featured images for post categories
- Clean, modern design for seamless visual integration
- Fully responsive and compatible with Full Site Editing Themes
Perfect for developers, designers, and content creators who want more control and better performance without the overhead of large block libraries.
More Projects & Information
For more information about my projects, you can visit my website: caledrosforge.com
Third Party Resources
Caledros Basic Blocks bundles the following third-party resources:
1. Icons
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: Bootstrap Icons Github repository and Bootstrap Icons website
License information last verified on: May 21st, 2025
2. Libraries
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: Swiper JS Github repository and Swiper JS website
License information last verified on: May 14th, 2025
3. Images
3.1. Placeholder Mountains (placeholder-mountains.webp, placeholder-mountains.7da2eb2d.webp)
Used in the Category Loop and Posts Loop blocks.
CC0 licensed photo by Marcus Kazmierczak from the WordPress Photo Directory
Source: WordPress Photo Directory
License information last verified on: September 7th, 2025
3.2. Bird (bird.webp, bird.8dbbb5a8.webp)
Used in the Image Gallery block.
CC0 licensed photo by Nilesh Shiragave from the WordPress Photo Directory
Source: WordPress Photo Directory
License information last verified on: September 7th, 2025
3.3. Flower (flower.webp, flower.1092b3c8.webp)
Used in the Image Gallery block.
CC0 licensed photo by Chura Bhandari from the WordPress Photo Directory
Source: WordPress Photo Directory
License information last verified on: September 7th, 2025
3.4. Mountains (mountains.webp, mountains.2b50cd4a.webp)
Used in the Image Gallery block.
CC0 licensed photo by ABISHKAAR CHETTRI from the WordPress Photo Directory
Source: WordPress Photo Directory
License information last verified on: September 7th, 2025
Installation
You have two easy ways to install the Caledros Basic Blocks plugin:
Option 1: From Your WordPress Dashboard
1. Go to your WordPress admin area.
2. Navigate to Plugins → Add Plugin.
3. In the Search Plugins box, type “Caledros Basic Blocks”.
4. Click Install Now, then Activate.
Option 2: Manual Installation
1. Download the plugin ZIP file from WordPress.org.
2. In your WordPress admin area, go to Plugins → Add Plugin → Upload Plugin.
3. Choose the ZIP file you downloaded and click Install Now.
4. Activate the plugin after installation.
Need help or want to see what each block can do?
Visit my YouTube channel for step-by-step tutorials and tips on using Caledros Basic Blocks.
Frequently asked questions
What is Caledros Basic Blocks
Caledros Basic Blocks is a lightweight WordPress plugin that adds 18 custom Gutenberg blocks to enhance your content creation experience while keeping your website fast and optimized.
What makes this plugin performance-friendly?
Caledros Basic Blocks is developed using the official @wordpress/scripts toolkit, which ensures clean, modern, and optimized code for Gutenberg blocks. Some blocks also leverage the WordPress Interactivity API to deliver smooth, responsive user interactions without adding unnecessary overhead. Additionally, the plugin features a built-in CSS preloader that efficiently loads stylesheets to reduce render-blocking and improve page load times. This careful focus on best practices and minimal dependencies helps keep your site lightweight and fast.
Can I disable the CSS preloader?
Yes, the CSS preloader feature is optional and can be easily deactivated in the plugin settings if you prefer to manage styles differently.
Are the blocks compatible with all themes?
The blocks are designed to work seamlessly with any modern, well-coded WordPress theme as long as the Gutenberg editor is enabled on your site. Since Caledros Basic Blocks extends the Gutenberg block editor, it requires the block editor to be active to function properly.
Do I need to know how to code to use these blocks?
Not at all! All blocks are fully integrated into the Gutenberg editor and can be used visually with no coding required.
Will this plugin slow down my site?
No. Caledros Basic Blocks is specifically built to enhance performance, not hinder it. The plugin is lightweight and optimized for speed. However, other third party plugins can slow down your website if they are used together with Caledros Basic Blocks.
Changelog
This update fixes the CSS breakpoints of several blocks.
This changelog format is based on Keep a Changelog. Also, this project adheres to Semantic Versioning.
4.0.1 – 2026-06-25
Fixed
- CSS breakpoints. Now several blocks use updated breakpoints fully compatible with the WordPress editor. These blocks are the following: category loop, desktop menu container, flex container, grid container, mobile menu container, posts loop, and sidebar menu.
4.0.0 – 2026-06-19
Added
- Style control to the Posts Loop block. This new control allows to select between 2 block styles. Each style displays the post title in a different position.
- Typography, font size, and letter spacing controls for the post titles in the Posts Loop Block. These new controls allow to change the appearance of the post titles text.
Changed
- Plugin admin menu’s position. Now such menu is located after “Settings” in the WordPress sidebar.
- Source code format. PHP files now comply with PHPCS+WPCS standards. JS files now comply with WordPress coding standards for Javascript, which are defined in @wordpress/eslint-plugin.
Fixed
- Automatic border that was being added to the desktop menu container in the editor. Now this border is no longer visible.
- Automatic border that was being added to the mobile menu container in the editor. Now this border is no longer visible.
- Variable name in the border light color control of the grid container block.
Removed
- Unique identifier control in the Slider block. Now, the identifier attribute’s value is generated automatically on block creation.
- Unique identifier control in the Image Gallery block. Now, the identifier attribute’s value is generated automatically on block creation.
3.1.2 – 2026-05-21
Changed
- “Tested up to” information. The plugin has been successfully tested with WordPress 7.0.
Fixed
- Default border in flex and grid blocks. This border was being added in WordPress 7.0. Now such blocks don’t have visible borders unless the user decides to.
3.1.1 – 2025-12-05
Changed
- “Tested up to” information. The plugin has been successfully tested with WordPress 6.9.
Fixed
- Several errors highlighted by the latest version of the Plugin Check testing tool.
- Browser console warnings about missing prop for a Select Control in the Button block.
- Image Gallery block’s loop setting. Loop functionality is now limited to coverflow image galleries with more than 2 images. This change complies with Swiper JS behavior.
3.1.0 – 2025-10-16
Added
- New “Filter by Author” control to the Posts Loop block.
- New option to the “Page Type” control in the Posts Loop block. This option is “Author template”, and it allows to use this block on the default WordPress Author Template. Thus, this option enables the Posts Loop block to automatically retrieve posts from an especific author using the WordPress Query class.
- New option to the “Author options” control in the Posts Loop block. This option is named “Enable author’s page link”. It allows to turn the author’s name into a link to the author’s page.
Changed
- @wordpress/scripts version. This package has been updated to version 30.25.0. The previous version was 30.14.0.
- Category filter behavior in the Posts Loop block. When the filter is disabled, the block displays all the categories of each post.
- Tag filter behavior in the Posts Loop block. When the filter is disabled, the block displays all the tags of each post.
Fixed
- Bug in the Posts Loop block. This block displayed content when the category, tag, or author filters were enabled, but no specific filter was selected.
- Bug when the WordPress debug mode was enabled. A notice was displayed in the pagination section of the Posts Loop block. This notice was visible when the number of items per page exceeded the number of items returned by the WordPress loop.
3.0.0 – 2025-09-07
Added
- New icon (Telephone) to the Icon block and the Button with Icon block variation. This icon, like the initial set, is sourced from Bootstrap Icons and is used under the MIT license.
- New control to the Button with Icon block variation. This new control (Content gap) allows changing the space between the button’s icon and text.
- New blur control to the Desktop Menu Container and Mobile Menu Container blocks. This new control is located under the “Style” tab.
- Previews for the following blocks: Button, Button with Icon (block variation), Category Loop, Dark/Light Mode Switcher, Desktop Menu Container, Flex Container, Grid Container, Icon, Image Gallery, Menu Link, Mobile Menu Container, Posts Loop, Search Form, Sidebar Menu, and Social Icons Group.
Changed
- Description for the Flex Container block.
- Changelog format. Now its format is based on Keep a Changelog.
- Demo images for the demo data of the following blocks: Posts Loop, Category Loop, and Image Gallery.
Removed
- The Mega Menu variation block has been removed from the block inserter in posts, pages, templates, and non-header template parts. It is now only available for header template parts.
- Four blocks have been removed from the block inserter in posts, pages, templates, and non-header template parts. They are now limited to header template parts. These blocks are the following: Dark/Light Mode Switcher, Desktop Menu Container, Mobile Menu Container, and Sidebar Menu.
Fixed
- Icons in the Icon block and Social Icon block not displaying correctly. New CSS rules have been applied.
- The Content Renderer block incorrectly appearing in the block inserter for posts, pages, and template parts in the Site Editor. It is now only available for templates.
Screenshots
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FAQ
Caledros Basic Blocks: quick answers
Straight answers, pulled from live WordPress.org data.
Live data from WordPress.org · checked Oct 5, 2026
Is Caledros Basic Blocks free?
Yes. Caledros Basic Blocks is free to download and use from the official WordPress.org plugin directory.
Is Caledros Basic Blocks safe to use in 2026?
Caledros Basic Blocks works, but test it on a staging site before relying on it in 2026. Was last updated 3 months ago, and scores 49/100 on our health check.
How many websites use Caledros Basic Blocks?
Caledros Basic Blocks is active on <10 WordPress websites and has been downloaded 1,375 times since it launched in June 2025. It was downloaded 54 times in the last 30 days.
Does Caledros Basic Blocks work with WordPress 7.1?
Caledros Basic Blocks is officially tested up to WordPress 7.0.6, while the latest release is 7.1.2. It may still work, but try it on a staging site first.
What PHP version does Caledros Basic Blocks need?
Caledros Basic Blocks requires PHP 8.3 or higher. Most hosts run PHP 8.x today, so it works on any modern WordPress hosting.
When was Caledros Basic Blocks last updated?
The latest version, 4.0.1, was released on June 25, 2026 (3 months ago).
Who makes Caledros Basic Blocks?
Caledros Basic Blocks is developed and maintained by David Arnado.
What are the best alternatives to Caledros Basic Blocks?
The most popular alternatives to Caledros Basic Blocks are Classic Editor (8M+ installs), Advanced Editor Tools (1M+ installs) and Disable Gutenberg (500K+ installs).
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