Spectra – WordPress Gutenberg Blocks (GPL Version)
Why It’s So Popular
Spectra, formerly known as Ultimate Addons for Gutenberg, is a powerful plugin that enhances the WordPress block editor (Gutenberg) by adding a suite of advanced, customizable blocks. Designed for users ranging from beginners to professionals, Spectra enables the creation of visually appealing, responsive websites without the need for coding. Its lightweight architecture ensures fast-loading pages, and it integrates seamlessly with popular themes like Astra. The GPL version provides access to premium features without recurring costs, making it an attractive option for developers and agencies.

Spectra Free vs Spectra Pro GPL — Comparison Table
Feature | Spectra Free | Spectra Pro GPL |
---|---|---|
Core Gutenberg Blocks | ✅ Yes | ✅ Yes |
Advanced Blocks (Slider, Modal) | ❌ No | ✅ Yes |
Animation & Effects | ✅ Basic | ✅ Advanced |
Block Templates | ✅ Limited | ✅ Full access |
Custom Layouts | ❌ No | ✅ Yes |
Integration with Astra Theme | ✅ Yes | ✅ Yes |
Support & Updates | ❌ No | ❌ Manual (GPL only) |
Usage Limitations | ✅ Unlimited Sites | ✅ Unlimited Sites |
Summary: The Pro GPL version unlocks premium features like advanced blocks and templates, but updates must be handled manually.
Can You Get Spectra Pro for Free?
Yes, you can get Spectra Pro for free through GPL-licensed sources. These versions offer full premium features without paying, and you can use them on unlimited websites. Just keep in mind—there’s no automatic updates or official support when using the GPL version.
Best Free or Budget–Friendly Alternatives to Spectra Pro
Here are some great options if you’re looking for similar Gutenberg block plugins:
- Kadence Blocks – A powerful free plugin with rich design features and layout options.
- Stackable – Offers stylish blocks and pre-built designs, great for creatives.
- GenerateBlocks – Lightweight and performance-focused, perfect for developers.
- CoBlocks – Free, easy-to-use, and adds useful content blocks to Gutenberg.
Each of these is free or has a low-cost pro version, making them great alternatives to Spectra Pro.
What Is Spectra Pro General Public License?
Spectra Pro is distributed under the GPL (General Public License), which means you can use, modify, and share it freely. You’re allowed to install it on unlimited websites and even tweak the code. However, using a GPL version means you won’t get official updates or support from the original developers.
Spectra Pro GPL vs Spectra Pro: What’s the Difference?
Feature | Spectra Pro GPL | Spectra Pro (Official) |
---|---|---|
Premium Blocks | ✅ Yes | ✅ Yes |
Templates & Layouts | ✅ Yes | ✅ Yes |
License Key Required | ❌ No | ✅ Yes |
Automatic Updates | ❌ No | ✅ Yes |
Official Support | ❌ No | ✅ Yes |
Price | Free (via GPL sources) | Paid (official website) |
Summary: Spectra Pro GPL offers the same features but skips official updates and support. Great for developers who can manage updates manually.
Spectra Pro Version History and Timeline
- 2018 – Launched as Ultimate Addons for Gutenberg, offering extended blocks for the Gutenberg editor.
- 2020 – Gained popularity with the rise of block-based design in WordPress.
- 2022 – Rebranded to Spectra with a cleaner UI, performance boost, and new block designs.
- 2023 – Introduced Spectra Pro with premium blocks like sliders, modals, and advanced display conditions.
- 2024 – Ongoing updates focused on speed, compatibility, and seamless design workflows with Astra.
Spectra continues to evolve as a leading block editor extension for modern WordPress sites.