Better Performance
- More efficient web asset caching, so pages load faster.
- Cleaned up, optimized code base (removing old/deprecated bits) for better speed and easier maintenance.
Modern Technology Stack
- Requires newer PHP versions (PHP 8.1+, etc.), which gives you security, performance, and newer features.
- Bootstrap updated (Bootstrap 5.3.2) for better UI responsiveness and modern styling.
- Uses newer libraries/tools (FontAwesome 6.4, CodeMirror 6, updated WebAuthn, etc.) for better front-end and editor features.
Improved Security
- Removal of outdated/insecure plugins (e.g. problematic Recaptcha versions), migration of events to classes, etc.
- Support for modern authentication, including multi-factor or passkey (passwordless login) methods.
Better Content & Media Handling
- Support for newer image formats like AVIF, which have better compression and quality.
- Improvements in editors (TinyMCE 6.7, etc.) – e.g. ability to align images directly, nicer editing UX.
Enhanced SEO and Structured Data
- Automatic integration of Schema.org markup for site and organization, richer snippets, better structured data support
- This can help with search engine visibility.
- Ability to use longer meta descriptions (≈ 300 characters), giving more scope for optimizing search listing previews.
User Interface / Usability Improvements
- Improved dark mode for the admin interface (Atum template), better usability for administrators.
- A cleaner, more modern UI in some parts, modal windows, better tools/UX in the back end.
More Extensible and Cleaner Development
- Cleaner APIs, more modern JS import maps, supporting tools that align with modern development best practices.
- Stricter version requirements drive extensions and custom developments to stay up to date.
Accessibility and Standards Compliance
- Default templates align with WCAG (Web Content Accessibility Guidelines), making sites more usable for people with disabilities.
- Better keyboard navigation, skip links, etc. built in.
Scalability, Stability & Ownership
- Joomla 5 is built so that it can scale from small websites to large ones. Its modular architecture, custom fields, flexible modules help with scaling.
- Data ownership: since Joomla is open source and self-hosted, you control your data, hosting etc.








