Joomla Upgrade Guide — Every Version Path Explained
If your Joomla website is running on a version that has reached end of life, this guide helps you understand what an upgrade involves, which target version is right for your situation, and what to expect throughout the process. Whether you are running Joomla 1.5 from 2008 or Joomla 4 from last year, there is a clear path forward.
We maintain dedicated pages for each upgrade path with detailed technical information. This guide provides the overview and helps you navigate to the right starting point.
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Joomla Version Status — Where Does Your Site Stand?
| Version | Status | End of Life | Risk Level | Action Required |
|---|---|---|---|---|
| Joomla 1.0 / 1.5 | End of Life | September 2012 | Critical — 13+ years unpatched | Migrate to Joomla 5 or 6 → |
| Joomla 2.5 | End of Life | December 2014 | Critical — 11+ years unpatched | Migrate to Joomla 5 or 6 → |
| Joomla 3.x | End of Life | August 2023 | High — 2.5+ years unpatched | Upgrade to Joomla 5 → or Joomla 6 → |
| Joomla 4.x | End of Life | October 2025 | Moderate — recently unsupported | Upgrade to Joomla 5 → or Joomla 6 → |
| Joomla 5.4 | LTS (Supported) | Active | Low — current and patched | Maintain. Plan future upgrade to Joomla 6 at your pace. |
| Joomla 6.0.4 | Current Release | Active | Lowest — latest version | Maintain. You are on the most current version. |
Understanding the Difference: Upgrade vs Migration
Upgrade means applying a new version to your existing installation. Your database, content, configuration, and (usually) your extensions continue working. Joomla 4 to 5 and Joomla 5 to 6 are upgrades — performed through the Joomla Update component with a well-defined, relatively straightforward process.
Migration means installing a fresh copy of the target version and transferring data from the old installation. The template must be rebuilt, extensions must be replaced, and the database must be carefully transferred. Joomla 1.5, 2.5, and 3 to modern Joomla are migrations — the architecture changed so fundamentally that an in-place upgrade is not possible.
Migrations are more complex, take longer, and cost more than upgrades. But the result is the same: a modern, secure, supported website.
Which Target Version: Joomla 5 or Joomla 6?
Choose Joomla 5 If:
- You prioritise proven stability and maximum extension compatibility
- Your website relies on extensions that have not yet confirmed Joomla 6 native support
- Your organisation prefers conservative technology choices
- You plan to upgrade to Joomla 6 later when the extension ecosystem has fully matured
Choose Joomla 6 If:
- You want the latest features and the longest runway before the next major upgrade
- Your extensions support Joomla 6 (natively or through the Compatibility Plugin)
- You are migrating from a legacy version (1.5, 2.5) and rebuilding anyway — might as well target the latest
- You value automatic core updates and the most modern codebase
Our free site audit assesses your specific extension configuration and recommends the most appropriate target version.
Upgrade Paths at a Glance
From Joomla 3 — The Most Common Migration
Joomla 3 is the largest pool of end-of-life Joomla websites. Over a decade of the platform's most popular era means millions of sites were built on Joomla 3 — and many still run on it today, over two and a half years after end-of-life.
Joomla 3 requires a migration, not a simple upgrade. The process passes through Joomla 4 as a technical bridge before reaching Joomla 5 or 6. Templates must be rebuilt. Extensions must be replaced or updated. But all content, users, and media transfer through the process.
From Joomla 4 — The Easiest Path
Joomla 4 reached end of life in October 2025 — recently enough that the urgency may not feel acute, but the clock is ticking. The good news: Joomla 4 to 5 is a standard upgrade within the same architectural family. Templates generally transfer. Most extensions work with minor updates.
From Legacy Versions (1.x, 1.5, 2.5) — Full Migration Required
Legacy Joomla sites require the most extensive migration work. The architecture, database structure, template system, and extension ecosystem have changed completely between these versions and modern Joomla. Everything must be rebuilt, with data carefully transferred from the old installation.
What Every Upgrade Includes
Regardless of your starting version, every upgrade project we deliver follows the same structured process:
- Free comprehensive audit — we assess your entire installation before quoting
- Fixed-price quotation — you know the cost before work begins
- Staging environment — all work performed on a copy, your live site stays operational
- Extension compatibility handling — every extension updated, replaced, or rebuilt as needed
- Template implementation — updated, customised, or rebuilt for the target Joomla version
- SEO preservation — 301 redirect mapping, metadata transfer, sitemap configuration
- EU compliance check — GDPR and accessibility baseline assessment included
- Thorough testing — before anything goes live
- Your approval — you test and confirm before we switch
- Zero-downtime deployment — live switchover takes minutes
- 30-day warranty — post-upgrade support included
After the Upgrade
An upgrade is not the end — it is a new beginning. To protect your investment:
- Maintenance plans keep your site updated, secure, and performing well
- Managed hosting provides optimised European infrastructure
- GDPR compliance ensures your site meets EU data protection requirements
- Accessibility compliance addresses European Accessibility Act obligations
Find Your Starting Point
If you are not sure which Joomla version your website is running, or you want a professional assessment of what your upgrade will involve — our free audit identifies everything and delivers a clear report within 24 hours.