The top 5 most clicked links from the TYPO3 Newsletter November 2025

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12/15/2025 | General | Estimated reading time : min.

This article was automatically translated using DeepL. Therefore, inaccuracies may occur.

My last newsletter triggered some exciting reactions. Today I'm showing you the five links that were clicked on the most. These are the topics that you were particularly interested in.

1. seven editorial tips for AI-optimized TYPO3 websites

Do you want your TYPO3 content to be more visible in ChatGPT and other AI systems? The good news: you don't need a major rebuild. With seven editorial adjustments in the TYPO3 backend, you can make your website more AI-friendly. It's all about personal answers, easy-to-understand content, mini FAQs and visible author information. This way, you will be better understood by AI search systems and cited more often.

Read the article: Editorial measures for AI optimization in TYPO3

2. attention: symfony/dependency-injection 7.4 can break TYPO3 systems

Since 27.11.2025, version 7.4 of the symfony/dependency-injection package has been causing problems in TYPO3 installations. Extensions that were written to be compatible across versions are particularly affected. The new version forces Composer to load all PHP files. This can lead to errors. A temporary fix is to explicitly request version 7.3.x in composer.json.

To the article: symfony/dependency-injection 7.4 problems

3. composer 2.9 brings automatic security check for TYPO3

Composer 2.9 is here and brings three practical new features. The automatic blocking of insecure packages is particularly relevant. By default, Composer prevents updates to packages with known security vulnerabilities. This reduces the risk of rolling out vulnerable versions in production environments. There are also new CLI commands for repository management and automatic resolution of lockfile conflicts.

Read the article: Composer 2.9 with security check

4. TYPO3 v14: Asset handling gets leaner - what's changing

TYPO3 v14 tidies up asset handling. HTTP Response Compression and Asset Concatenation will be removed. Many instances are not affected by this. There are sensible alternatives for the others. Compression is handled more efficiently by modern web servers. And with HTTP/2, asset concentration is often no longer necessary. This article shows you how to check whether you are affected and which steps make sense.

To the article: TYPO3 v14 asset handling

5 TYPO3 v14: Three Fluid 5 breaking changes for integrators

Fluid 5 in TYPO3 v14 brings three important breaking changes. CDATA is no longer used for commenting out. Variable names with underscore prefix are prohibited. In addition, ViewHelpers become more type-safe. Good to know: TYPO3 13.4.21 already warns you in the deprecation log if your templates are affected. The article explains how you can adapt your templates.

To the article: Fluid 5 Breaking Changes

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[Translate to English:] Wolfgang Wagner, TYPO3 Experte und Trainer

[Translate to English:] TYPO3 Certified Integrator

Who writes here?

Hi, I'm Wolfgang.

Since 2006, I've been diving deep into the fascinating world of TYPO3 - it's not only my profession, but also my passion. My path has taken me through countless projects, and I have created hundreds of professional video tutorials focusing on TYPO3 and its extensions. I love unraveling complex topics and turning them into easy-to-understand concepts, which is also reflected in my trainings and seminars.

As an active member of the TYPO3 Education Committee, I am committed to keeping the TYPO3 CMS Certified Integrator exam questions up to date and challenging.

But my passion doesn't end at the screen. When I'm not diving into the depths of TYPO3, you'll often find me on my bike, exploring the scenic trails around Lake Constance. These outdoor excursions are my perfect balance - they keep my mind fresh and always provide me with new ideas.