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[Utility & Helpers](/categories/utility) 4. / 5. leuchtfeuer/alt-text-checker ActiveTypo3-cms-extension[Utility & Helpers](/categories/utility) leuchtfeuer/alt-text-checker ============================ TYPO3 extension that adds a warning overlay icon in the File List module for files missing alternative text, and adds an Alternative text column to file reference tables in the backend. v1.0.2(3mo ago)07GPL-2.0-or-laterHTMLPHP >=8.2 Since Mar 19Pushed 2mo agoCompare [ Source](https://github.com/Leuchtfeuer/alt-text-checker)[ Packagist](https://packagist.org/packages/leuchtfeuer/alt-text-checker)[ Docs](https://www.Leuchtfeuer.com)[ RSS](/packages/leuchtfeuer-alt-text-checker/feed)WikiDiscussions main Synced 3w ago READMEChangelog (3)Dependencies (8)Versions (4)Used By (0) Alt Text Checker ================ [](#alt-text-checker) TYPO3 extension that adds a warning overlay icon to files in the File List module when the file is missing alternative text, and adds an "Alternative text" column to the file reference tables in the backend. Requirements ------------ [](#requirements) - TYPO3 13.4+ Installation ------------ [](#installation) ``` composer require leuchtfeuer/alt-text-checker ``` After installation, clear the TYPO3 cache. No further configuration is required — the extension works out of the box. What it does ------------ [](#what-it-does) ### Warning icon in the File List [](#warning-icon-in-the-file-list) The extension hooks into TYPO3's icon rendering via the PSR-14 `ModifyIconForResourcePropertiesEvent`. It adds an `overlay-warning` icon to any file in the **File List** module when: - the file itself has no alternative text set in `sys_file_metadata`, **or** - any of its file references has no alternative text set in `sys_file_reference` This gives editors a quick visual cue to identify images that need attention before publishing. [![Warning icon in File List](Documentation/Assets/listview.png)](Documentation/Assets/listview.png) ### "Alternative text" column in reference tables [](#alternative-text-column-in-reference-tables) The extension overrides the backend `ElementInformation` template to add an **Alternative text** column to the "References to this item" table. The column shows: ValueMeaningYesAll file references for this relation have alternative text setNoAt least one file reference for this relation is missing alternative textThe column is visible when viewing the info panel of any file in the backend (click the info icon next to a file in the File List). [![References table with Alternative text column](Documentation/Assets/tableview.png)](Documentation/Assets/tableview.png) How to use ---------- [](#how-to-use) 1. Open the **File** module in the TYPO3 backend. 2. Navigate to the folder containing your images. 3. Any image with a yellow warning overlay icon is missing alternative text — either at the file level or in one of its references. 4. Click the **info icon** (ℹ) next to a file to open the element information panel. 5. Scroll to the **References** section. The **Alternative text** column shows `Yes` or `No` for each relation. 6. To fix a missing alt text: - **At file level:** Edit the file metadata and fill in the **Alternative Text** field (`sys_file_metadata.alternative`). - **At reference level:** Edit the content element or record that references the file and fill in the **Alternative Text** field on the image relation. Once all missing alt texts are filled in and the cache is cleared, the warning icon disappears. Localization ------------ [](#localization) The extension ships with English and German translations. To add your own language, create a translation file. License ------- [](#license) GPL-2.0-or-later ### Health Score 38 — LowBetter than 83% of packages Maintenance83 Actively maintained with recent releases Popularity4 Limited adoption so far Community8 Small or concentrated contributor base Maturity48 Maturing project, gaining track record Bus Factor1 Top contributor holds 98% of commits — single point of failure How is this calculated?**Maintenance (25%)** — Last commit recency, latest release date, and issue-to-star ratio. Uses a 2-year decay window. **Popularity (30%)** — Total and monthly downloads, GitHub stars, and forks. Logarithmic scaling prevents top-heavy scores. **Community (15%)** — Contributors, dependents, forks, watchers, and maintainers. Measures real ecosystem engagement. **Maturity (30%)** — Project age, version count, PHP version support, and release stability. ### Release Activity Cadence Every ~2 days Total 3 Last Release 95d ago ### Community Maintainers ![](https://avatars.githubusercontent.com/u/20301893?v=4)[Leuchtfeuer Digital Marketing](/maintainers/LeuchtfeuerDigitalMarketing)[@LeuchtfeuerDigitalMarketing](https://github.com/LeuchtfeuerDigitalMarketing) --- Top Contributors [![AkhmedSagitov](https://avatars.githubusercontent.com/u/115067169?v=4)](https://github.com/AkhmedSagitov "AkhmedSagitov (49 commits)")[![iwillenbrock](https://avatars.githubusercontent.com/u/132353832?v=4)](https://github.com/iwillenbrock "iwillenbrock (1 commits)") ### Embed Badge ![Health badge](/badges/leuchtfeuer-alt-text-checker/health.svg) ``` [![Health](https://phpackages.com/badges/leuchtfeuer-alt-text-checker/health.svg)](https://phpackages.com/packages/leuchtfeuer-alt-text-checker) ``` ### Alternatives [friendsoftypo3/content-blocks TYPO3 CMS Content Blocks - Content Types API | Define reusable components via YAML 101466.4k45](/packages/friendsoftypo3-content-blocks)[pagemachine/typo3-formlog Form log for TYPO3 23233.9k8](/packages/pagemachine-typo3-formlog)[fluidtypo3/flux The flux package from FluidTYPO3 145999.7k24](/packages/fluidtypo3-flux)[eliashaeussler/typo3-form-consent Extension for TYPO3 CMS that adds double opt-in functionality to EXT:form 1590.6k](/packages/eliashaeussler-typo3-form-consent)[wazum/sluggi TYPO3 extension for URL slug management with inline editing, auto-sync, locking, access control, and redirects 41515.2k](/packages/wazum-sluggi)[typo3/cms-install TYPO3 CMS Install Tool - The Install Tool is used for installation, upgrade, system administration and setup tasks. 1812.0M439](/packages/typo3-cms-install) PHPackages © 2026 [Directory](/)[Categories](/categories)[Trending](/trending)[Changelog](/changelog)[Analyze](/analyze)