# Preview-Generator Bilder

The app does not replace on demand preview generation so if a preview is requested before it is pre-generated it will still be shown. The first time you install this app, before using a cron job, you properly want to generate all previews via: **./occ preview:generate-all -vvv**

**Important**: To enable pre-generation of previews you must add **php /var/www/nextcloud/occ preview:pre-generate** to a system cron job that runs at times of your choosing.

[Quelle](https://apps.nextcloud.com/apps/previewgenerator)