# Gallery app not using previews generated by Preview Generator

**URL:** <https://help.nextcloud.com/t/gallery-app-not-using-previews-generated-by-preview-generator/21137>\
**Category:** ℹ️ Support\
**Tags:** nc12, ncp, previewgenerator-app\
**Created:** [September 18, 2017, 10:51am UTC](https://help.nextcloud.com/t/gallery-app-not-using-previews-generated-by-preview-generator/21137 "2017-09-18T10:51:31Z")\
**Posts on this page:** 1\
**Showing post:** 7

<div class="post-metadata">

**Author:** ![gas85](https://help.nextcloud.com/user_avatar/help.nextcloud.com/gas85/32/7772_2.png) [@gas85](https://help.nextcloud.com/u/gas85)\
**Post date:** [November 5, 2018, 10:18am UTC](https://help.nextcloud.com/t/gallery-app-not-using-previews-generated-by-preview-generator/21137/7 "2018-11-05T10:18:49Z")

</div>

Try to limit previews size in `config.php` to e.g. 1024 (basically if you need bigger, you can download original image already). For me it works fine, it reduced previews folder from 20+ Gb to 6Gb.

```
'preview_max_x' => 1024,
'preview_max_y' => 1024,

```

More about this config under [https://docs.nextcloud.com/server/14/admin\_manual/configuration\_server/config\_sample\_php\_parameters.html#previews](https://docs.nextcloud.com/server/14/admin_manual/configuration_server/config_sample_php_parameters.html#previews)

You can also added `occ preview:pre-generate` to cron to create new previews automatically.

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_[View the full topic](https://help.nextcloud.com/t/gallery-app-not-using-previews-generated-by-preview-generator/21137)._