---
url: https://docs.youcan.shop/changelog/theme-array-preload-filters.md
---

You can preload fonts with `preload_tag`, and you can pass nil or a property to `compact` and `uniq`.

***

# Array and preload filters

* You can use `font` and `fetch` in the `as` option of [`preload_tag`](/themes/filters/html/preloadTag).
* You can pass more options to `preload_tag`. Each option is added to the tag as an attribute.
* With [`compact`](/themes/filters/arrays/compact), only nil items are deleted. Empty strings, `0` and `false` are kept.
* You can pass nil to `compact` and [`uniq`](/themes/filters/arrays/uniq). You get an empty array.
* You can give a property name to `compact` and `uniq`.