# Optimize performance and improve GTmetrix score, Google PageSpeed Insights

Using cache plugins is a great way to improve page performance and load times, it's up to each person to choose which plugin to use. E.g: [WP Rocket](https://wp-rocket.me/), [LiteSpeed Cache](https://vi.wordpress.org/plugins/litespeed-cache/), [WP Super Cache](https://vi.wordpress.org/plugins/wp-super-cache/) ...

And in addition to using the above cache plugins, in this article we guide you to use 2 great optimization plugins, it will significantly improve GTmetrix score as well as Google PageSpeed Insights. 

1. Plugin Autoptimize (By [Frank Goossens (futtta)](https://autoptimize.com/)) - <https://wordpress.org/plugins/autoptimize/>
2. Plugin Async JavaScript (By [Frank Goossens (futtta)](https://autoptimize.com/)) - <https://wordpress.org/plugins/async-javascript/>

Both plugins are authored By Frank Goossens (futtta).

And here is the result of the **ncmaz** theme after using the above 2 plugins:

|          | Before                                                                                                                      | After                                    |
| -------- | --------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------- |
| Mobile   | <mark style="color:orange;"><mark style="color:red;">30<mark style="color:red;"></mark><mark style="color:orange;">+</mark> | <mark style="color:green;">70+</mark>    |
| Desktop  | <mark style="color:green;">90+</mark>                                                                                       | <mark style="color:green;">95+</mark>    |
| GTmetrix | <mark style="color:orange;">**D+**</mark>                                                                                   | <mark style="color:green;">**B+**</mark> |

And now I will guide you to customize these 2 plugins to be compatible with the **Ncmaz** theme

#### I, Plugin Autoptimize (By [Frank Goossens (futtta)](https://autoptimize.com/)) - <https://wordpress.org/plugins/autoptimize/>

You should customize it as shown in the image below

![](/files/7b1X8KnjDl0lHBmqeyLA)

#### II,Plugin Async JavaScript (By [Frank Goossens (futtta)](https://autoptimize.com/)) - <https://wordpress.org/plugins/async-javascript/>

You should customize it as shown in the image below

![](/files/8uoTU9CNp4YG818QgzAZ)

### Hope it can help with your site 💪!


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