website takes time in loading

[Elladen91gd45e]

I have created my website about Culper precision. recently ,  I have changed the theme of website. due to these changings my website take time in loading that is sometime more irritating for me.

[Sanjay Jethva]

@Elladen91gd45e 

Regarding your question,

Check your site speed with tools like:

https://gtmetrix.com/

or

https://tools.pingdom.com/

also check server CPU usage, storage/ram, etc...

[shahbaz_siddiqu]

Have you checked the Cache status in Magento admin, may be its disabled, you can enable it from Magento Admin by going to System -> Cache Management -> Check the enable status.
See this
you can also change it from cli by command

php bin/magento cache:enable

[LitExtension Expert]

I would like to suggest 10 steps to Speed up:
Step 0: System -> Cache Management -> Check the enable status.
Step 1: Optimize Server and System Requirements
Step 2: Update latest version of Magento 2
Step 3: Enable Varnish Cache
Step 4: Configure Memcached
Step 5: Enable Flat Categories and Products
Step 6: Optimize Javascript and CSS
Step 7: Setup Content Delivery Network
Step 10: Optimize Images

Hope that helps!