I tried several image compression and site speeding tools and WordPress plugins, but they often caused problems, such as images not displaying or the site going blank.

Twicpics delivers optimised images through CDN without processing the site's images, so I was able to make my site faster without the above problems.

In total, the site has about 400,000 PV per month, but the data usage is only about 10 GB per month at most.

Highly recommended!