A good meta description acts as an organic advertisement, so use enticing messaging with a clear call to action to maximize click-through rate.
You can check for errors in your file using Google Search Console (formerly Webmaster Tools) by selecting 'Tester' under 'Crawl'.
This also allows you to test individual pages to make sure that Googlebot has the appropriate access.
It allows to reduce the size of web pages and any other typical web files to about 30% or less of its original size before it transfer.
To check this for your website, enter your IP address in the browser and see if your site loads with the IP address.
Never duplicate your title tag content in your header tag.