I was just amazed at an online dictionary nowadays.

I was just impressed at an online dictionary. (Either it's a singular online dictionary or it's "the online dictionaries nowadays" as in all the dictionaries that are around recently. Also, if you want to put "amazed" in the past, you have to give us context of the time at which you were amazed, otherwise you are still amazed and should use the present tense. But that's because it's a special verb, you can used "impressed" here with no problem.)

When I was surfing on Internet, I was amazed by a browser extension of an online dictionary that can read English sentences aloud.
It reads texts you select. I felt it sounded like very natural pronunciation. (Use either "it sounded like" or "to listen to" not both.)
Absolutely,this essay which I am writing now can be read aloud.
I'm not sure if these sentences are good or bad, but they're very interesting.

This is Google Chrome's extension. Although I think Japanese people will never see this note. Just in case, I put URL to it. The usage is just to select sentences and right-click "pronounce this English." These functions can be used on the site "weblio."

https://chrome.google.com/webstore/detail/weblio%E3%83%9D%E3%83%83%E3%83%97%E3%82%A2%E3%83%83%E3%83%97%E8%8B%B1%E5%92%8C%E8%BE%9E%E5%85%B8/oingodpdjohhkelnginmkagmkbplgema



I'm feeling that the ways to learn English and environments for learning it are improving. (You don't have to have "from before" or "more and more," improving already means these things.)

Without some tools for learning or people who created them, I would have a harder time when learning.

Anyways, I'm thankful to them. :D