Initially, there were demos that I created by canvas, but now there is more than canvas.</br> If you are interested in learning how to create, you can find articles in my blog.</br>
a drawing board, you can draw and save a screenshot of your work
a round animation diaplays the changes according to percentage. canvas version / svg version
Hiragana helps to practice Japan hiragana and katakana in order to improve familiarity, this would be helpful if you are just started to learn Japan.
Japan Vocabulary helps in becoming familiar with hiragana at the N4 and N5 levels, the words are sourced from 新版中日交流标准日本语初级.
Html5 recording is useful to record your computer screen, you can download and review the video which you have recorded. related blog