This is a site aimed at Japanese people. Onomatopoeias are introduced through articles that use them and real examples from Twitter.
It's a site about onomatopoeias with an interesting design.

• You can read articles about onomatopoeias.
• You can see actual examples of how the onomatopoeias are used on Twitter.
• You can try making your own onomatopoeias.
• Firefox,Chrome and IE version 8 or above is recommended.

How to...

On the top of the page, you can see onomatopoeias displayed. Mousing over one will show an example taken from Twitter.

On the top, the onomatopoeia ranking is displayed.

To see the menu, scroll the screen down.

In the “ONOMATOPE COLUMN” page, you can read about onomatopoeias in various themes, like regional accents, history and gitaigo (mimetic words).

If you click on “ONOMATOTTER”, you will be taken back to the top of the page with the onomatopoeias displayed.
Seeing the actual uses of the onomatopoeias is interesting, and the page is designed to refresh in intervals.

On the “medical onomatope” page, you can read about the ways to express pain using onomatopoeias.

When you don’t know an onomatopoeia for pain, please search the “NIHONGO-de-Care Navi”.

On the “medical onomatope” page, there is a corner called the “Onomatodama”(Onomatopoeia Ball).

You can create your own onomatopoeia to express pain.

First, select the "もと"(base).

Next, pull in the direction of the arrow and the process will start.

Next, select how the onomatopoeia will change.

Finally, your "onomatodama" is complete.

Even if the columns are hard to read for some users, it’s a fun site to make your own "onomatodama" and see the rankings of onomatopoeia.