Japanese “free Of Charge” Button

What does the Japanese “free Of Charge” Button emoji mean?

The white Japanese kanji meaning none or free appears inside an orange rounded-square button.

1. 01Represents free-of-charge access in Japanese signage
2. 02Signals no admission fee, complimentary service or zero cost
3. 03Can contrast directly with the paid-service button
4. 04Conveys absence of a charge rather than unrestricted freedom broadly