| Cover | Dec. 21, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Dec. 21, 2021 |
| Entity File Number | 0-21683 |
| Entity Registrant Name | HOPTO INC. |
| Entity Central Index Key | 0001021435 |
| Entity Tax Identification Number | 13-3899021 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 189 N. Main Street |
| Entity Address, Address Line Two | Suite 102 |
| Entity Address, City or Town | Concord |
| Entity Address, State or Province | NH |
| Entity Address, Postal Zip Code | 03301 |
| City Area Code | (800) |
| Local Phone Number | 472-7466 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock |
| Trading Symbol | HPTO |
| Entity Emerging Growth Company | false |
