| Cover | Apr. 12, 2022 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Apr. 12, 2022 |
| Entity File Number | 1-37782 |
| Entity Registrant Name | ZEDGE, INC. |
| Entity Central Index Key | 0001667313 |
| Entity Tax Identification Number | 26-3199071 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 1178 Broadway |
| Entity Address, Address Line Two | Ste 1450 (3rd Floor) |
| Entity Address, City or Town | New York |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 10001 |
| City Area Code | 330 |
| Local Phone Number | 577-3424 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Class B common stock, par value $.01 per share |
| Trading Symbol | ZDGE |
| Security Exchange Name | NYSEAMER |
| Entity Emerging Growth Company | false |
