| Cover | Jan. 09, 2023 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Jan. 09, 2023 |
| Entity File Number | 001-35824 |
| Entity Registrant Name | PROFESSIONAL DIVERSITY NETWORK, INC. |
| Entity Central Index Key | 0001546296 |
| Entity Tax Identification Number | 80-0900177 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 55 East Monroe Street |
| Entity Address, Address Line Two | Suite 2120 |
| Entity Address, City or Town | Chicago |
| Entity Address, State or Province | IL |
| Entity Address, Postal Zip Code | 60603 |
| City Area Code | (312) |
| Local Phone Number | 614-0950 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, $.01 par value |
| Trading Symbol | IPDN |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
