| Document And Entity Information | Dec. 05, 2024 |
| Document Information [Line Items] | |
| Entity, Registrant Name | PROFESSIONAL DIVERSITY NETWORK, INC. |
| Document, Type | 8-K |
| Document, Period End Date | Dec. 05, 2024 |
| Entity, Incorporation, State or Country Code | DE |
| Entity, File Number | 001-35824 |
| Entity, Tax Identification Number | 80-0900177 |
| Entity, Address, Address Line One | 55 E. 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 |
| Trading Symbol | IPDN |
| Security Exchange Name | NASDAQ |
| Entity, Emerging Growth Company | false |
| Amendment Flag | false |
| Entity, Central Index Key | 0001546296 |
