| Cover | Jun. 26, 2023 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Jun. 26, 2023 |
| Entity Registrant Name | 1stdibs.com, Inc. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-40453 |
| Entity Tax Identification Number | 94-3389618 |
| Entity Address, Address Line One | 51 Astor Place, 3rd FloorNew York, New York 10003 |
| Entity Address, City or Town | 51 Astor Place, 3rd FloorNew York, New York 10003 |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 51 Astor Place, 3rd FloorNew York, New York 10003 |
| Local Phone Number | (212) 627-3927 |
| City Area Code | 51 Astor Place, 3rd FloorNew York, New York 10003 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, $0.01 par value per share |
| Trading Symbol | DIBS |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
| Entity Central Index Key | 0001600641 |
| Amendment Flag | false |
