| 8-K Cover Page | Mar. 07, 2023 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Mar. 07, 2023 |
| Entity Registrant Name | YEXT, INC. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-38056 |
| Entity Tax Identification Number | 20-8059722 |
| Entity Address, Address Line One | 61 Ninth Avenue |
| Entity Address, City or Town | New York |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 10011 |
| City Area Code | 212 |
| Local Phone Number | 994-3900 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, par value $0.001 per share |
| Trading Symbol | YEXT |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
| Amendment Flag | false |
| Entity Central Index Key | 0001614178 |
