v3.25.2
Cover Page
 6 Months Ended
Jun. 30, 2025
Document Information [Line Items]  
Document Type S-1
Amendment Flag false
Entity Registrant Name IMAGENEBIO, INC.
Entity Central Index Key 0001835579
Entity Tax Identification Number 81-1697316
Entity Address, Address Line One 12526 High Bluff Drive
Entity Address, Address Line Two Suite 345
Entity Address, City or Town San Diego
Entity Address, State or Province CA
Entity Address, Postal Zip Code 92130
City Area Code 858
Local Phone Number 345-6265
Entity Incorporation, State or Country Code DE
Entity Filer Category Non-accelerated Filer
Entity Small Business true
Entity Emerging Growth Company true
Entity Ex Transition Period false
Entity Primary SIC Number 2836
Business Contact [Member]  
Document Information [Line Items]  
Entity Address, Address Line One 12526 High Bluff Drive
Entity Address, Address Line Two Suite 345
Entity Address, City or Town San Diego
Entity Address, State or Province CA
Entity Address, Postal Zip Code 92130
City Area Code 858
Local Phone Number 345-6265
Contact Personnel Name Kristin Yarema, Ph.D.