**Installation** ----------------------------- **System requirements** ~~~~~~~~~~~~~~~~~~~~~~~~ Web application for spatial registration of histological section images from rodent brains to reference 3D atlases. Any web browser can be used. **Conditions of use** ~~~~~~~~~~~~~~~~~~~~~~ **Licence:** Source code: MIT License. **Citation of the tool:** -RRID on SciCrunch: (WebWarp, RRID:SCR_026759) - Puchades M, Yates SC, Csucs G, Carey H, Balkir A, Leergaard T, Bjaalie JG. Software and pipelines for registration and analyses of rodent brain image data in reference atlas space. Frontiers of Neuroinformations. 2025. https://doi.org/10.3389/fninf.2025.1629388 **Access** ~~~~~~~~~~~~ WebWarp can be accessed through our integrated workflows with an EBRAINs account: 1. The QUINT online workflow, accessible here: https://quint-online.apps.ebrains.eu/, more information about the QUINT online workflow can be found here: https://quint-webtools.readthedocs.io/en/latest/index.html 2. The LocaliView workflow: https://localiview.apps.ebrains.eu/, more information about the QUINT online workflow can be found here: https://localiview.readthedocs.io/en/latest/Introduction.html