To launch siibra-explorer on EBRAINS, go to **<https://atlases.ebrains.eu/viewer>** using your web browser.
!!! note
To launch siibra-explorer on EBRAINS, point your webbrowser to:
**<https://atlases.ebrains.eu/viewer>**
Recommended browsers are up-to-date versions of [Firefox](https://www.mozilla.org/firefox) and [Google chrome](https://www.google.com/chrome). Newer versions of [Apple Safari](https://www.apple.com/safari/) also work fairly well. Note that your hardware needs to support the WebGL2 standard, which should be the case for recent devices. If in doubt, check compatibility at <https://get.webgl.org/webgl2/>.
At its core, the viewer presents a 3D view of a brain.
The precise layout of the 3D view depends on the select reference space.
For volumetric reference spaces, it presents 2D views of three orthogonal planes in the reference template, combined with a rotatable 3D overview of the brain surface indicating the location of these planes. The planes default to the coronal, sagittal and axial plane, and can be freely adjusted in position and orientation to select arbitrary oblique views.
The volumetric views support ultrahigh-resolution data, and can be zoomed in if the underlying image data allows. Each of the 3 planar views can be maximized using the "[ ]" icon in each view.
For pure surface spaces, such as the fsaverage space, the viewer shows only a 3D view.
- (Left) For volumetric reference spaces, it presents 2D views of three orthogonal planes in the reference template, combined with a rotatable 3D overview of the brain surface indicating the location of these planes. The planes default to the coronal, sagittal and axial plane, and can be freely adjusted in position and orientation to select arbitrary oblique views.
- (Middle) The volumetric views support ultrahigh-resolution data, and can be zoomed in if the underlying image data allows. Each of the 3 planar views can be maximized using the "[ ]" icon in each view.
- (Right) For pure surface spaces, such as the fsaverage space, the viewer shows only a 3D view.
At the top left of the user interface, `siibra-explorer` displays the 3D coordinate of the currently selected center of view together with the navigation icon 🧭. When you click it with the mouse pointer, a navigation panel opens, which allows to enter a different coordinates, and create a shareable link to the current view (see ["Storing and sharing 3D views"](../basics/storing_and_sharing_3d_views.md)).
The help button (ⓘ ) opens information about keyboard shortcuts and terms of use. Here you can also launch the interactive quick tour, which is started automatically when you use `siibra-explorer` for the first time.
### <u>↓</u> Download current view
#### <u>↓</u> Download current view
The download button (<u>↓</u>) will retrieve the reference template and parcellation map currently displayed in a zip file package
### ᎒᎒᎒ Plugins
#### ᎒᎒᎒ Plugins
The plugin button (᎒᎒᎒) reveals a menu of interactive plugins, including advanced tools for [annotation](../advanced/annotating_structures.md) and [differential gene expression analysis](../advanced/differential_gene_expression_analysis.md)
### 👤 Sign in with EBRAINS
#### 👤 Sign in with EBRAINS
The login button (👤) allows you to sign in with an EBRAINS account to access some custom functionalities for sharing.
!!! tip "Get an EBRAINS account!"
You can sign up for a free EBRAINS account at <https://ebrains.eu/register>
| Action | Desktop | Touch devices |
| --- | --- | --- |
| Translate / Pan | `[drag]` any of the slice views | `[drag]` any of the slice views |
| Oblique rotation | `<shift>` + `[drag]` any of the slice views | `[rotate]` any of the slice views |
| Zoom | `[mousewheel]` | `[pinch zoom]` |
| Zoom | `[hover]` on any slice views > `[click]` magnifier | `[tap]` on magnifier |
