What is XRoid?

This section explains the term "XRoid" as used in VRoid Studio's dress-up feature.

 

XRoid

XRoid is one of the data formats specific to the dress-up feature.

It is a project file format used to save data during the dress-up process.

It cannot be used outside of the dress-up feature.

 

XRoid files consolidate all editing data from the dress-up feature—including VRM, XAvatar, XWear, and any changes made—into a single file.

This format stores the base model, costumes, accessories, mesh deletion data for the base model, and costume transformation details.

 

How to save an XRoid file

Click "Save (.xroid)" or "Save As... (.xroid)" from the top left menu.

 

How to open an XRoid file

On the model selection screen, click on the thumbnail under "Recently Edited" or click "Open" to launch a file dialog and select your desired XRoid file.

 

Differences in XRoid files based on your base model

In dress-up editing, you can use XAvatar, VRM, or VRoid files as your base model.
The format of your base model affects how thumbnails are displayed on the model selection screen.
For XRoid files, the thumbnail displays the full body.

Base model format	Available editing options
VRoid	VRoid editing (XWear is not editable), dress-up editing
XAvatar, VRM	Dress-up editing

*"Base model format" refers to the format of the file used as the base model in dress-up editing.

 

If your base model is a VRoid file...

When you use a VRoid file as your base model, the thumbnail will show an XRoid badge as well as another badge indicating it's a VRoid base model.
If your XRoid file includes a VRoid base model, you can edit the base model in the VRoid editing tab.
However, you won't be able to edit any costumes (XWear) added during dress-up editing.

This setup makes it more convenient to use VRoid files as base models for dress-up. 
If you want to modify the base model after dressing it up, you can directly edit
the XRoid file in VRoid Studio.

 

If your base model is an XAvatar or VRM file...

The thumbnail will only show an XRoid badge.
In this case, you'll only be able to use dress-up editing.

 

Example model used
・Base model by VRoid
・SilverSpace's Artemis Sailor costume

 

Supported software

• VRoid Studio (dress-up feature only)

 

Glossary index

Term	Overview	Supported software
▼Dress-up feature
XAvatar	Avatar data for the dress-up feature. Also used to upload dressed-up models to VRChat.	・VRoid Studio (dress-up feature only) ・Unity (requires VCC and XWear Package)
XWear	Costume and accessory data for the dress-up feature.	・VRoid Studio (dress-up feature only) ・Unity (requires VCC and XWear Package)
XRoid	Save data for the dress-up feature. Stores mesh deletions and costume modifications reversibly.	・VRoid Studio (dress-up feature only)
XWear Packager	A Unity editor extension that provides features specifically for the dress-up feature. Used to create XAvatar and XWear.  Also used to upload dressed-up models to VRChat.	・Unity (requires VCC)
▼VRoid editor
.vroid	Editing data used in the VRoid Studio editor. Can be used as avatar data in the dress-up feature.	・VRoid Studio (VRoid editor and dress-up feature)
Custom items	Data for individual parts managed within the VRoid Studio editor. Clothing and accessories can be exported as XWear.	・VRoid Studio (VRoid editor only)
▼Other
VRM	Common file format for handling character avatars.   Can be used as avatar data in the dress-up feature.	・VRoid Studio (editing available in the dress-up feature only) ・Unity (requires UniVRM)
FBX	A 3D file format. After setup for VRChat, converts to XAvatar or XWear for use in the dress-up feature.	・Modeling software ・Unity etc.
unitypackage	Data format for handling avatars, costumes, and accessories set up specifically for VRChat. Converts to XAvatar or XWear for use in the dress-up feature.	・Unity