RBXLX File

What are RBXLX files and how to open them

Are you having problems opening a RBXLX file or are you simply curious about its contents? We're here to explain the properties of these files and provide you with software that can open or handle your RBXLX files.

What is a RBXLX file?

A .RBXLX file is a ROBLOX XML Place file.

ROBLOX XML Place files store Roblox game location data in human-readable XML form and are saved with the .RBXLX extension. They describe an entire "place" (a game world including parts, models, scripts, teams, lighting, workspace settings, etc.). These files are created and edited using Roblox Studio.

Roblox Studio offers two save/export formats for places: the XML format (.RBXLX), which is large but readable, and a binary format (.RBXL), which is compact but not easy for humans to read. Using the XML version is useful when you want to version control, inspect, or manually modify contents. Places saved as .RBXLX can be uploaded via Roblox's creation APIs using content-type application/xml.

Internally the XML starts with a root <roblox> element with attributes like version="4", xmlns:xmime, xmlns:xsi, and xsi:noNamespaceSchemaLocation pointing to roblox.xsd. Instances are represented by <Item> elements with attributes class and referent, children <Properties> elements list individual property fields like Anchored, BrickColor, Size, scripts etc. Type elements such as Vector3, Color3, bool, int, double, UDim, etc. are used.

Byte-signatures for .RBXLX include an XML header at offset 0: the ASCII text starting "<roblox xmlns:xmime="http://www.w3.org/2005/05/xmlmime" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="http://www.roblox.com/roblox.xsd" version="4">" along with keywords such as PROPERTIES, Item, VECTOR3 NAME, COLOR3 NAME, BOOL NAME, etc. that are common in the file.

How to open RBXLX files

We have identified one RBXLX opener that is compatible with this specific type of RBXLX file.

Programs that open ROBLOX XML Place files

Last updated: August 10, 2026

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