Quest Converter VRChat: What It Does & How to Use
The Quest Converter in VRChat is a tool that converts avatars and worlds made for PC (Windows) into a format that runs on the Meta Quest headset. You enter the VRChat SDK (Software Development Kit) in Unity, run the converter, and it optimizes your creation so it meets the performance limits of the standalone Quest hardware.
Why VRChat Needs a Quest Converter
VRChat runs on two very different platforms. The PC version uses your computer’s graphics card and CPU, which can handle high-polygon models, complex shaders, and lots of dynamic lighting. The Quest version runs entirely on the headset’s mobile processor, which has far less power and memory. A PC avatar with 100,000 triangles and multiple 4K textures would run at a slideshow frame rate on Quest, or might not load at all.
The Quest Converter exists to bridge that gap. It takes a Unity project that was built for PC and automatically applies a series of optimizations to make it compatible with the Quest’s hardware. Without it, you would have to manually rebuild every asset from scratch—a process that could take hours or days.
How the Quest Converter Works
The converter is part of the VRChat Creator Companion (VCC), which is the official tool for managing VRChat Unity projects. Here is the basic process:
- Install the VRChat Creator Companion and create a new project with the Quest-compatible template.
- Import your PC avatar or world into the project.
- Open the VRChat SDK menu in Unity and select “Quest Converter.”
- The converter analyzes every asset and applies optimizations automatically.
- You then upload the converted version to VRChat as a separate Quest-compatible upload.
For avatars, the converter typically reduces polygon counts, downsizes or compresses textures, removes unsupported shaders, and replaces them with VRChat’s standard mobile shader. For worlds, it also removes dynamic lights, simplifies colliders, and reduces the number of draw calls.
What the Converter Changes (and What It Doesn’t)
It is important to understand that the converter is not magic. It makes a best-effort attempt to bring your assets within Quest limits, but it cannot fix everything. Here are the main changes it makes:
- Polygon reduction: It uses a mesh decimation algorithm to reduce triangle counts. The target is usually under 20,000 triangles for avatars, but you can set a custom limit.
- Texture compression: Textures are resized and compressed to formats the Quest can handle, usually 1024×1024 or smaller.
- Shader replacement: Any shader that does not work on Quest is replaced with VRChat’s Mobile/Toon shader, which is a simple, efficient shader.
- Material simplification: Materials with complex properties are simplified to the mobile shader’s supported properties.
- Particle removal: Particle systems that are too heavy or use unsupported features are removed or reduced.
- Animation stripping: Animations that reference unsupported components are stripped or simplified.
However, the converter cannot fix everything. For example, if your avatar uses a custom shader that has a specific look you want to preserve, the converter will replace it with the mobile shader, and you will lose that look. Similarly, if your world has a complex lighting setup, the converter will remove most of the lights, and the world will look flatter.
How to Choose Between PC and Quest Versions
When you upload an avatar or world to VRChat, you have the option to upload a PC-only version, a Quest-only version, or both. If you upload both, VRChat automatically shows the appropriate version to each user based on their platform. Here is how to decide:
- If your creation already meets Quest performance limits (under 20,000 triangles, under 1,024 textures, no unsupported shaders), you can upload the same version to both platforms.
- If your creation is heavy and you want it to look its best on PC, upload a PC version and a separate Quest version that you create using the converter.
- If you only care about Quest users, you can just upload the Quest version, but PC users will see it too (and it will look lower quality than they might expect).
Most creators upload both versions, because VRChat has a large Quest user base, and you want everyone to be able to see your work.
Common Problems and How to Fix Them
The Quest Converter is not perfect, and you may run into issues. Here are the most common problems and their solutions:
- Avatar is invisible or broken after conversion: This usually happens because a shader or material was not converted correctly. Check the console log for errors, and try manually reassigning the mobile shader to the materials.
- Performance is still bad after conversion: The converter may not reduce polygons enough. You can manually decimate the mesh further in Blender or Unity, or use a tool like the “Mesh Baker” to combine materials and reduce draw calls.
- Animations don’t work: Some animations use components that are not supported on Quest. You may need to remove or replace those animations manually.
- World is too bright or too dark: Because the converter removes dynamic lights, you may need to add baked lighting (lightmaps) to your world to compensate.
If you get stuck, the VRChat community forums and Discord are good places to ask for help. Many creators have solved the same problems you are facing.
Costs and Requirements
The Quest Converter is completely free. It is part of the VRChat Creator Companion, which is also free. However, you do need a PC that can run Unity (Windows or Mac), and you need to create a VRChat account (free) to upload content. You do not need to own a Quest headset to use the converter—you can upload Quest-compatible content without ever testing it on a Quest, though it is strongly recommended to test on a real headset before publishing.
Alternatives to the Quest Converter
If the converter does not give you the results you want, there are a few alternatives:
- Manual optimization: You can do all the steps yourself—decimate meshes, compress textures, replace shaders—using free tools like Blender and Unity’s built-in tools. This gives you full control but takes more time.
- Third-party tools: Some community tools like “Mesh Baker” or “Texture Atlas” can help with specific tasks, but they are not official VRChat tools.
- Start from a Quest-compatible template: Instead of converting a PC asset, you can build your avatar or world from scratch using Quest-compatible assets from the start. This avoids the conversion process entirely.
Frequently Asked Questions
Do I need a Quest headset to use the Quest Converter?
No, you do not need a Quest headset. The converter runs on your PC within Unity. However, it is highly recommended to test your converted content on an actual Quest headset before publishing, because some issues only appear on the real hardware.
Will the converter make my avatar look bad?
It can degrade the visual quality, but how much depends on your original asset. If your avatar uses high-resolution textures and complex shaders, the converter will simplify them, which can make it look less detailed. Many creators find that a well-optimized Quest avatar still looks good, especially if you manually adjust the settings.
Can I convert a world that uses custom shaders?
No, the converter will replace custom shaders with the mobile shader. If you want to keep a custom shader, you need to find a mobile-compatible version of that shader and manually apply it after conversion.
How long does the conversion take?
It depends on the complexity of your asset. A simple avatar might convert in a few seconds, while a large world with many objects could take several minutes. The converter shows a progress bar, so you can see how it is going.
Can I upload a Quest version without a PC version?
Yes, you can upload only a Quest version. However, PC users will see that version too, and it may look lower quality than they expect. Most creators upload both versions so that everyone gets the best experience.
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