R800ZZbrowser for PICO/Meta Ver 1.0
The Web Browser supporting chroma key compositing, passthrough, and WebXR. VR video player , VR180 supported.
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Update 25 AUG 2026 (Ver 1.0 , APK Update 25 AUG 2026)
PICO VR
Chroma key web browser , This is a Wolvic-based Web browser and VR video player.
web engine can choose between Gecko and Chromium. For now, you can choose either.
We are doing a major modification to support chroma key.
We are rebuilding the VR180 part to address Wolvic’s VR180 bugs on PICO 4 Ultra/PICO 4.
We are heavily modifying Gecko to support WebXR AR (immersive-ar) (excluding hit-test). The original Gecko does not support AR.
We are also fixing some WebXR bugs in Gecko (bugs still remain).
Chromium (wolvic-chromium) is fixing a critical bug that does not support HTML <select>.
Video file playback has been added in Ver. 0.2.
It is now a video player as well as a web browser.

Download R800ZZbrowser 1.0 (github)(APK Update 25 AUG 2026)

• Wolvic(Gecko/Chromium)-based
• (When selecting a file)File access permission is required in the OS-side application settings.
• Developer : R800ZZ
• Supported devices : PICO 4 Ultra , PICO 4 , Meta Quest 3/3S/2
• Stand-alone : A PC is not required.
• Price : Free
• chroma key : 5 different modes (green / black / white / sky blue / Automatically select the background color.)
• VR Mode(WebGL) : Switch to full screen if possible. If full screen is not possible, select "VR mode(WebGL)" from the menu.
• AI Passthrough(PICO Test) : This is an experimental feature only for PICO. It does not work well. Attempts to make the background transparent using AI.
• I developed on PICO 4 Ultra.
  After completing the PICO version, I ported it to Meta.
• I made improvements and bug fixes to Wolvic(Gecko/Chromium).

WebXR was released in 2019.
Gecko should have urgently needed to support AR.
However, Gecko did not support AR.
I thought that if nothing was done, Gecko would never support AR.
So I modified Gecko to support AR. However, it does not support hit-test.
I also build a Wolvic-chromium based browser.
You can witness the historic moment that overturns the common belief that Gecko does not support AR(WebXR immersive-ar).

VR Mode(WebGL) VR180 SBS
1.Switch to full screen if possible. If full screen is not possible, select "VR mode(WebGL)" from the menu.
2.Select the goggle icon
3.Selecting "Stereo 180 Left to Right" will enable VR180 SBS mode.

Open video file

VR video Creation
VR180 SBS videos with a green background can be created using "R800ZZ WebXR PMX+VRM Viewer".


Android Native
R800ZZbrowser is Android Native.
R800ZZbrowser does not use game engines like Unity or Unreal Engine.
It is not an app that only manipulates the Android surface with C# on top of a game engine.
It directly accesses Android with C++ without a game engine.

Development environment: C++ , Java

source code
https://github.com/r800zz/r800zzbrowser
https://github.com/r800zz/wolvic-gecko-r800zz(wolvic-gecko , web engine)
https://github.com/r800zz/wolvic-chromium(wolvic-chromium , web engine)
I hope the improvements can be integrated into Wolvic , wolvic-gecko , wolvic-chromium, but it may be difficult since it is a major modification and has only been tested on PICO and Meta.

Closely related sister software (by the same author) : R800ZZ VR Player for PICO 4 Ultra/PICO 4

R800ZZ WebXR PMX+VRM Viewer(new)
R800ZZ WebXR VRM Viewer
R800ZZ WebXR Gal Shooting(new)
R800ZZ WebXR Volley Rally(new)
WebXR Unity,Ayame no meaning

wolvic-chromium HTML <select> bug fixed


vr180g.com