This webpage is going to be best served to the Internet Browser built into the 3DS.
The Internet Browser was released with the device way back in 2011, and without any internal updates to the firmware, it is well behind the recent changes made to modern browsers.
The device can even use Javascript!
The browser is based off of "Netfront Browser NX v1.0", which is WebKit-based.
The region of the browser corresponds to its byte values in the ExeFS .code
Old 3DS
On Old 3DS, the exheader name is "SPIDER."
The latest version is Mozilla 5.0 1.7639
- HTML 4.01
- CSS 2.1
- SSLv3
- MPO
- GIF
- JPEG
- PNG
- BMP
- ICO
- Images
Adobe Flash does not work.
New 3DS
On New 3DS, the exhader name is "SKATER."
Screen Resolution
The top screen is 400x240.
The touch screen is 320x240.
The visible browser area is 400x215.
The visible browser touch area is 320x212, if the browser bar is shown.
The bottom touchable screen is treated as "visible area" for CSS coordinates.