What is the WXB file format?
A .wxb file is a project created with watchX Blocks, the block-based coding editor for the watchX wearable. watchX is an Arduino-compatible, Scratch-compatible smartwatch and development board that you program yourself. Each .wxb file holds one program described as a set of connected code blocks.
Underneath, the file is plain XML. The watchX Blocks editor is built on Google's Blockly, so it serializes the block workspace as an XML tree. In the editor you see the same program three ways at once: as blocks, as generated Arduino source (much like an .ino sketch), and as the raw XML the file stores.
Security & safety
RISK: LOWA .wxb file is plain XML describing code blocks. It contains no executable code and runs nothing on its own, so opening one in the editor or a text viewer is safe. The only real-world action is compiling and flashing the generated program to a watchX device, which the user triggers deliberately.
Format details
in a nutshell- EXP Backup Document - Some file-lookup sites list an unverified, user-submitted association between .wxb and a backup/export document. No confirmed application uses this.
Programs that open WXB files
Windows3 apps
watchX Blocks
Free Open the file with File then Open to edit the program as blocks, then connect the watchX over USB and choose Program then Upload program. 
macOS2 apps
watchX Blocks
Free Load the project with File then Open, edit the blocks, and upload to a connected watchX. 
Linux2 apps
Technical details
deep spec| Encoding | UTF-8 text |
| Byte order | N/A (text format) |
| Container | XML document (Google Blockly workspace serialization) |
| Typical size | A few KB to tens of KB depending on program complexity |
| Structure | A Blockly XML tree describing the connected code blocks of a watchX program. The watchX Blocks editor uses this block graph to generate equivalent Arduino source code, which is then compiled and uploaded to the watchX device. |
| Platforms | Windows, macOS, Linux |
| Notes | watchX is an Arduino-compatible wearable/smartwatch development board. In the watchX Blocks editor the same program is shown three ways at once: as connected blocks, as generated Arduino source (like an .ino sketch), and as the underlying XML that a .wxb file stores. |
| Released | 2017 |
| Specification | www.watchx.io |
WXB conversions
Community Q&A
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