# `info.json` This file is used by the [QMK API](https://github.com/qmk/qmk_api). It contains the information [QMK Configurator](https://config.qmk.fm/) needs to display a representation of your keyboard. You can also set metadata here. You can create `info.json` files at every level under `qmk_firmware/keyboards/<name>` to specify this metadata. These files are combined, with more specific files overriding keys in less specific files. This means you do not need to duplicate your metadata information. For example, `qmk_firmware/keyboards/clueboard/info.json` specifies `manufacturer` and `maintainer`, while `qmk_firmware/keyboards/clueboard/66/info.json` specifies more specific information about Clueboard 66%. ## `info.json` Format The `info.json` file is a JSON formatted dictionary with the following keys available to be set. You do not have to set all of them, merely the keys that apply to your keyboard. * `keyboard_name` * A free-form text string describing the keyboard. * Example: `Clueboard 66%` * `url` * A URL to the keyboard's product page, [QMK.fm/keyboards](https://qmk.fm/keyboards) page, or other page describing information about the keyboard. * `maintainer` * GitHub username of the maintainer, or `qmk` for community maintained boards * `width` * Width of the board in Key Units * `height` * Height of the board in Key Units * `layouts` * Physical Layout representations. See the next section for more detail. ### Layout Format Within our `info.json` file the `layouts` portion of the dictionary contains several nested dictionaries. The outer layer consists of QMK layout macros, for example `LAYOUT_ansi` or `LAYOUT_iso`. Within each layout macro are keys for `width`, `height`, and `key_count`, each of which should be self-explanatory. * `width` * Optional: The width of the layout in Key Units * `height` * Optional: The height of the layout in Key Units * `key_count` * Optional: The number of keys in this layout * `layout` * A list of Key Dictionaries describing the physical layout. See the next section for more details. ### Key Dictionary Format Each Key Dictionary in a layout describes the physical properties of a key. If you are familiar with the Raw Code for <http://keyboard-layout-editor.com> you will find many of the concepts the same. We re-use the same key names and layout choices wherever possible, but unlike keyboard-layout-editor each key is stateless, inheriting no properties from the keys that came before it. All key positions and rotations are specified in relation to the top-left corner of the keyboard, and the top-left corner of each key. * `x` * **Required**: The absolute position of the key in the horizontal axis, in Key Units. * `y` * **Required**: The absolute position of the key in the vertical axis, in Key Units. * `w` * The width of the key, in Key Units. Ignored if `ks` is provided. Default: `1` * `h` * The height of the key, in Key Units. Ignored if `ks` is provided. Default: `1` * `r` * How many degrees clockwise to rotate the key. * `rx` * The absolute position of the point to rotate the key around in the horizontal axis. Default: `x` * `ry` * The absolute position of the point to rotate the key around in the vertical axis. Default: `y` * `ks` * Key Shape: define a polygon by providing a list of points, in Key Units. * **Important**: These are relative to the top-left of the key, not absolute. * Example ISO Enter: `[ [0,0], [1.5,0], [1.5,2], [0.25,2], [0.25,1], [0,1], [0,0] ]` * `label` * What to name this position in the matrix. * This should usually be the same name as what is silkscreened on the PCB at this location. ## How is the Metadata Exposed? This metadata is primarily used in two ways: * To allow web-based configurators to dynamically generate UI * To support the new `make keyboard:keymap:qmk` target, which bundles this metadata up with the firmware to allow QMK Toolbox to be smarter. Configurator authors can see the [QMK Compiler](https://docs.api.qmk.fm/using-the-api) docs for more information on using the JSON API.