# JSON File Definition Applicable on: [SVG Generator](https://docs.midilli.tech/books/midilli-svg-generator "MIDILLI SVG Generator Manual"), [G-Code Generator](https://docs.midilli.tech/books/midilli-g-code-generator "MIDILLI G-Code Generator"), [STL Generator](https://docs.midilli.tech/books/midilli-stl-generator-for-3d-printers "MIDILLI STL Generator for 3D Printers") **MIDILLI Tools** require a JSON file to operate. An example file is provided in the tool manuals, which you can modify to meet your specific needs. Below is a detailed explanation of the mandatory (indicated in bold) and optional properties and parameters. The text enclosed in square brackets \[ \] can be replaced if it begins with *unique*; otherwise, you should choose from the available options (e.g., \[uniquePartName\]\_\[Side\]). To create your own JSON file, you can also use our online [Visual Box Designer](https://midilli.tech/visual-box-designer/) or textual [JSON Creator](https://midilli.tech/midilli-tools-json-creator/). This JSON is a simplified version of the full configuration we use internally. It allows you to quickly customize your design without diving into complex data structures, offering a streamlined approach to controlling your project.
SectionPropertyDescriptionParameterParameter descriptionUnitMultiplicity
**Generic** Specify generic properties  –1
**Generic****width**The width of the box\* (on x-axis).– cm1
**Generic****length**The length of the box\* (on y-axis).– cm1
**Generic**material\_thicknessThe thickness of the material.– mm0-1
**Generic**board\_height\_3dThe height of the box\* (on z-axis).– mm0-1
**Generic**outer\_sizingWhether to include material thickness in the calculations.– bool (true or false)0-1
**Generic**finger\_jointWhether to add finger (box) joints to the 4 wall corners so panels can be assembled without glue. Front/Back panels get protruding fingers, Left/Right panels get the matching slots.– bool (true or false)0-1
**Generic**finger\_sizeThe width of a single finger. If not set, defaults to the material thickness. A warning is printed if it is smaller than the material thickness.– mm0-1
**Generic**finger\_countNumber of fingers on each wall edge. If not set (or 0), it is calculated automatically from the edge length and finger size.– count0-1
**Generic**finger\_clearanceExtra clearance added to the slots so the fingers fit without sticking. Applied only to the slots that receive a finger (Left/Right); Front/Back notches stay at finger\_size to keep the edge even. Default: 0.– mm0-1
**\[uniquePartName\]\_\[Side\]** Initiate creation of \[Side\] side of the part \[uniquePartName\]. Side can be: Top, Bottom, Left, Right, Back, Front.  –1-6
\[uniquePartName\]\_\[Side\]\[uniqueComponentName\]A unique component name to create a hole or rectangular shape on the \[uniquePartName\] \[Side\].  –0-\*
\[uniquePartName\]\_\[Side\]\[uniqueComponentName\]–**location\_x**X position of center of the \[uniqueComponentName\] relative to the \[uniquePartName\] \[Side\].cm1
\[uniquePartName\]\_\[Side\]\[uniqueComponentName\]–**location\_y**X position of center of the \[uniqueComponentName\] relative to the \[uniquePartName\] \[Side\].cm1
\[uniquePartName\]\_\[Side\]\[uniqueComponentName\]–**drill\_diameter**The diameter of the hole to open. Has priority over *drill\_width* and *drill\_length*. Set to 0 only to display text.cm1
\[uniquePartName\]\_\[Side\]\[uniqueComponentName\]–**drill\_width**The drill width of the rectangle to cut out. If *drill\_diameter* is found, *drill\_width* is ignored. Mandatory if *drill\_diameter* is not used. Set to 0 only to display text.cm1
\[uniquePartName\]\_\[Side\]\[uniqueComponentName\]–**drill\_length**The drill length (y-axis) of the rectangle to cut out. If *drill\_diameter* is found, *drill\_length* is ignored. Mandatory if *drill\_diameter* is not used. Set to 0 only to display text.cm1
\[uniquePartName\]\_\[Side\]\[uniqueComponentName\]–rotationClockwise rotation of the component (0-359). If *call\_name* is set, text is also rotated around the component.degree0-1
\[uniquePartName\]\_\[Side\]\[uniqueComponentName\]–call\_nameText to assign to the component. Placed using *visible\_length* and *visible\_width* as margin. See *rotation* for more info.text0-1
\[uniquePartName\]\_\[Side\]\[uniqueComponentName\]–silk\_screen\_font\_sizeCustom font size for the text in pixels (px).px0-1
\[uniquePartName\]\_\[Side\]\[uniqueComponentName\]–visible\_diameterIf a recess is desired in the shape of a circle instead of a rectangle, this value must be specified. If this value is not found then *visible length* and *visible\_width* values are used.cm0-1
\[uniquePartName\]\_\[Side\]\[uniqueComponentName\]–visible\_lengthIf the visible area of the component is not the same as the drill size, *call\_name* uses this parameter to adjust the font margins keep the text above the visible section. If not found, *drill\_length* is used. This value is also used for the recess length of the component.cm0-1
\[uniquePartName\]\_\[Side\]\[uniqueComponentName\]–visible\_widthIf the visible area of the component is not the same as the drill size, *call\_name* uses this parameter to keep the text horizontally centered with the component. If not found *drill\_width* is used. This value is also used for the recess width of the component.cm0-1
*\* These values may change depending on outer or inner-sizing choice. **Bold font** represents a mandatory property.*
The text *\[uniquePartName\]* can be replaced with any name, brackets should be removed, e.g, MyPart However, *\[Side\]* should be replaced with one of *Top, Bottom, Left, Right, Back, Front*. Note: each side may appear only once for a *\[uniquePartName\]* part, e.g., *MyPart\_Top* or *MyPart\_Left*. If any of the sides are missing it will not be created. *Note: Use dot (.) if working with decimal numbers to separate the integer part.*