Free part number diagram maker
Break a part number, model code or SKU into its parts, say what each part means, and get a diagram with the leader lines drawn for you. It runs entirely in your browser and exports SVG, PNG and JSON.
Open the tool Desktop browser, no sign-up
What it does
- Select a range of characters in the part number, and a card appears for writing what that range means.
- Fill in the heading and the options, and the diagram assembles itself with leader lines.
- Notes go inside a description; the diagram shows a superscript number and lists them underneath.
- It checks for leader lines that cross and fields left empty, and points at what to fix.
- Export SVG, PNG or JSON. The SVG carries its fonts, so the letters do not change on another machine.
The bundled fonts cover Japanese and the Latin alphabet, accented letters included. Korean, Cyrillic and Thai have no glyphs here, and the tool says so on the spot if you type one. The editor's own labels are still in Japanese; the guide names every button in English.
Who it is for
- Anyone writing the product page or catalog that explains a numbering scheme
- Anyone putting "how to read the part number" into a spec sheet or a manual
- Shops selling parts and equipment, explaining what a code means to a buyer
- Engineers and sales staff sharing a numbering rule inside a company
What it does not do
- Invent part numbers for you
- Manage a BOM, stock or a product master
- Guess what your part number means — you write the meanings
Where what you type goes
Nowhere. Everything happens in your browser, and what you make stays there. To move a diagram to another machine, export the JSON and carry the file.
Examples
Three fictional part numbers, each with an explanation of how it was put together. Import the JSON and edit your way from there — usually the quickest start.
- Taking a unit's part number apart — Four items: series, width, mounting and color. A straightforward first diagram.
- A part number with a lot of options — Four items: sensing method, range, output and connection. One item carries three options.
- A longer part number, with five items — Five items: kind, length, connector, jacket color and shielding. A part number with many segments.