What tool do you want?
I would like to have a tool to generate a barcode.

Describe the solution you'd like
I would imagine a web page to generate a barcode from a piece of data, the simplest case being ASCII text encoded into a Code 128 barcode.
Further additions could be the ability to generate different barcodes depending on the desired norm (https://www.tec-it.com/en/support/knowbase/barcode-overview/linear/Default.aspx), and potentially the ability to access a camera to read and decode barcodes.

Is there example of this tool in the wild?
Webpages:

• https://barcode.tec-it.com/en/Code128
• https://www.cognex.com/resources/interactive-tools/free-barcode-generator
• https://www.barcode-generator.org/

npm packages:

• https://www.npmjs.com/package/barcode
• https://www.npmjs.com/package/jsbarcode