The Softmatic Barcode add-on for Google Sheets™ supports all common retail, warehousing and 2D barcode symbologies. All barcodes are guaranteed to conform to the respective GS1 and ISO standards. 

The add-on supports three kinds of barcode creation from the data in your sheet:

1. Insert barcodes directly into cells as a 300dpi PNG image. Useful if the sheet is to be printed or converted to a PDF.

2. Insert barcodes as above but as a weblink (URL). Useful for data merge / mail merge and similar applications.

3. Download barcodes as PNG, PDF or SVG directly to your computer. Useful for importing the codes into other apps, like InDesign or Illustrator.

Barcodes can be widely customized with options for size, readable text and margin. The add-on performs all required data formatting and check digit calculation in the background - no macros or programming required.

Narrated walkthrough: https://youtu.be/ot1bszRYwks
Manual: https://softmatic.com/manual/sba/index.html

The FREE plan allows creation of up to one thousand barcodes free of charge. 

Plans: https://softmatic.com/addon.html