This is a free web-based online barcode generator, designed for users to easily generate Code 128 (Code 128A, Code 128B, Code 128C) linear barcodes in Jpeg, Gif and Png image formats. Various parameter settings are available such as barcode size, rotation, resolution, image formats, text font etc. For more settings or barcode integrations, please navigate to other KeepAutomation barcode solutions, including:

Watch a quick video: how to get a free keycode and apply it?

Code 128 Introduction

Code 128 barcode is a high-density linear barcode symbology, which encodes digits, text, control characters, and full ASCII 128 characters.

Code 128, also known as ANSI/AIM 128, ANSI/AIM Code 128, USS Code 128, Uniform Symbology Specification Code 128, is a very capable linear barcode of excellent density, high reliability.

Using KeepAutomation.com online barcode generator, you could easily create ISO standard Code 128 barcode images in web browser or url network.

Besides Code 128 generation in web browser, Online barcode generator also supports Code 39 generator, EAN-13 generator, UPC-A generator, Data Matrix generator, and QR Code online generator at free.

Code 128 Characters Encoding

Supported Code 128 characters

Code 128 barcode supports the following characters

• All 128 Full ASCII characters
• Extended ASCII characters (ISO/IEC 8859-1, Latin Alphabet 1)
• 4 non-data function characters (FNC1, FNC2, FNC3, FNC4)
• 4 code set selection characters
• 3 Start characters
• 1 Stop character

Using Online Code 128 barcode generator, you need provide ASCII and extended ASCII characters only. All function characters and code set chars, start and stop chars will be inserted by Code 128 generator software automatically.

Code 128 Code Sets

Code 128 barcode has three unique data character code sets

• Code Sets A
• Code Sets B
• Code Sets C

Each code set includes a subset of the full ASCII character set together with various auxiliary characters.

You do not need to specify your Code 128 encoding data code set, Online Code 128 Generator tool will analyze your encoding data, and choose the right Code set for you.

Code 128 data length

The Code 128 specification does not specify the maximum number of characters in a single barcode image.

However some Code 128 application standards will provide the limits. GS1-128 has limits the maximum length of Code 128 data to 48 characters.

When you generate Code 128 in web browser, you need check your applied application requirements.

Code 128 Check Sum Character

Code 128 barcode contains a compulsory check digit (checksum) character, which is based on module 103 (mod 103).

The Code 128 check character will not be shown in the human readable interpretation (barcode text), and it will not be returned by the barcode decoder also.

Online Code 128 generator will automatically calculate the Code 128 check digit and encode it in the end of the Code 128 data message for you.

If you find KA.Online Code 128 Barcode Generator useful,
Please embed the code below in your website or blog to link to the free online barcode creator!