Trailing spaces from a spreadsheet
Invisible whitespace becomes part of the encoded data and changes the scan result.
Review the normalized and original values, then trim only according to an explicit import rule.
Code 128 barcode generator
Generate Code 128 for flexible internal identifiers
Code 128 is useful when an internal SKU, asset ID or logistics value includes more than fixed-length digits. BatchLabel validates the supported character set, selects an efficient encoding strategy and keeps the encoded value separate from the label text around it.
01
Valid inputBarcode data
Identifier notice. BatchLabel generates the graphical representation of the number provided. It does not sell or assign official GTIN, EAN or UPC codes.
A practical workflow
How to use it
- 01
Enter the exact identifier
Preserve case and punctuation expected by the receiving system.
- 02
Check unsupported controls
Remove hidden line breaks or control characters unless the configured workflow explicitly supports them.
- 03
Choose height and module scale
Balance label space with reader tolerance, then test the printed output.
Avoid rework
Common errors and precise fixes
Confusing Code 128 with GS1-128
GS1-128 uses Code 128 symbols with an FNC1 and standardized Application Identifier semantics.
Use the GS1-128 tool when the data must follow GS1 element-string rules.
Know the limits
Not every control character or binary sequence is accepted by the initial text-oriented input.
Code 128 flexibility does not make an internal ID globally unique.
Questions, answered
Before you continue
Does Code 128 support lowercase letters?
Yes, ordinary Code 128 can encode upper- and lowercase characters in its supported ASCII range. The scan result preserves the encoded case.
Do I need to supply a Code 128 checksum?
No. The symbol checksum is generated as part of rendering and is not normally included in the text value you enter.