NUMBER RANGE → BARCODES · TOOL 05
Sequential Barcode Generator
Create numbered asset and inventory labels without a spreadsheet.
Set a prefix, starting number, quantity, and zero-padding to generate a clean sequence of Code 128 or Code 39 labels.
✓ Up to 500 labels✓ Browser-only processing✓ A4, Letter & 4×6 output
01
DEFINE THE RANGE
Build the first and last value
BATCH READY
Preview
Sequence generation and export happen entirely in this tab.
A continuous range of scannable barcodes
Preview the range before export, then download a PNG ZIP or an A4/Letter PDF with 2–5 labels per row.
- A range larger than 500 labels
- Code 39 prefixes containing lowercase letters
- Too little physical width for long identifiers
HOW IT WORKS
From source data to finished output
Define the range
Choose the prefix, first number, quantity, and number of padded digits.
Check the endpoints
The tool shows the first and last value before generating anything.
Export and test
Download the full batch and scan a printed first, middle, and last label.
COMMON USES
Made for jobs that repeat.
Focused generation and print controls, without a visual designer or account system.
- ✓Asset tags
- ✓Inventory bins
- ✓Tool cribs
- ✓Library items
- ✓Sample tracking
- ✓Sequential tickets
GOOD TO KNOW
Questions before you print
What does zero-padding do?+
It keeps numbers the same width: padding 4 turns 7 into 0007.
Can I add a suffix?+
Yes. Prefix and suffix are both included in the encoded value.
Which barcode format should I choose?+
Use Code 128 unless an existing system specifically requires Code 39.