Freelance Invoice Generator
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Invoice Barcode Generator
A Code 128 or Code 39 barcode of the invoice number, for scanning and filing.
Quick Tool Overview
The Invoice Barcode Generator encodes an invoice number as Code 128 or Code 39 with the number printed underneath, checks it can be encoded, and warns when it would be too wide for an invoice header.
- What it does
- Makes a barcode of an invoice number
- You give it
- The invoice number and a symbology
- You get back
- A scannable barcode as SVG or PNG
- Best for
- Accounts payable scanning and document archives
About the Invoice Barcode Generator
A barcode on an invoice is not for the customer — it is for whoever processes it. Accounts payable departments that scan paper invoices, document archives that index by number, and warehouses that match an invoice to a delivery all read a barcode faster and more reliably than a person can type an invoice number.
This generates the two symbologies that suit invoice numbers. Code 128, which encodes letters, digits and punctuation densely and is what most modern scanners expect. And Code 39, which is wider but readable by older scanners and is still common in document management systems. The human-readable number prints underneath.
It checks that the number can be encoded in the chosen symbology and warns when a barcode would be too wide to fit an invoice header. Download as SVG for print or PNG for a document. Nothing is uploaded.
Key features of the Invoice Barcode Generator
Code 128
Dense, and read by virtually every modern scanner.
Code 39
For older document management systems.
Human-readable text
The number printed under the bars.
Width warning
Before it is too wide to fit where it is going.
SVG and PNG
Crisp at any print size.
How to use the Invoice Barcode Generator
-
1
Enter the invoice number
Letters, digits and dashes all encode in Code 128.
-
2
Pick the symbology
Code 128 for modern scanners, Code 39 for older document systems.
-
3
Set the size
Height and width to fit where it will be printed.
-
4
Download
SVG for print, PNG for a document.
Frequently asked questions
Code 128. It encodes the full range of characters invoice numbers use, it is compact, and virtually every modern scanner reads it. Use Code 39 only if an older system requires it.
Not in its standard form — it encodes uppercase letters, digits and a handful of symbols. Lowercase is converted to uppercase, which is usually fine for invoice numbers.
Top right near the invoice number, or in a margin, with a quiet zone of white space on both sides. A barcode crammed against other content will not scan.
For a payment, yes. For indexing and filing, a linear barcode is simpler, faster to scan with a handheld reader and supported by more document systems.
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