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Barcode Generator

Generate CODE39 and EAN-13 barcodes as SVG output.

Last validated: Pending

Barcode Generator creates linear barcode SVG output for CODE39 and EAN-13 formats on one page. It is useful when preparing inventory labels, internal part numbers, packaging drafts, or scanner test data. The tool validates input according to the selected standard and automatically computes the EAN-13 check digit when you provide 12 digits. You can adjust module width and bar height to match print/readability constraints. This gives you deterministic, portable SVG barcodes without external services.

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Input Pattern

Enter values in the left panel, keep units explicit, run the calculation, then copy or share the result. Invalid fields are highlighted immediately.

Barcode Generator

Generate scan-ready SVG barcodes in CODE39 or EAN-13 format.

Output

Normalized: TOOLPATCH-123

Encoded: *TOOLPATCH-123*

How to use this tool

Select barcode format (CODE39 or EAN13).
Enter content using the allowed character set for that format.
Set module width and bar height for your print or display target.
Generate the barcode and verify the normalized output shown below the SVG.
Test with your target scanner before production use.

Worked Example

Auto-generated from the tool's current default or entered inputs.

Example Inputs

Format: CODE39
Content: TOOLPATCH-123
Normalized content: TOOLPATCH-123
Encoded text: *TOOLPATCH-123*
Module width: 2
Bar height: 120

Expected Outputs

Module width: 2
Bar height: 120

Interpretation

Module width is 2. Use this as a decision input, not as a standalone conclusion.
Bar height is 120. Use this as a decision input, not as a standalone conclusion.
Cross-check the result against one alternate input set to validate sensitivity.

Scenario Compare (A vs B)

Use this to compare two input sets and quantify change in key outputs.

Scenario A

Format

Content

Normalized content

Encoded text

Module width

Bar height

Scenario B

Format

Content

Normalized content

Encoded text

Module width

Bar height

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