Developer Tools

Code 39 Barcode Generator

Generate Code 39 barcode SVG previews from uppercase letters, numbers, and common label characters directly in your browser.

Barcode generation runs locally in your browser. No upload, storage, account, or third-party API is used.

Text or Code 39 value

Code 39 supports A-Z, 0-9, space, dash, dot, dollar, slash, plus, and percent. Input is uppercased locally.

Status

Ready

Normalized value

CLEARUTILS-123

Barcode preview

Generated Code 39 Barcode Generator preview

SVG output

<svg xmlns="http://www.w3.org/2000/svg" role="img" aria-label="Barcode for CLEARUTILS-123" viewBox="0 0 434 132"><rect width="100%" height="100%" fill="white"/><g fill="black"><rect x="10" y="10" width="2" height="92" /><rect x="16" y="10" width="2" height="92" /><rect x="20" y="10" width="2" height="92" /><rect x="22" y="10" width="2" height="92" /><rect x="26" y="10" width="2" height="92" /><rect x="28" y="10" width="2" height="92" /><rect x="32" y="10" width="2" height="92" /><rect x="36" y="10" width="2" height="92" /><rect x="38" y="10" width="2" height="92" /><rect x="42" y="10" width="2" height="92" /><rect x="44" y="10" width="2" height="92" /><rect x="48" y="10" width="2" height="92" /><rect x="54" y="10" width="2" height="92" /><rect x="58" y="10" width="2" height="92" /><rect x="62" y="10" width="2" height="92" /><rect x="66" y="10" width="2" height="92" /><rect x="68" y="10" width="2" height="92" /><rect x="72" y="10" width="2" height="92" /><rect x="76" y="10" width="2" height="92" /><rect x="82" y="10" width="2" height="92" /><rect x="84" y="10" width="2" height="92" /><rect x="88" y="10" width="2" height="92" /><rect x="90" y="10" width="2" height="92" /><rect x="94" y="10" width="2" height="92" /><rect x="98" y="10" width="2" height="92" /><rect x="100" y="10" width="2" height="92" /><rect x="106" y="10" width="2" height="92" /><rect x="110" y="10" width="2" height="92" /><rect x="114" y="10" width="2" height="92" /><rect x="116" y="10" width="2" height="92" /><rect x="120" y="10" width="2" height="92" /><rect x="124" y="10" width="2" height="92" /><rect x="130" y="10" width="2" height="92" /><rect x="134" y="10" width="2" height="92" /><rect x="136" y="10" width="2" height="92" /><rect x="140" y="10" width="2" height="92" /><rect x="142" y="10" width="2" height="92" /><rect x="146" y="10" width="2" height="92" /><rect x="150" y="10" width="2" height="92" /><rect x="154" y="10" width="2" height="92" /><rect x="156" y="10" width="2" height="92" /><rect x="162" y="10" width="2" height="92" /><rect x="166" y="10" width="2" height="92" /><rect x="168" y="10" width="2" height="92" /><rect x="174" y="10" width="2" height="92" /><rect x="178" y="10" width="2" height="92" /><rect x="182" y="10" width="2" height="92" /><rect x="186" y="10" width="2" height="92" /><rect x="188" y="10" width="2" height="92" /><rect x="192" y="10" width="2" height="92" /><rect x="196" y="10" width="2" height="92" /><rect x="200" y="10" width="2" height="92" /><rect x="202" y="10" width="2" height="92" /><rect x="206" y="10" width="2" height="92" /><rect x="208" y="10" width="2" height="92" /><rect x="214" y="10" width="2" height="92" /><rect x="218" y="10" width="2" height="92" /><rect x="222" y="10" width="2" height="92" /><rect x="224" y="10" width="2" height="92" /><rect x="228" y="10" width="2" height="92" /><rect x="234" y="10" width="2" height="92" /><rect x="236" y="10" width="2" height="92" /><rect x="240" y="10" width="2" height="92" /><rect x="244" y="10" width="2" height="92" /><rect x="248" y="10" width="2" height="92" /><rect x="250" y="10" width="2" height="92" /><rect x="254" y="10" width="2" height="92" /><rect x="258" y="10" width="2" height="92" /><rect x="264" y="10" width="2" height="92" /><rect x="266" y="10" width="2" height="92" /><rect x="270" y="10" width="2" height="92" /><rect x="274" y="10" width="2" height="92" /><rect x="276" y="10" width="2" height="92" /><rect x="280" y="10" width="2" height="92" /><rect x="284" y="10" width="2" height="92" /><rect x="286" y="10" width="2" height="92" /><rect x="292" y="10" width="2" height="92" /><rect x="296" y="10" width="2" height="92" /><rect x="302" y="10" width="2" height="92" /><rect x="306" y="10" width="2" height="92" /><rect x="310" y="10" width="2" height="92" /><rect x="312" y="10" width="2" height="92" /><rect x="316" y="10" width="2" height="92" /><rect x="318" y="10" width="2" height="92" /><rect x="322" y="10" width="2" height="92" /><rect x="324" y="10" width="2" height="92" /><rect x="328" y="10" width="2" height="92" /><rect x="334" y="10" width="2" height="92" /><rect x="338" y="10" width="2" height="92" /><rect x="342" y="10" width="2" height="92" /><rect x="344" y="10" width="2" height="92" /><rect x="348" y="10" width="2" height="92" /><rect x="352" y="10" width="2" height="92" /><rect x="354" y="10" width="2" height="92" /><rect x="360" y="10" width="2" height="92" /><rect x="364" y="10" width="2" height="92" /><rect x="368" y="10" width="2" height="92" /><rect x="370" y="10" width="2" height="92" /><rect x="374" y="10" width="2" height="92" /><rect x="376" y="10" width="2" height="92" /><rect x="380" y="10" width="2" height="92" /><rect x="382" y="10" width="2" height="92" /><rect x="388" y="10" width="2" height="92" /><rect x="392" y="10" width="2" height="92" /><rect x="396" y="10" width="2" height="92" /><rect x="400" y="10" width="2" height="92" /><rect x="406" y="10" width="2" height="92" /><rect x="410" y="10" width="2" height="92" /><rect x="412" y="10" width="2" height="92" /><rect x="416" y="10" width="2" height="92" /><rect x="418" y="10" width="2" height="92" /><rect x="422" y="10" width="2" height="92" /></g><text x="217" y="124" text-anchor="middle" font-family="monospace" font-size="14" fill="black">CLEARUTILS-123</text></svg>

Code 39 barcode workflow tips

Use Code 39 when a simple alphanumeric barcode is enough for mock labels, inventory examples, internal docs, and QA fixtures.

Prepare readable IDs

Use Slug Generator or Random String Generator before generating labels from sample names.

Need numeric retail codes?

Use EAN-13 Barcode Generator or UPC-A Barcode Generator for checksum-based product-code examples.

Document outputs

Copy SVG output into docs, fixtures, or mockups. Verify final production labels with the scanner and print system you actually use.

What this tool does

The Code 39 Barcode Generator converts compatible text into a browser-local SVG barcode with start and stop markers. Use it for sample labels, test fixtures, warehouse docs, and offline mockups where Code 39 is expected.

Common use cases

Generate a browser-local Code 39 barcode SVG from sample IDs, labels, and alphanumeric fixture values without uploading or storing input.

Use Code 39 Barcode Generator when you are working with copied API payloads, logs, encoded values, config snippets, identifiers, or debugging data and need a quick browser-local check before pasting the result into docs, tickets, tests, or another developer tool.

How to use it

Enter letters, numbers, spaces, or the Code 39 symbols dash, dot, dollar, slash, plus, and percent.
Review the normalized uppercase value and barcode preview generated locally in your browser.
Copy the SVG markup or download the SVG for test labels, documentation, or design handoffs.

Example workflow

Copy a small payload or encoded value from an API response, request URL, log line, or config file. Run the focused check here, confirm the output is readable, then continue with related developer data tools such as validation, formatting, decoding, timestamp conversion, or CSV/JSON conversion.

Privacy note

Barcode generation runs locally in your browser. ClearUtils does not upload, store, fetch, or log barcode input.

FAQ

What characters can Code 39 encode?

This generator supports uppercase A-Z, digits 0-9, spaces, dash, dot, dollar, slash, plus, and percent, with start and stop markers added automatically.

Does this barcode generator upload my input?

No. Code 39 barcode generation runs locally in your browser and does not upload, store, fetch, or log input.

Can I use the SVG for production labels?

Use the SVG as a convenient preview or starting point, then verify final labels with the scanner, printer, size, and barcode standards required by your workflow.

Explore more tools

Browse the Developer Tools hub or continue with the Developer Data Toolkit when this task is part of a larger workflow.