Barcode Generator

Key takeaways

• Runs in your browser (dynamic import / local processing)
• File bodies are not uploaded to our servers for these tools
• Size and page limits protect tab performance
• Quality claims stay honest for lossy converters

What is a barcode generator?

It encodes digits or text into a 1D linear barcode image for retail scanners and inventory labels.

Choose a symbology that matches your scanner. Invalid digit lengths for EAN/UPC will error clearly.

Features

• 1D symbologies

  Code128, EAN, UPC, and Code39.

• PNG download

  Ready for labels and docs.

• Local

  No upload of values.

• Clear errors

  Invalid payloads fail loudly.

How it works

1. 1

   Enter value

   Type the text or digits to encode.

2. 2

   Pick symbology

   Choose Code128, EAN, UPC, or Code39.

3. 3

   Generate & download

   Save the PNG locally.

Example walkthroughs

• SKU Code128

  Encodes an alphanumeric stock code.

  SKU-10045

• EAN-13 sample

  Retail barcode with check digit (verify before print).

  5901234123457

Use cases

• Inventory labels

  Print SKU barcodes.

• Retail packaging

  EAN/UPC digits for scanners.

Code snippets

• Process locally

  js

  Matches the privacy model for file utilities on this site.

  // Files stay in your tab - processors run via dynamic import / worker path
  // No multipart upload of PDF bodies for these tools.

Common errors

• File too large

  Cause: PDF/image exceeds the per-file byte limit.

  Fix: Split the document or compress scans before uploading to the workspace.

• Encrypted / unreadable PDF

  Cause: The file is password-protected or severely corrupted.

  Fix: Remove the password locally first, or try Repair PDF for mild structural issues.

About Barcode Generator

Barcode Generator builds scannable 1D PNG barcodes for labels, inventory SKUs, and retail packaging without a design tool. Symbologies include Code128, EAN-13, UPC, and Code39 so you can match common warehouse and point-of-sale scanners from one workspace.

Generation runs locally with bwip-js in your browser so product codes and internal SKUs never need to hit a hosted generator. Download the PNG and drop it into docs, label software, or packing slips without leaving your machine.

Some symbologies require exact digit lengths and check digits. The tool surfaces library errors when values are invalid rather than silently emitting unscannable images that fail on the warehouse floor later.

Best practice: verify with your physical scanner before printing a large batch. Use Code128 for general alphanumeric SKUs and EAN/UPC for retail digits. For square QR marketing codes, use the dedicated QR Code Generator instead of this page.

Barcode Generator on Tools by RS targets the “barcode-generator” search intent with private, browser-first processing, explicit size and page limits, downloadable results, reciprocal related-tool links, and documentation that states what the converter can and cannot do so humans and assistants set accurate expectations before trusting the output in production workflows.

Prefer this workspace when you need Barcode Generator without uploading documents to a third-party converter, and keep source files archived whenever the output is lossy or heuristic.

Frequently asked questions

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