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Hazuu Tools

Barcode Generator

Generate high-quality barcodes in 16 different formats. Customize appearance and export as PNG — all processed locally in your browser.

Supports all 128 ASCII characters — most versatile format.

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2px
100px

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20px
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About Barcode Generator

A barcode is a machine-readable representation of data encoded in a series of parallel bars and spaces. Unlike QR codes — which store data in a two-dimensional grid of dots — traditional linear barcodes encode information in one dimension and are read by laser scanners and imaging devices used throughout retail, logistics, healthcare, and libraries. This generator supports all 16 of the most widely used linear formats: CODE128, EAN-13, EAN-8, UPC-A, UPC-E, CODE39, ITF-14, ITF, MSI, EAN-5, EAN-2, Pharmacode, and Codabar.

Use this tool when you need a scannable barcode image for physical products, printed labels, shipping containers, library cards, or internal inventory tracking. Type your text or numeric data, pick the correct format for your industry (EAN-13 for international retail, ITF-14 for shipping cartons, CODE128 for general alphanumeric data), and adjust the bar width, height, colors, and label font until the output matches your print specifications. You can then download a high-resolution 2x PNG or copy the image directly to your clipboard.

Every barcode is generated entirely in your browser using the JsBarcode library. No data is ever uploaded to a server, logged, or shared — so internal product SKUs, warehouse identifiers, and pharmaceutical lot numbers stay completely private. There are no usage limits, no watermarks, and no account required.

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Key Features

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16 industry-standard formats

Generate CODE128, EAN-13, EAN-8, UPC-A, UPC-E, CODE39, ITF-14, ITF, MSI, EAN-5, EAN-2, Pharmacode, and Codabar — covering retail, logistics, pharmaceutical, and library applications.

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Real-time live preview

The barcode re-renders instantly as you change text, format, or any appearance setting, so you can judge scannability and sizing before downloading.

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Full color control

Set any hex color for both the bar lines and the background using color pickers or direct hex input. Dark-on-light produces the most reliable scanner reads; light-on-dark is useful for branded materials.

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Adjustable dimensions

Set bar width (1-4 px) and height (50-200 px) with sliders. Taller barcodes tolerate more label damage; narrower bars fit more data in a smaller footprint.

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Configurable text label

Toggle the human-readable text beneath the bars on or off, and control its font family (monospace, sans-serif, or serif), size, alignment, and margin to match your label template.

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High-resolution PNG export

Downloads are rendered at 2x resolution on an HTML canvas, producing a crisp image ready for printing on product labels, packaging, or shelf tags without blurring.

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How to Use

01

Enter Your Data

Type the text or number you want to encode into the input field and choose the barcode format from the dropdown.

02

Customize Appearance

Adjust bar width, height, colors, and text options to match your requirements.

03

Export Your Barcode

Click "Download" to save as a PNG image, or "Copy" to copy the barcode to your clipboard.

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Example

A product SKU encoded in CODE128 (Auto). Type your text, select the format, and the barcode renders immediately — ready to download as a PNG for printing on a shelf label.

Barcode text / data
SKU-490123-BLU
Generated barcode image
CODE128 barcode encoding "SKU-490123-BLU" — bars and spaces representing each ASCII character, with the human-readable label "SKU-490123-BLU" printed below in monospace at 20 px.
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Common Use Cases

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    Retail product labeling (EAN-13 / UPC-A)

    Consumer goods sold in stores require a GS1-standard EAN-13 or UPC-A barcode on their packaging. Generate a draft barcode with your 12-digit product number to mock up labels before sending artwork to the printer.

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    Warehouse and inventory management

    Internal SKU codes, bin locations, and asset tags do not follow a public numbering standard, making CODE128 the practical choice. Its support for uppercase, lowercase, digits, and punctuation covers virtually any internal identifier.

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    Shipping carton identification (ITF-14)

    Outer shipping cases and pallets use ITF-14 barcodes built on a 14-digit GTIN. Generate ITF-14 barcodes to label cartons for carriers and distribution centers before your GS1 application is approved.

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    Library and healthcare item tracking (Codabar)

    Codabar is the legacy format used for library card numbers, blood bank sample tubes, and photographic lab orders. Generate replacement Codabar labels for items with damaged or missing originals without specialist software.

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    Pharmaceutical packaging (Pharmacode)

    Pharmacode encodes a numeric value between 3 and 131070 in a compact bar pattern used on medication packaging for automated dispensing systems. Use this tool to generate test barcodes for new product line setups and label validation.

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Frequently Asked Questions

What is a Barcode Generator? expand_more
A barcode generator is a tool that converts text, numbers, or other data into a scannable barcode image. The generated barcode can be printed on labels, packaging, or documents and read by barcode scanners or smartphone apps.
Which barcode format should I use? expand_more
CODE128 (Auto) is the most versatile and supports all ASCII characters — use it if you are unsure. For retail products, use EAN-13 (international) or UPC-A (US/Canada). For shipping containers, use ITF-14. For pharmaceutical use, choose Pharmacode. For libraries and blood banks, Codabar is the traditional choice.
Is my data secure? expand_more
Yes. This tool runs entirely in your browser using the JsBarcode library. Your data never leaves your device and is not sent to any external server, ensuring complete privacy for internal SKUs and sensitive identifiers.
Can I customize the barcode colors? expand_more
Yes. You can change both the background color and the barcode line color using the color pickers or by typing a hex value directly. Ensure sufficient contrast between the two colors — at minimum a 3:1 luminance ratio — so laser and imaging scanners can reliably read the barcode.
Why does my barcode show an error? expand_more
Different barcode formats have strict input requirements. EAN-13 requires exactly 12 or 13 digits, UPC-A requires 11 or 12 digits, ITF-14 requires exactly 13 or 14 digits, and Pharmacode requires a number between 3 and 131070. The format description shown below the dropdown tells you exactly what input is valid.
What is the difference between a barcode and a QR code? expand_more
A traditional linear barcode encodes data in one dimension — a row of bars and spaces read by a horizontal laser scan. A QR code is a two-dimensional matrix of dots that encodes far more data (URLs, WiFi credentials, contact cards) and is read by a camera rather than a laser scanner. Use a barcode when you need compatibility with point-of-sale systems, conveyor scanners, and handheld inventory guns; use a QR code when you want a smartphone camera to open a URL or share structured data.
What resolution is the downloaded PNG? expand_more
The PNG is exported at 2x the on-screen pixel dimensions by rendering the SVG barcode onto an HTML canvas at double scale. This produces a sharp, print-ready image that looks crisp at common label sizes such as 1 inch by 0.5 inch at 300 DPI.
Is there a limit on how many barcodes I can generate? expand_more
No. Because generation runs locally in your browser, you can create as many barcodes as you need without rate limits, quotas, or watermarks on any plan.