Free Barcode Generator Online — CODE128, EAN-13 & UPC-A
Create free barcodes for CODE128, CODE39, EAN-13, EAN-8, UPC-A, and ITF-14. Download PNG or copy Base64 — no signup, private browser-only.
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Quick answer
To make a barcode for free, choose the format in the KaviForge Barcode Generator (CODE128, CODE39, EAN-13, EAN-8, UPC-A, or ITF-14), enter the value, and generate. Download a PNG for labels or copy the Base64 string. EAN and UPC check digits are validated, and everything runs in your browser.
Generate free barcodes online for inventory, shipping labels, retail products, and internal tracking. Choose from CODE128, CODE39, EAN-13, EAN-8, UPC-A, ITF-14, MSI, Pharmacode, and Codabar—then download a PNG or copy the Base64 image string.
All barcode creation happens in your browser. No uploads, no account required. Perfect for warehouses, small shops, and developers who need embeddable barcode images.
How to Create a Barcode Online for Free
- 1Select a barcode format (CODE128 is a safe default for alphanumeric values).
- 2Enter the value to encode, or click Load Sample for a valid example of that format.
- 3Adjust bar width, height, colors, and whether to show human-readable text.
- 4Click Generate Barcode. Results appear as: 1) Image, 2) Encoded value, 3) Base64.
- 5Download the PNG or copy Base64 / data URL for labels and web pages.
Features
Multiple Formats
CODE128, CODE39, EAN-13, EAN-8, UPC-A, ITF-14, MSI, Pharmacode, and Codabar.
PNG Download
Export a clean PNG barcode image ready for labels, documents, and print.
Base64 Output
Copy Base64 or data URL to embed barcodes in HTML, CSS, emails, or APIs.
Custom Styling
Control bar width, height, colors, and optional text under the bars.
Live Preview
See the barcode update as you type, with clear errors for invalid format values.
Sample Values
Load format-specific samples so you can test quickly without memorizing rules.
Retail Ready
Generate EAN-13 and UPC-A codes commonly used on consumer products.
Private & Free
Processing stays on your device. Free to use with no watermark on downloads.
When to Use the Barcode Generator
Product labels
Generate EAN-13 or UPC-A barcodes for retail packaging and online store listings.
Inventory and shipping
Use CODE128 or ITF-14 for warehouse bins, cartons, and internal asset tags.
Developer testing
Create barcode images as PNG or Base64 to test scanners, POS systems, or label templates.
About Barcodes
Barcodes encode data as a pattern of bars and spaces that scanners can read quickly. Different symbologies suit different industries: EAN and UPC for retail, CODE128 for logistics, CODE39 for older industrial systems.
This tool uses client-side rendering to draw barcodes on a canvas, export them as PNG, and expose Base64 so you can embed images without uploading files to a CDN.
Always validate printed barcodes with a physical scanner before bulk printing, especially for check-digit formats like EAN-13 and UPC-A.
Barcode Generator FAQs
Is this barcode generator free?
Yes. Generate barcodes online for free. All processing runs in your browser so your product codes and values are never uploaded.
Which barcode formats are supported?
Supported formats include CODE128, CODE39, EAN-13, EAN-8, UPC-A, ITF-14, MSI, Pharmacode, and Codabar.
Can I download the barcode as an image?
Yes. Download a PNG image, copy the data URL, or copy the Base64 string to embed the barcode in documents, labels, or websites.
What is Base64 barcode output?
Base64 is a text representation of the PNG barcode image. Embed it with data:image/png;base64,... without hosting a separate file.
Which format should I use for retail products?
Retail products typically use EAN-13 (international) or UPC-A (North America). CODE128 is ideal for internal inventory, shipping, and alphanumeric codes.
Why does my barcode show an error?
Each format has rules—for example EAN-13 needs the correct number of digits. Use Load Sample for a valid example, or switch to CODE128 for flexible alphanumeric data.
Can I use these barcodes commercially?
The tool itself is free. For official retail GTINs you still need properly assigned numbers from GS1 or your country’s issuing agency.
Do barcodes work the same as QR codes?
No. Traditional barcodes are typically 1D and store shorter values for scanners. QR codes are 2D and can store longer text, URLs, and structured data. Use our QR Code Generator for those use cases.
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