Retail & e-commerce ready
Generate barcodes suitable for use on packaging, product labels, price tags and online listings for shops and marketplaces.
Generate a Barcode in Seconds
Choose your barcode standard, enter the numeric code and download a ready-to-print SVG or PNG that works with modern scanners and label designs.
For EAN/UPC use digits only. You can enter one digit less than the full length and the check digit will be calculated automatically.
All barcode generation happens locally in your browser using JavaScript. No product data or codes are uploaded to a server.
Barcode preview
Resize the barcode using the width and height options on the left. Ensure good contrast when printing for reliable scanning.
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Benefits of This Barcode Generator
Inventory & logistics
Create internal codes for boxes, pallets and stock locations so teams can scan quickly using handheld scanners or apps.
Clean, vector output
Download barcodes as SVG for sharp printing at any size or PNG for quick insertion into documents and slides.
Standards-based formats
Support for popular standards including EAN-13, EAN-8, UPC-A and Code 128 keeps you aligned with industry requirements.
No installs or logins
Runs entirely inside your browser with HTML, CSS and JavaScript—ideal for cPanel or shared hosting setups.
Private & secure
Your product numbers never leave your device because the generator does not send data to any backend server.
How to Use the Barcode Generator
1
Select a barcode type
Choose EAN-13, EAN-8, UPC-A or Code 128 depending on your retailer or internal system requirements.
2
Enter the barcode value
Type your product or item number. For EAN/UPC formats, use digits only. The tool can auto-calculate the check digit if needed.
3
Adjust size & label
Set the bar width and height and optionally provide a human-readable label to display below the barcode.
4
Generate & preview
Click Generate Barcode to see a live SVG preview. Check that the code looks clear and is large enough for scanning.
5
Download SVG or PNG
Use the download buttons to save the barcode as SVG (for design tools) or PNG (for quick documents and slides).
6
Print & test scan
Place the barcode into your label or packaging design, print it at real size and confirm it can be scanned with your hardware.
Free Online Barcode Generator for UPC, EAN, GTIN, SKU and Inventory Management
Barcodes are used every day in supermarkets, retail stores, warehouses, courier services, libraries, and inventory systems. They help businesses identify products quickly without manually typing product details or serial numbers.
This free online Barcode Generator allows you to create UPC and EAN barcodes instantly from your browser without installing software or creating an account. Whether you need a barcode for a retail product, inventory label, packaging, or internal tracking, you can generate and download barcode images in seconds.
The tool is designed for small businesses, online sellers, shop owners, students, and anyone who needs a simple barcode creation solution without complicated setup.
What Is a Barcode?
A barcode is a machine-readable pattern made of vertical lines and numbers. Barcode scanners read these patterns to identify products or stored information automatically.
Instead of typing long product numbers manually, a scanner can instantly retrieve:
- product IDs
- pricing information
- stock details
- shipping records
- inventory data
Barcodes are commonly used in:
- retail stores
- warehouses
- logistics
- pharmacies
- e-commerce businesses
- supermarkets
- libraries
- billing systems
Generate UPC and EAN Barcodes Online
This online barcode generator supports popular barcode formats including:
- UPC barcode
- EAN barcode
- retail product codes
- inventory labels
- packaging identifiers
You can quickly:
- generate UPC barcode
- create EAN barcode
- download barcode images
- print product labels
- create barcodes for internal use
The barcode image is generated instantly and can be used for both digital and printed purposes.
What Is a UPC Barcode?
UPC stands for Universal Product Code. It is one of the most widely used barcode formats for retail products, especially in the United States and Canada.
A UPC barcode usually contains:
- 12 numeric digits
- product identification information
- manufacturer details
UPC barcodes are commonly seen on:
- grocery products
- packaged goods
- consumer electronics
- retail packaging
Businesses often use a UPC barcode generator when preparing products for:
- supermarkets
- online marketplaces
- retail inventory systems
What Is an EAN Barcode?
EAN stands for European Article Number. It is commonly used internationally and works similarly to UPC codes.
EAN barcodes are widely used in:
- Europe
- India
- global retail systems
- international product distribution
Most EAN codes contain:
- 13 digits
- country and product identification
If you are selling products globally, an EAN barcode generator may be more suitable than UPC depending on marketplace requirements.
UPC to EAN Converter: How UPC and EAN Codes Relate
A lot of people search for an "EAN to UPC converter" or "UPC to EAN converter," assuming these are two unrelated numbering systems that need translating. In most cases they don't — a UPC-A code is simply an EAN-13 code with a leading zero.
- UPC to EAN: add a single "0" to the front of your 12-digit UPC-A number to get a valid 13-digit EAN-13.
- EAN to UPC: if a 13-digit EAN starts with "0", drop that leading zero to get a valid 12-digit UPC-A. EAN codes that don't start with 0 (common outside North America) don't have a UPC-A equivalent.
You don't need a separate conversion tool for this — just enter the 12 or 13-digit number in the matching barcode type above (UPC-A or EAN-13) and the generator will validate and calculate the check digit for you automatically.
What Is a GTIN? (GTIN-12, GTIN-13, GTIN-14)
GTIN (Global Trade Item Number) is the umbrella term GS1 uses for all retail product identifiers. It's less confusing once you see how the pieces map together:
- GTIN-12 = UPC-A (12 digits) — select "UPC-A" in the generator
- GTIN-13 = EAN-13 (13 digits) — select "EAN-13" in the generator
- GTIN-8 = EAN-8 (8 digits) — select "EAN-8" in the generator
- GTIN-14 = used for case/carton-level packaging (ITF-14), not currently supported by this tool
So a "GTIN-12 barcode generator" and a "UPC-A barcode generator" are asking for the exact same thing.
SKU Barcodes and ASIN Barcodes
Generating a Barcode for a SKU
A SKU (Stock Keeping Unit) is an internal code your business creates for its own inventory — it isn't a retail standard like UPC or EAN, so it isn't registered with GS1 and won't be recognized by external retailers or marketplaces.
Because SKUs can contain letters, dashes, and mixed-length text, use the Code 128 barcode type for SKU barcodes rather than UPC or EAN, which only accept plain digits. Code 128 scans just as reliably with any standard barcode scanner and is the format most warehouse and POS systems expect for internal codes.
Converting an ASIN to a Barcode
An ASIN (Amazon Standard Identification Number) is Amazon's internal product ID — it is not a scannable barcode standard on its own, and Amazon does not accept a raw ASIN printed as a barcode for FBA shipments. Depending on what you actually need:
- Selling on Amazon under your own brand: you need a GS1-registered UPC/EAN, generated the normal way, which Amazon then maps internally to an ASIN.
- FBA (Fulfilled by Amazon) labeling: Amazon requires an FNSKU barcode, which Amazon generates for you inside Seller Central — this tool can render the code visually as Code 128 once you have the FNSKU string, but the number itself must come from Amazon.
Why Businesses Use Barcode Generators
Creating barcodes manually is difficult and often requires specialized software. An online barcode generator makes the process much faster and easier.
Businesses use barcode generators for:
- product packaging
- inventory management
- warehouse tracking
- billing systems
- shipping labels
- asset tracking
- retail stores
Small businesses and startups especially benefit from free barcode generation tools because they avoid expensive barcode software.
How to Generate a Barcode Online
Using this barcode generator is simple.
Step 1 – Select Barcode Type
Choose:
- UPC barcode
- EAN barcode
- other supported formats
Step 2 – Enter Product Number
Type the product code or number you want to convert into a barcode.
Step 3 – Generate Barcode
Click the generate button to instantly create the barcode image.
Step 4 – Download or Print
Save the barcode as an image and use it for:
- product labels
- packaging
- inventory sheets
- store systems
Free UPC Barcode Generator
Many users search for:
- UPC barcode generator free
- free UPC barcode generator
- UPC generator free
because paid barcode tools can be expensive for small businesses.
This tool allows you to generate UPC barcodes online without:
- subscriptions
- registration
- watermarks
- software installation
You can create as many barcodes as needed directly from your browser.
Common Uses of Online Barcode Generators
Retail Product Labels
Shops and businesses use UPC and EAN codes for product scanning during billing.
Inventory Tracking
Warehouses and stockrooms use barcode labels to manage products efficiently.
Shipping and Logistics
Courier companies and logistics systems rely heavily on barcode scanning for package tracking.
E-commerce Product Management
Online sellers often create barcodes for:
- product packaging
- inventory systems
- warehouse organization
Asset Management
Companies use barcode labels to track:
- office equipment
- electronics
- tools
- documents
Why Use a Browser-Based Barcode Generator?
Many barcode tools require:
- software downloads
- account registration
- paid licenses
This barcode generator works directly in your browser using modern JavaScript.
That means:
- no installation required
- works on mobile and desktop
- quick barcode generation
- easy downloads
- privacy-friendly processing
You can use it from:
- Android phones
- iPhones
- laptops
- desktop computers
- tablets
Barcode Printing Tips
Use Good Contrast
Black bars on a white background work best.
Avoid Very Small Sizes
Tiny barcodes may become difficult for scanners to read.
Print Clearly
Low-quality printing can blur barcode lines and cause scanning failures.
Test Before Bulk Printing
Always scan a sample barcode before printing hundreds of labels or packages.
Test, Sample, and Placeholder Barcodes
If you need a barcode purely for mockups, design layouts, app testing, or QA purposes — not for an actual product going to retail — you can generate one with any digit sequence of the correct length (12 digits for UPC-A, 13 for EAN-13). The generator will still calculate a valid check digit, so the barcode scans correctly, but it won't correspond to a real registered product.
Important: a barcode that scans successfully is not the same as a barcode that's legally usable on a retail product. UPC and EAN numbers must be licensed from GS1 (or purchased through an authorized reseller) before you sell a product under them. This tool draws the barcode image from whatever number you provide — it doesn't register, license, or validate ownership of that number.
Barcode vs. QR Code
UPC and EAN barcodes are one-dimensional (1D) — a series of vertical lines that store a short numeric string. QR codes are two-dimensional (2D) and can store much more data, including URLs and text. If you're looking to generate a UPC as a QR code, that's not how retail scanning works — POS and retail scanners expect the standard 1D UPC/EAN format shown here, not a QR code.
EAN-128 / UCC-128 / GS1-128
"EAN-128" and "UCC-128" are older names for what's now standardized as GS1-128, which is built on the Code 128 symbology with structured Application Identifiers (for batch numbers, expiry dates, quantities, etc.). For general-purpose alphanumeric barcodes — shipping labels, internal tracking, SKUs — select Code 128 in the generator above.
Common Barcode Problems
Barcode Does Not Scan
This usually happens because:
- barcode size is too small
- print quality is poor
- barcode number is invalid
Numbers Missing Under Barcode
Some barcode formats display readable digits below the barcode image. Make sure text visibility is enabled if required.
Wrong Barcode Type
Some systems only accept specific barcode formats such as:
- UPC-A
- EAN-13
Always verify marketplace or inventory system requirements.
Who Can Use This Barcode Generator?
This tool is useful for:
- shop owners
- e-commerce sellers
- warehouse teams
- students
- startups
- supermarkets
- inventory managers
- retailers
- logistics companies
Even users without technical knowledge can generate barcodes easily.
Frequently Asked Questions
Select a barcode type, enter your numeric value and click Generate Barcode. A barcode SVG appears in the preview panel and you can download it as SVG or PNG for printing or documentation.
The generator supports EAN-13, EAN-8, UPC-A and Code 128. EAN and UPC are commonly used for retail products, while Code 128 is flexible for internal codes, shipping labels and inventory systems.
Yes. If you enter one digit fewer than the full length (for example 12 digits for EAN-13 or 11 digits for UPC-A), the generator calculates the final check digit automatically before rendering the barcode.
The generator is 100% free to use and does not add any watermark or branding to the barcode image. You are responsible for using valid product numbers assigned by your barcode provider.
Technically yes—the barcodes are standards-compliant images—but you still need properly licensed product numbers from an authority such as GS1 or from your retailer. This tool only draws the barcode image from the code you provide.
No. Barcode generation runs entirely inside your browser using JavaScript and the JsBarcode library. The numbers you enter are not transmitted or stored on a remote server.
Most scanning issues come from printing the barcode too small, using low contrast, or placing it on a curved surface. Try increasing the bar height and width, use dark ink on a light background and ensure your printer resolution is adequate.
EAN and UPC codes must be numeric only. If you need letters or a mix of characters, choose Code 128 from the barcode type menu, which supports alphanumeric data and many special characters.
Select the UPC barcode format, enter your product number, and click generate to create the barcode image.
Yes. You can generate unlimited barcodes without signup or payment.
Yes. This tool supports EAN barcode generation for international product labeling.
Yes. Download the barcode image and print it on labels, packaging, or inventory sheets.
No. The barcode generator works directly inside your browser.
Yes. The tool works on Android phones, iPhones, tablets, laptops, and desktop devices.
UPC codes usually contain 12 digits and are commonly used in North America, while EAN codes generally contain 13 digits and are used internationally.
If your 13-digit EAN starts with a 0, drop that leading zero to get a valid 12-digit UPC-A. Just enter the resulting number under the UPC-A option and the generator handles the rest.
GTIN is the umbrella term GS1 uses for product identifiers. GTIN-12 is the same thing as UPC-A, and GTIN-13 is the same thing as EAN-13 — there's no separate "GTIN format" to generate.
Yes — select Code 128, which accepts letters, numbers, and dashes, unlike UPC/EAN which are numeric-only. SKUs are internal codes, so they don't need GS1 registration.
An ASIN itself isn't a scannable retail barcode. For Amazon FBA, you need an FNSKU generated inside Seller Central; for regular retail sale, you need a GS1-registered UPC or EAN. This tool can render either as a barcode image once you have the correct number.
This tool is free to draw the barcode image itself. However, a UPC number that's legally usable on a real retail product must be licensed from GS1 — this generator doesn't issue or register product numbers.
Yes, any 11 or 12-digit number will produce a scannable, correctly checksummed UPC-A for mockups, app testing, or design placeholders. It won't correspond to a real registered product, so it shouldn't be used on anything actually sold at retail.
No. UPC/EAN are 1D barcodes made of lines, while QR codes are 2D and hold much more data. Retail POS scanners expect the 1D format this tool generates, not a QR code.
Final Thoughts
Barcodes simplify product management, billing, inventory tracking, and logistics across many industries. Whether you run a retail store, warehouse, online business, or small startup, generating accurate UPC and EAN barcodes is an essential part of modern operations.
This free online barcode generator helps you quickly create professional barcode images directly from your browser without complicated software or registration.