Generate barcodes in formats like CODE128, EAN-13, etc.
For internal use - inventory tags, asset labels, scanner or printer testing - any number works, since nobody else needs to recognize it as unique. For retail sale, the barcode number itself (the GTIN) has to be licensed through GS1 or a reseller; printing a self-assigned number on a retail product risks rejection at checkout or by marketplaces like Amazon, which validate GTINs against GS1's records.
This tool doesn't touch that licensing question - it renders the barcode image from the number you provide, whether that number is GS1-licensed or made up for internal use. For EAN-13 and UPC specifically, the check digit is calculated and appended automatically if you leave it off - so a 12-digit EAN-13 value or an 11-digit UPC value becomes a complete, correctly-checksummed barcode.
The generator runs entirely in your browser.
This barcode generator creates CODE128, CODE39, EAN-13, UPC, ITF, MSI, and Pharmacode barcodes, downloadable as PNG or SVG. It's worth knowing upfront: a barcode image and a licensed retail barcode number are two different things - this tool makes the image from whatever value you enter, but doesn't check whether you're licensed to use that number for retail sale.
Write digits or text for the barcode.
Adjust size, color, width, and height.
Instant preview updates with every change.
Save as PNG or copy the barcode.
Generate a barcode for internal tracking with any number - no licensing needed since it's not sold at retail.
Generate a quick barcode to confirm a scanner or label printer setup works correctly.
Once you hold a GS1-licensed GTIN, generate the printable barcode image here.
Enter 12 digits for EAN-13 or 11 for UPC and the tool appends the correct check digit automatically.
Download as SVG so the barcode stays crisp at any print size.
Best For
Barcode Value Entered
590123412345 (12 digits, format set to EAN-13)Result
A scannable EAN-13 barcode with the 13th check digit calculated and appended automaticallyVerified directly in the barcode library's code: EAN-13 and UPC both calculate their own check digit when given the un-checked length. If you instead type a full-length EAN-13 or UPC with an incorrect check digit, the tool won't render a barcode at all rather than producing an invalid, unscannable one.
Generate a barcode for a warehouse, library, or asset-tracking system where the number just needs to be unique within your own system.
Generate a sample barcode to confirm hardware reads and prints correctly before a real rollout - no licensing concerns apply here.
Once you've obtained a licensed GTIN through GS1 or a reseller, use this tool to generate the actual printable barcode image for packaging.
Problem
Solution
This tool doesn't check whether a number is licensed - it just renders whatever you type. A barcode with a made-up EAN-13 or UPC number can get a retail product rejected at checkout or by marketplaces that validate GTINs against GS1's records. Get a licensed number first if the product will be sold at retail.
Problem
Solution
If the check digit doesn't match what the format requires, the tool shows nothing rather than an invalid barcode. Enter the value without a check digit (12 digits for EAN-13, 11 for UPC) and let the tool calculate it correctly.
Problem
Solution
Only the bar/line color is adjustable. The background is fixed at white - there's no control to change it.
Problem
Solution
This tool generates one barcode at a time - there's no bulk or sequential generation for a range of numbers.
Enter the value one digit short of the full length (12 for EAN-13, 11 for UPC) rather than guessing the final check digit yourself.
SVG output stays sharp at any size, which matters for product labels and packaging. PNG is fine for on-screen or digital use.
The margin field controls the quiet zone around the barcode - a wider margin helps scanners lock onto the code, especially at small print sizes.
If the product will be sold through a retailer or marketplace, get a GS1-licensed GTIN before finalizing packaging - generating the image here doesn't establish that license.
The tool renders a barcode image from whatever number you provide - it has no way to confirm that number is GS1-licensed or safe to use on a retail product.
Only the bar/line color can be changed. There's no control for the background color.
There's no bulk or sequential generation for producing a range of barcode numbers at once.
The output is a single barcode image (PNG or SVG) - not a print-ready sheet of multiple labels.
Both create scannable codes, but for different scanning hardware and different data.
| Barcode Generator | QR Code Generator | |
|---|---|---|
| Best for | Retail products, inventory, and logistics - anywhere a barcode scanner is used | Links, WiFi, or contact info - anywhere a phone camera scans |
| Data capacity | Limited - mostly short numeric or alphanumeric values depending on format | Much higher - a full URL or block of text |
| Retail legality | Needs a GS1-licensed number for genuine retail sale | No licensing body involved - any text or URL works |
Which should you use?
Use the Barcode Generator for retail products, inventory, or systems that already expect a barcode. Use the QR Code Generator for anything meant to be scanned with a phone camera, like a link or WiFi network.
The most common question is whether these barcodes can go straight onto a retail product - the honest answer depends on whether the number is GS1-licensed, which the FAQ below explains along with how the check digit works.
It depends on the use. For internal inventory, asset tags, or scanner testing, any number works with no licensing required. For a barcode that will actually be scanned at retail checkout or listed on a marketplace, the number itself (the GTIN) needs to be licensed through GS1 or a reseller - this tool creates the barcode image from whatever number you enter, but doesn't check or grant that license.
Yes, for EAN-13 and UPC. Enter the value one digit short of the full length (12 digits for EAN-13, 11 for UPC) and the tool calculates and appends the correct check digit automatically. If you type a full-length code with an incorrect check digit instead, the tool won't render a barcode at all.
EAN-13 and UPC are the standard retail formats (EAN-13 internationally, UPC in North America). CODE128 handles longer alphanumeric values and is common in logistics and shipping. CODE39 is a simpler alphanumeric format often used for internal labels. ITF, MSI, and Pharmacode cover more specialized use cases.
No. Only the bar/line color has a color picker in this tool - the background is fixed at white.
Yes. CoditTools generates the barcode entirely in your browser using JavaScript. The value you enter is never uploaded to any server.
No, this tool creates one barcode at a time - there's no bulk or sequential generation for a range of numbers.
Leave your email so we can prioritize similar tools and updates.
Trending tools will appear as visitors explore the catalog.
Your recently visited tools will show up here.