Question 1

Is this barcode generator really free?

Accepted Answer

Yes, completely, including commercial use, bulk generation, and every export format. There's no sign-up, no watermark, and no feature held back behind a paywall: SVG export and CSV batch generation are free like everything else here.

Question 2

Do I need to sign up or give my email address?

Accepted Answer

No. Pick a format, type a value, and your barcode is ready: no account, no email, no time limit.

Question 3

Does my barcode data get uploaded anywhere?

Accepted Answer

No. Every barcode is encoded and drawn entirely in your browser, on a canvas or as SVG. This tool doesn't even have a server to upload to. Nothing you type is ever transmitted anywhere, including when you export a PNG, SVG, or PDF.

Question 4

What barcode formats does this support?

Accepted Answer

Sixteen in total: Code 128, EAN-13, EAN-8, UPC-A, UPC-E, Code 39, ITF-14, ISBN, GS1 DataBar, PDF417, Data Matrix, MSI, Codabar, USPS POSTNET, USPS PLANET, and Pharmacode, covering retail products, shipping and logistics, books, 2D data codes, and postal mail.

Question 5

What's the difference between EAN-13 and UPC-A?

Accepted Answer

EAN-13 is the international 13-digit retail barcode standard; UPC-A is its 12-digit North American predecessor. A UPC-A number is really just an EAN-13 with a leading zero, and virtually every modern scanner reads both. Pick UPC-A only if a specific retailer or supplier tells you to.

Question 6

Can I use these barcodes to sell products on Amazon or in stores?

Accepted Answer

Only if the number itself is a real, officially registered GS1 product number. This tool draws a correct, scannable barcode for whatever number you give it. A valid check digit doesn't mean it's a number retailers will actually accept.

Question 7

Why do I need a GS1 number, and does this tool provide one?

Accepted Answer

A GS1 number (like a UPC or EAN) has to be assigned to your company through GS1 before retailers, marketplaces, or point-of-sale systems will accept it as legitimate. Generating the barcode image is a separate step from registering the number. This works as a GS1 barcode generator for any number you already have or are in the process of registering; it handles the image, while the number itself comes from gs1.org or your country's GS1 member organization.

Question 8

What size should I print my barcode?

Accepted Answer

Use the Bar height and Module width controls to match your label. Most retail barcodes print well around 20–30mm tall with the default module width. Whatever size you pick, download the PNG (it renders well above 300 DPI) or the SVG for a perfectly sharp result at any size.

Question 9

Should I download PNG, SVG, or PDF?

Accepted Answer

PNG for websites, documents, or anywhere a plain image works. SVG if you need to resize it without any quality loss, especially before sending it to a printer. PDF if you just want a ready-to-print single label, already sized to a standard 4×2 in barcode label.

Question 10

Will this barcode actually scan?

Accepted Answer

It should, as long as there's enough contrast and empty space (quiet zone) around it. This tool warns you if your chosen colors are too close in contrast to scan reliably. The encoding itself, including the check digit, is calculated automatically and validated before anything is drawn, so the data is correct; printing conditions are the only variable left. When in doubt, test it with a phone camera before printing a large batch.

Question 11

Can I change the barcode's color?

Accepted Answer

Yes, use the foreground and background color pickers to set any colors you like. Just watch for the low-contrast warning: scanners need strong contrast between the bars and the background, and a barcode that looks fine on-screen can still fail to scan if the colors are too similar.

Question 12

Does this tool work as a bulk barcode generator?

Accepted Answer

Yes. This is a genuine bulk barcode generator, and the batch side is free like everything else here. Use sequential numbering to auto-increment a starting number across a run, or upload a CSV of values, and download every barcode at once as a ZIP of PNG, SVG, or PDF files, your choice.

Question 13

Can I generate barcodes from an Excel spreadsheet or list?

Accepted Answer

Yes. Export your Excel or Google Sheets column as a CSV file (File → Download → Comma Separated Values in either), then upload it here. This tool reads the first column of each row and generates one correct barcode per value, all packaged into a single ZIP download.

Question 14

Can I turn plain text into a barcode, not just numbers?

Accepted Answer

Yes. Code 128, PDF417, and Data Matrix (this tool's two 2D barcode formats) all accept any text, not just digits, so you can encode a name, URL, code, or short message directly, not just a product number.

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