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Barcode Generator

Generate print-ready 1D barcodes (Code 128, EAN-13, UPC-A, Code 39) in your browser — free, no upload.

Privacy: your files never leave your device. All processing happens locally in your browser.

How to use

  1. 1.Choose a barcode format — Code 128 for logistics/any text, EAN-13 or UPC-A for retail products, Code 39 for inventory.
  2. 2.Type your value; for EAN-13 enter 12 digits (or a full 13) and for UPC-A enter 11 digits (or a full 12) — the check digit is added or verified automatically.
  3. 3.The barcode renders instantly. Click Download SVG to save a print-ready vector file.

About Barcode Generator

This free barcode generator creates the four most-used 1D (linear) barcode symbologies right in your browser, with no sign-up and no upload — the value you type never leaves your device. Pick a format, type your data, and a scannable barcode renders instantly as you type.

Each symbology has a job. Code 128 is the workhorse of shipping and logistics: it packs any ASCII character (letters, digits, symbols) into a compact, high-density code, which is why carriers and warehouses use it for tracking labels and SSCC pallet codes. EAN-13 is the 13-digit retail barcode scanned at checkout on virtually every consumer product worldwide; UPC-A is its 12-digit North American sibling used across the US and Canada. Code 39 (also called Code 3 of 9) is an older but rugged alphanumeric format still common in automotive, defense, and internal inventory systems because it needs no check digit and is easy to print.

EAN-13 and UPC-A both end in a check digit — a modulo-10 checksum computed from the preceding digits that lets a scanner catch misreads. This tool computes it for you: enter the first 12 digits of an EAN (or 11 of a UPC) and the correct check digit is added automatically. Paste a full 13- or 12-digit code and it verifies the check digit is right, flagging typos before you print a useless label. Code 128 and Code 39 encode your text directly with no check-digit setup required.

Every barcode is produced as SVG — a vector format, so it stays razor-sharp at any size, from a tiny product tag to a full-page poster, and prints crisp on any printer. Vector output beats raster PNG/JPEG here because barcodes must keep clean, exact bar edges to scan reliably; scaling a raster image blurs those edges and can break scanning. Download the SVG with one click and drop it into your label template, packaging artwork, spreadsheet, or design file.

Because generation runs 100% locally in JavaScript, it works offline once the page loads, costs nothing, and keeps your product codes, SKUs, and tracking numbers completely private. There are no watermarks, no usage limits, and no account. Whether you are printing retail EAN/UPC labels, logistics Code 128 shipping tags, or Code 39 inventory stickers, you get standards-compliant, scanner-ready barcodes in seconds.

Frequently asked questions

What barcode format should I use?
Use EAN-13 or UPC-A for products sold at retail (EAN-13 worldwide, UPC-A in the US and Canada). Use Code 128 for shipping, logistics, and any label that needs letters plus digits. Use Code 39 for internal inventory or industrial tags where a simple, robust alphanumeric code is enough.
What is a barcode check digit?
A check digit is an extra number at the end of EAN-13 and UPC-A codes, calculated from the other digits with a modulo-10 formula. Scanners recompute it to catch misreads and typos. This tool adds the correct check digit if you leave it off, and verifies it if you include the full code.
Why does it download an SVG instead of a PNG?
SVG is a vector format, so the barcode stays perfectly sharp at any size and prints crisply on any printer — critical for reliable scanning. A raster PNG blurs its bar edges when scaled up, which can make the code fail to scan. You can open the SVG in any design tool or convert it to PNG later if needed.
Is my data uploaded anywhere?
No. The barcode is generated entirely in your browser with JavaScript. Your product codes, SKUs, and tracking numbers never leave your device, so the tool is private and works even offline once the page has loaded.

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