Free Barcode Generator Online - EAN, UPC, CODE128

Barcode Generator

100% free · Runs 100% in your browser · No signup needed

Sur Barcode Generator

What is the Barcode Generator?

A barcode generator is an online tool that converts text or numbers into a machine-readable barcode image made of vertical black bars and white spaces. Every barcode encodes its data using a specific symbology — a set of rules that defines how characters turn into bars — and the FistHost Barcode Generator supports the six most widely used symbologies: CODE128 for shipping and logistics, EAN-13 for retail products, UPC-A for North American retail, CODE39 for inventory and asset tracking, ITF (Interleaved 2 of 5) for cartons and packaging, and Codabar for libraries and laboratories. The tool renders the barcode instantly in your browser using an industry-standard encoding library, so the result is a genuine, scannable barcode — not a decorative approximation. You can adjust the bar width and height, choose the line color, and decide whether the human-readable value appears beneath the bars, then download the finished graphic as a crisp SVG vector or a high-resolution PNG for printing.

Barcodes remain the backbone of modern commerce even in the age of QR codes, because a simple linear barcode can be printed on anything from a tiny sticker to a shipping pallet and scanned with the cheapest laser or camera scanner. Small online sellers use them to track orders, warehouses use them to keep shelves accurate, freelancers use them to label equipment, and event organizers use them on tickets and badges. The FistHost Barcode Generator runs entirely client-side: your data never leaves your device, which matters when you are encoding internal SKUs, serial numbers, or other business information you would rather not upload to a stranger's server. There is no signup, no watermark, no daily limit, and no software to install — just open the page, type, and download.

How to Use the Barcode Generator

1. Type the value you want to encode into the barcode value field. For EAN-13 and UPC-A this is normally the product number assigned by your numbering authority.
2. Choose the barcode format from the dropdown: EAN-13 for retail products, UPC-A for North American retail, CODE128 for logistics and general use, CODE39 for inventory, ITF for cartons, or Codabar for libraries and labs.
3. Check the live preview — the barcode redraws automatically every time you type, so mistakes are obvious immediately.
4. If the format needs a specific shape of data (for example, EAN-13 needs 12 or 13 digits), the tool shows a friendly red error message explaining exactly what to fix.
5. Adjust the bar width (thin bars for small labels, thick bars for scanning at a distance) and the bar height to fit your label size.
6. Pick a line color if your brand needs something other than black, and toggle the human-readable value on or off.
7. Click Download SVG for a scalable vector that stays sharp at any print size, or Download PNG for a raster image ready to drop into a document, label designer, or website.
8. Print a test copy and scan it with a phone scanner app before producing hundreds of labels — a thirty-second check prevents a costly batch of unscannable stickers.

Key Features

• Supports six real symbologies: CODE128, EAN-13, UPC-A, CODE39, ITF, and Codabar — each encoded with a genuine industry-standard library.
• Live preview that updates on every keystroke, so you always see exactly what you are about to download.
• Smart validation with plain-language error messages for EAN-13 and UPC-A digit counts, ITF even-digit rules, CODE39 character limits, and Codabar start/stop letters.
• Automatic check-digit handling for EAN-13 and UPC-A — type 12 digits and the tool computes the 13th.
• Adjustable bar width and height to match everything from tiny jewelry tags to pallet labels.
• Custom line colors for branded packaging while keeping dark-on-light contrast that scanners need.
• Optional human-readable text under the bars, so staff can read or type the code when a scanner is unavailable.
• Download as SVG for print-perfect vector output or PNG for quick digital use — both generated instantly, 100% in your browser.
• Random sample button that fills a valid example for the selected format, handy for testing scanners and label designs.

Pro Tips

• Always keep barcodes at least 20mm wide when printed — thinner than that and many scanners start misreading.
• Never stretch or squeeze a barcode in an image editor; changing the proportions distorts the bar widths and breaks scanning. Export at the right size instead.
• Use CODE128 for internal codes (serial numbers, order IDs) — it is compact, supports letters and digits, and every modern scanner reads it.
• Print barcodes dark-on-light on matte paper; glossy reflections and colored backgrounds are the two biggest causes of failed scans.
• For products sold in stores, register for genuine EAN/UPC numbers with your country's numbering organization rather than inventing random ones — retailers reject duplicates.
• Download SVG for professional printing and label software; use PNG only for web pages, presentations, and quick drafts.
• Test-scan your first printed batch with at least two different devices (a phone and a hardware scanner if possible) before committing to a full print run.

When your barcode-labeled products start selling, the next thing you need is a professional home for your brand online — and that is where FistHost comes in. FistHost web hosting plans start at just $0.99/mo with a free domain included, so you can launch a store, portfolio, or business site in minutes with one-click installs, free SSL, and support that actually answers. Thousands of small sellers and freelancers run their sites on FistHost; put your storefront on the same fast, affordable platform that powers this free barcode generator.

Who Uses the Barcode Generator?

• Small online sellers and Etsy-style merchants who print SKU and order labels for every parcel they ship.
• Warehouse and stockroom staff who label bins, shelves, and cartons for fast barcode scanning during stock counts.
• Retailers preparing products for stores or marketplaces that require valid EAN-13 or UPC-A numbers.
• Freelancers and small studios who tag equipment, hard drives, and documents with CODE128 serial labels.
• Librarians, archivists, and lab managers who use Codabar for books, samples, and records.
• Event organizers printing badges, tickets, and wristbands with scannable entry codes.

Frequently Asked Questions

Are the barcodes made by this tool actually scannable?

Yes. The tool uses the JsBarcode encoding engine — the same open-source library used by thousands of commercial systems — and follows each symbology's specification exactly, including automatic check digits for EAN-13 and UPC-A. The barcodes scan with phone camera apps and hardware scanners alike, provided you print them dark-on-light at a reasonable size.

Which barcode format should I choose?

For products sold in stores, EAN-13 (most of the world) or UPC-A (North America). For internal tracking like serials, order IDs, and inventory, CODE128 is the most flexible choice. For warehouse cartons use ITF, for simple asset tags CODE39, and for libraries or laboratories Codabar.

Can I use the generated barcodes commercially?

Absolutely. The images you download are yours to use on products, packaging, labels, and marketing material with no attribution and no licensing fee. The only exception: for retail sale you must use genuine EAN/UPC numbers registered to your company, not random digits.

Should I download SVG or PNG?

Choose SVG for printing and professional label design — it is a vector format that stays razor-sharp at any size. Choose PNG for quick use on web pages, in documents, or in presentations where a raster image is fine.

Why am I seeing an error about digit counts?

Some symbologies have strict rules: EAN-13 needs 12 or 13 digits, UPC-A needs 11 or 12, and ITF needs an even number of digits. The error message tells you exactly what each format requires — adjust your value and the barcode renders instantly.

Does my data stay private?

Yes. Everything happens in your browser with JavaScript; the numbers and codes you type are never sent to any server, so internal SKUs and serials stay on your device.

Can I change the color of the barcode?

Yes — the line color picker lets you use brand colors. Scanners read by contrast, so keep the bars dark and the background light for reliable results, and always test-scan a colored barcode before a big print run.

Related Tools

• QR Code Generator — create 2D QR codes for URLs, Wi-Fi, and contact cards.
• QR Code Scanner — scan and decode QR codes with your camera or an image.
• Image Compressor — shrink your barcode and product images for faster websites.

Printing barcodes is only half the journey — selling is the other half. FistHost makes it easy to put your products in front of customers with web hosting from $0.99/mo, a free domain name included, free SSL, and one-click store installers. Whether you are listing on your own website or driving buyers from marketplaces, a fast FistHost site with your brand's domain makes every scanned package lead somewhere professional. Start your store today and keep 100% of your branding — no marketplace fees, no generic subdomain.