Create CODE128, EAN-13, UPC, CODE39 and more.
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Generate retail-ready barcodes for inventory, shipping labels, ticketing and product tags. This tool supports CODE128 (general-purpose alphanumeric), EAN-13 and EAN-8 (European retail), UPC (North American retail), CODE39, ITF-14 (cartons), Codabar and MSI. Tune bar width, height and the displayed value, then export as PNG (raster, great for thermal printers) or SVG (vector, perfect for print catalogues). Everything runs in your browser — no upload, no watermark.
Adjust the settings that shape your barcode — length, style, character sets, or any format flags shown above the preview.
Click the generate button to produce a fresh, unique barcode using your browser's cryptographic random source.
If the first result doesn't fit, regenerate as many times as you like — each output is independent.
Copy the value to your clipboard or export it as a file for use in your project, config, or account.
Barcode Generator solves the problem of producing high-entropy, correctly-formatted values on demand without opening a terminal or hunting for a snippet on Stack Overflow. Whether you need a value for a config file, a test fixture, a demo, or a production credential, having a trustworthy generator one click away removes friction from a dozen tiny workflows a week. Toolzer's design philosophy is simple: privacy-first (no tracking, no accounts), performance-first (the page is interactive in under a second on a 3G connection), and honesty-first (no fake ratings, no dark patterns, no upsells). Barcode Generator follows the same rules as every other utility on the site. You can bookmark this page, share the URL with a colleague, or pin it to your browser's toolbar — the experience will be identical every visit, and it will keep working even if you're on airplane Wi-Fi. Real people use this tool for real work — freelancers cleaning up client deliverables, sysadmins triaging tickets, students finishing assignments — and it is tuned for those workflows, not for demo videos.
Use EAN-13 / UPC for products sold in retail, CODE128 for internal warehouse use, ITF-14 for shipping cartons, and CODE39 when you need a simple letters+digits code for asset tags.
Yes — but the generator computes it automatically. Enter the first 12 digits and the 13th is appended.
Yes, when printed at sufficient size and DPI. SVG export gives the sharpest result on a laser or label printer.
No. Every utility on Toolzer is free, anonymous, and works in any modern browser without registration.
Yes. Whenever the tool can produce an answer entirely in the browser, the data never leaves your device.
Yes. The interface is fully responsive and works on iOS Safari, Android Chrome, and every modern mobile browser.
Yes. Every Toolzer page has a clean permanent URL you can bookmark or share.
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