Home / Developer / Barcode Generator

Barcode Generator

CODE128, EAN-13, UPC, CODE39 and more as PNG/SVG.

Free, no uploads, no sign-up. Runs 100% in your browser.

How Barcode Generator works

Barcode Generator runs entirely in your browser. CODE128, EAN-13, UPC, CODE39 and more as PNG/SVG. Under the hood it uses JsBarcode (a barcode generator for CODE128, EAN, UPC and more). Your files are read into this tab’s memory, processed on your own CPU, and handed back to you as a download. Nothing is sent to a server.

How to use Barcode Generator

1. Open Barcode Generator and paste or type your input.
2. Results update instantly as you type.
3. Tweak options such as format, indentation or algorithm.
4. Copy the output or download it as a file.

Tips

• Everything is computed locally. Safe for tokens, keys and private data.
• Use Ctrl/⌘ + K to jump between developer tools quickly.

Barcode Generator FAQ

Are my files uploaded?

No. This tool runs entirely in your browser tab. Files are read from your disk into memory and the result is generated locally.

Is it free? Are there limits or watermarks?

Free and open source (MIT). There are no file-size caps, daily quotas, accounts or watermarks.

Does it work offline?

Yes, once the page (and any engine it needs) has loaded, it keeps working without a connection thanks to the service worker cache.

Related tools

• JSON Formatter: Prettify, validate, minify and explore JSON as a tree.
• QR Code Generator: QR codes for links, Wi-Fi, vCards and text with colors and logo.
• Encoding Toolbox (Recipe Chains): Chain encodings: Base64, hex, Base32/58/62/85, gzip, URL, punycode, quoted-printable, MessagePack, protobuf and more.
• JWT Decoder: Decode JWT headers/payloads and check expiry locally.