lindell/jsbarcode

JsBarcode is a JavaScript library that generates barcodes and draws them into a web page or a server-side canvas. You give it a value (a number, a string, a product code) and it produces a visual barcode that you can embed in an SVG element, an HTML canvas, or an image tag. It has no required dependencies for browser use, though it also works with jQuery if you prefer that style. The library supports a wide range of barcode formats, including CODE128 (the most common general-purpose linear barcode), EAN-13 and EAN-8 (the formats used on retail products), UPC-A (used in North America), CODE39, ITF-14 (common on shipping cartons), Codabar, MSI, Pharmacode, and CODE93. For most use cases you just pass your value and let the library pick the appropriate format automatically. Usage in a browser is straightforward: place an SVG, canvas, or img element in your HTML with an id, then call JsBarcode with that element's selector and the value you want encoded. You can pass an options object to control bar width, height, colors, font, text display, and margins. A chaining API lets you place multiple barcodes in sequence inside a single element, with optional blank space between them. You can also set barcode options directly as HTML attributes on the element and then call a single init function to render them all at once. For server-side use with Node.js, JsBarcode works with the node-canvas library (which provides a Canvas implementation outside the browser) or with an SVG DOM library to produce SVG strings. Installation is via npm or a CDN script tag. The library offers separate bundles for individual barcode formats if you only need one type and want a smaller file size.