lindell/JsBarcode
JsBarcode
JsBarcode is a JavaScript library for generating machine-readable barcodes in both browser and Node.js environments. It supports a wide range of industry-standard symbologies including CODE128, EAN, UPC, CODE39, ITF-14, MSI, Codabar, Pharmacode, and GS1-128, with automatic check digit calculation for formats that require it.
The library renders barcodes to HTML canvas elements, scalable SVG graphics, or image elements, and provides a chainable API for creating multiple barcodes sequentially with individual options. It includes automatic checksum computation for EAN, UPC, ITF-14, and MSI formats, and can validate input data against the selected symbology's structural requirements before rendering. Barcodes can be initialized directly from HTML data attributes on DOM elements, and the library also supports encoding non-printable ASCII control characters for specialized content.
For server-side use, JsBarcode can generate barcode images in Node.js environments without a browser, enabling automated label and document production workflows. The library also offers raw encoding data extraction for custom rendering or analysis, and supports EAN addon barcode attachments with configurable spacing and styling.
Features
- Barcode Generators - Creates a machine-readable barcode image from input data, supporting multiple symbologies like CODE128, EAN, and UPC.
- Canvas Rendering - Draws barcodes onto HTML canvas elements for display or further image processing.
- SVG and Canvas Converters - Draws barcodes onto HTML canvas elements or outputs as scalable SVG graphics.
- EAN/UPC Check Digit Calculators - Verifies or automatically computes the final check digit for EAN-13, UPC, and EAN-8 barcodes.
- EAN/UPC Encoders - Encodes EAN-13, EAN-8, and UPC barcodes with automatic check digit calculation.
- Client-Side - Generating machine-readable barcodes directly in the browser using JavaScript, with output to canvas, SVG, or image elements.
- Server-Side Barcode Rendering - Generates barcode images on the server side using a Node.js canvas library without a browser.
- Barcode Check Digit Calculators - Automatically computes and appends checksum digits for EAN, UPC, ITF-14, and MSI barcode formats.
- Barcode Data Validators - Validating input data and automatically calculating checksum digits for barcode formats like EAN, MSI, and CODE39.
- Barcode Symbology Encoders - Encodes input data into multiple barcode symbologies with format-specific bar and space patterns.
- CODE128 Encoders - Encodes all 128 ASCII characters with efficient number encoding, automatically selecting the optimal sub-mode (A/B/C) or allowing manual mode selection.
- CODE39 Encoders - Renders a barcode in the CODE39 symbology, encoding numbers, uppercase letters, and a set of special characters for legacy systems.
- EAN/UPC Encoders - Creates EAN-13, EAN-8, and UPC barcodes with optional guard bars, flat rendering, and check digit validation or auto-calculation.
- Barcode Rendering Chains - Provides a chainable API for creating multiple barcodes sequentially with individual options.
- ITF-14 Check Digit Calculators - Automatically computes and appends the missing checksum digit when generating an ITF-14 barcode.
- Barcode Appearance Customizers - Adjusts barcode rendering with options like custom fonts, font size, text margin, and trailing character markers.
- EAN Addon Attachments - Attaches EAN-5 or EAN-2 supplementary barcodes to primary EAN-13 or EAN-8 codes with configurable spacing.
- HTML Attribute Barcode Initializers - Reads barcode value and options directly from data attributes on DOM elements for one-step rendering.
- ITF-14 - Creates a 14-digit GS1-standard barcode for packaging levels, with automatic checksum calculation when the check digit is omitted.
- MSI - Creates an MSI (Modified Plessey) barcode encoding numeric digits 0-9, commonly used for inventory control and warehouse labeling.
- Pharmacode - Creates a pharmaceutical-industry barcode that encodes numeric values from 3 to 131070 on canvas, SVG, or image elements.
- Sequential Barcode Chains - Creates several distinct barcodes sequentially in a single rendering pipeline with optional spacing.
- GS1-128 Encoders - Encodes CODE128 barcodes with the GS1-128/EAN-128 application identifier standard for supply chain and retail use.
- Data Attribute Barcode Initializers - Reads barcode value and options directly from data attributes on HTML elements for one-step rendering.
- Barcode Text Displays - Shows the encoded value as readable text below or beside the barcode with configurable font and alignment.
