--- title: "Barcode Maker (Free Image Generator)" description: "Turn any value into a scannable 1D barcode image. Free maker, a one-line embed that re-renders per parcel, and an API to encode codes at scale." url: "https://www.imejis.io/blogs/tutorials/barcode-image-generator" published: "2026-08-02" --- # Barcode Maker (Free Image Generator) A barcode maker turns any value into a scannable 1D barcode image. Type the code, choose a format like Code 128 or EAN-13, download a PNG. It's for the labels, tickets, and SKUs you print or embed, not a warehouse scanner rig. ## What a barcode shows A 1D barcode encodes one string of characters as a pattern of vertical bars and spaces. A scanner reads the widths, decodes the value, and hands it to whatever system is listening. That's the whole job. Encode a value, scan it back. The format, or symbology, decides what fits and how it's drawn: - **Code 128:** the flexible default. Letters, digits, and symbols. Great for tracking numbers and internal IDs. - **EAN-13 and UPC-A:** retail product codes. A 13-digit GTIN or a 12-digit UPC on packaging and shelf tags. - **Code 39, ITF-14, Codabar, and more:** older or niche symbologies for specific industries. Under the bars you can show the human-readable text, so a person reads the same value the scanner does. Turn that off for bars only when space is tight. The rules for each symbology are well documented if you want the detail behind them, starting with the [barcode overview on Wikipedia](https://en.wikipedia.org/wiki/Barcode) and the [Code 128 spec](https://en.wikipedia.org/wiki/Code_128). ## Make one free Open the [barcode maker](/tools/barcode-generator). Enter your value, pick the format, set the bar and background colors, and download. No signup, no watermark. The PNG exports at 2x the preview size, so it stays sharp on printed labels. The value has to be valid for the format you pick. EAN-13 wants 13 digits, Code 128 takes almost anything. If the value doesn't fit, you'll see a placeholder instead of a broken code, so you catch the mistake before you print a sheet of them. ## Embed it anywhere A barcode image embeds like any other image. One line of HTML and it renders inline: ```html Code 128 barcode for SKU-2026-0715 ``` The handy part comes next. Point at a **render URL** and pass the value as a parameter, and the same URL encodes a different code every time it loads. One shipping label design becomes a unique barcode per parcel. One ticket template becomes a fresh entry code per attendee. No image to edit, nothing to re-export. Save a static file when you want one fixed barcode, like a single product's UPC. Reach for a render URL when the code changes per item. ## Generate at scale One barcode by hand is fine. A thousand, one per order, is a job for the API. The barcode is API-first, which makes it [a component you configure](/components/barcode) once and render on demand. One call takes a value and returns the image. A few ways people wire it up: - **In bulk:** loop over a spreadsheet of SKUs and render a labeled barcode for each row. - **Per request:** your app mints a unique ticket code the moment someone checks out. - **Through an [AI agent over MCP](/agents):** the agent pulls the tracking numbers and calls the render itself, no glue code from you. The [API docs](/apis) give you tested calls to copy, so the request format isn't a puzzle. Design the label once and let values flow through. ## Start making barcodes Type a value, get bars that scan. - Build one now in the [barcode maker](/tools/barcode-generator), free, PNG download. - Configure it as an API [component](/components/barcode) and encode a new value per render. - Automate it through the [API](/apis) or an [AI agent](/agents). The free plan covers [100 renders a month](/pricing), enough to label a small batch and watch the codes scan before you pay.