Barcode Generator
Generate EAN-13, Code128 and other barcodes instantly.
Generate EAN-13, Code128 and other barcodes instantly.
This free Barcode Generator from KX Toolkit is part of our all-in-one online toolkit. It runs entirely in your browser, so your data never leaves your device for client-side operations. 100% free, forever - no paywall, no credit card, no trial.
How to use the Barcode Generator
- Drop your image into the upload area, or click to browse.
- Pick the output format, size or compression level.
- Click "Process" - the tool runs and shows a preview.
- Download the result. Most tools delete your file from the server immediately after.
What you can do with the Barcode Generator
- Optimise images for web pages and faster Core Web Vitals.
- Resize photos for social media specs (1080×1080, 1200×630, etc.).
- Convert HEIC, AVIF or WebP to a more compatible format.
- Strip EXIF metadata before sharing photos online.
Why use KX Toolkit's Barcode Generator
- Browser-based: Works on Windows, macOS, Linux, iOS and Android - no install, no extension.
- Privacy-first: Client-side tools never upload your data; server-side tools delete files right after processing.
- Mobile-friendly: Full feature parity on phones and tablets - not a stripped-down view.
- Fast: Optimised for instant feedback. No artificial waiting screens, no email-gated downloads.
- One hub for everything: 300+ tools across SEO, text, image, PDF, code, color, calculators and more - skip switching between sites.
Tips for the best results
Compress your image AFTER resizing - running them in that order produces smaller files at the same visual quality.
Related Image Tools
If you find this tool useful, explore the full Image Tools collection or browse our complete tool directory. KX Toolkit is built for marketers, developers, designers, students and anyone who needs a quick utility without signing up for yet another SaaS.
Which barcode formats does the generator support?
You can create EAN-13, EAN-8, UPC-A, UPC-E, Code 128, Code 39, ITF and Codabar. EAN and UPC are used on retail products, Code 128 and Code 39 are common for logistics and internal labelling, ITF is for shipping cartons and Codabar appears in libraries and blood banks. The tool checks the input matches the rules of the chosen format and shows a clear error if a digit count or check digit is wrong before any image is rendered.
How do I make a barcode for a product I sell?
Retail barcodes are tied to a registered prefix issued by GS1, so first obtain that prefix for your country. Combine it with your product number and let the tool calculate the EAN-13 check digit automatically. Print the resulting barcode at least 25 millimetres wide so scanners can read it reliably. Test with a real scanner before mass printing, since paper colour and print quality can affect readability. Avoid resizing the printed barcode disproportionately.
In what format can I download the generated barcode?
You can download the barcode as a PNG or SVG file. SVG is best for printing because it stays sharp at any size, while PNG is easier to drop into web pages or word processor documents. There is also a copy as data URL option for embedding directly into HTML. The barcode height, bar width and font are all configurable before export, so you can match the rendered file to your label design perfectly.
Why does my barcode fail to scan?
The most common reasons are a barcode that is too small, low contrast between the bars and the background, or the bars being printed too close to other graphics with no quiet zone around them. Make sure the printout has at least 5 to 10 millimetres of empty space on either side, that the bars are pure black on pure white, and that the size matches the format. If those are correct, double check that the data and check digit are valid for the format you chose.
Can I generate many barcodes at once?
Yes. Paste a list of values, one per line, and the generator produces one barcode for each entry. You can download them all as a ZIP, or as a single PDF sheet that fits on standard label stock. This is useful for inventory tagging, ticket runs and event passes where each item needs its own unique code. The same format settings apply to every barcode in the batch, so make sure the format and dimensions are correct before exporting.
Are the generated barcodes free to use commercially?
Yes. The encoding is mathematical and the resulting image is generated entirely in your browser, so there is no licence to worry about. The data inside the barcode is your responsibility, especially for retail formats that require a registered company prefix. As long as you have the right to use the underlying numbers, the rendered barcode image can be printed on packaging, labels or tickets without any attribution to the tool.
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