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Barcode Generator

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Generate 1D barcodes (EAN, UPC, Code 128, Code 39) from any numeric or alphanumeric string.

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Barcode Generator

Generate 1D barcodes from text or numbers

Barcode Types

  • Code 128: Can encode all 128 ASCII characters
  • Code 39: alphanumeric, used in military and automotive
  • EAN-13: International product barcodes (12 digits + check digit)
  • EAN-8: Short product barcodes (7 digits + check digit)
  • UPC-A: US product barcodes (11 digits + check digit)
  • Codabar: Used in libraries, blood banks, etc.

How to use the Barcode Generator

Barcode Generator handles your images right in your browser. Pick a file, adjust the settings, and see previews update in real time. Your images never leave your device — complete privacy.

Why use the Barcode Generator

Unlike most image tools, Barcode Generator processes everything client-side. Your images stay on your device, results are instant, and there are no arbitrary limits on file size.

When to use Barcode Generator

Use Barcode Generator when you need to resize, crop, or convert an image for a specific platform requirement — a 1200×630 Open Graph preview, a 150×150 avatar, or a WebP version of a JPEG for faster page loads. Everything processes locally, so you can work with product photos, headshots, or design mockups without uploading them to a server.

Key features of Barcode Generator

Barcode Generator processes images entirely in your browser using Canvas APIs, so your files never reach a server. You get unlimited file size, instant processing, and complete privacy — ideal for sensitive or proprietary image assets.

Common use cases for Barcode Generator

Barcode Generator is used when: converting a screenshot from PNG to JPEG to reduce file size before attaching it to a support ticket; resizing product photos to match e-commerce platform dimension requirements; and stripping EXIF metadata from images before sharing them publicly.

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Quick answers for Barcode Generator

What does the Barcode Generator do?
Generate 1D barcodes (EAN, UPC, Code 128, Code 39) from any numeric or alphanumeric string. The Barcode Generator is one of 900+ free developer tools on Toolblip - all open to use without a signup.
How do I use the Barcode Generator?
Open the Barcode Generator on this page, paste or upload your input, and the result updates as you type. Use the copy button to grab the output, or adjust options to tune the result. Nothing you enter leaves your browser.
Is the Barcode Generator free to use?
Yes. The Barcode Generator is a free online tool on Toolblip - no signup, no account, no hidden usage limits. It runs in your browser and works on desktop and mobile.
Is the Barcode Generator safe and private?
Yes. The Barcode Generator processes your data entirely client-side, so nothing you paste is uploaded or stored on any server. It's safe to use with internal snippets, private keys for debugging, or any other sensitive content you'd rather not send to a remote service.
What kind of output does the Barcode Generator produce?
The Barcode Generator produces clean, formatted output that you can copy or download with a single click. The output is tailored to the tool's purpose — formatted code, converted data, transformed text, or processed media — and is ready for immediate use in your project or workflow.
Does the Barcode Generator work on mobile devices?
Yes. The Barcode Generator is designed to work on any device with a modern browser, including phones and tablets. The interface adapts to smaller screens, and the core functionality — paste input, transform, copy output — works the same way regardless of your device.
Are my images uploaded anywhere when I use the Barcode Generator?
No. The Barcode Generator processes images fully client-side using the Canvas API. Your files never leave your browser, so you can safely work with personal photos, design mockups, or confidential assets.
What image formats does the Barcode Generator support?
The Barcode Generator works with common web image formats including PNG, JPEG, WebP, GIF, and SVG. The specific operations available depend on the format — lossless formats like PNG preserve quality through transformations, while lossy formats like JPEG may show compression artefacts after re-encoding.
Can I use the Barcode Generator offline?
Once the page has loaded, the Barcode Generator continues to work without an internet connection. Bookmark this page and return to it anytime - all logic runs locally.