Barcode Generator: free online, fast and secure
Barcodes let shops, warehouses and billing software scan products quickly. This generator creates the most common barcode types: EAN-13 and UPC-A for retail, Code 128 and Code 39 for internal labels and shipping, and ITF-14 for cartons.
Check digits are calculated and validated automatically. Adjust bar width, height and colour, and download a high-resolution PNG or a vector SVG for crisp printing.
How to use Barcode Generator
- Enter the value. Product number or any text for Code 128.
- Choose the type and style. EAN-13, UPC, Code 128 and more; set width and height.
- Download. PNG for quick use, SVG for print.
Why use ConvertKaro Barcode Generator? Free, fast and secure
Here is what makes this Barcode Generator tool different from most websites.
100% Free
Every feature of this tool is free for everyone. We do not lock better quality or bigger files behind a paid plan.
Fast results
Your file is processed right inside your browser, so there is no upload or download queue. Most jobs finish in a second or two, even on a slow mobile connection.
Secure and private
Privacy is built in: the conversion runs locally with JavaScript, so your data is never sent to us or anyone else. Close the tab and everything is gone.
No signup, no watermark
No registration and no watermark, ever. What you download is exactly your file.
Works on every device
Works in Chrome, Safari, Edge and Firefox on Android, iPhone, Windows, Mac and Linux. No app to install.
Automatic check digits
Enter 12 digits for EAN-13 and the 13th check digit is added correctly.
ConvertKaro vs other websites and apps
| ConvertKaro | Typical website or app | |
|---|---|---|
| Price | Free forever, every feature | Free trial, then paid plans |
| Your data | Stay on your device | Uploaded to a server |
| Signup | Not needed | Often required |
| Watermark or ads on result | Never | Common on free plans |
| Speed | Instant, no upload wait | Depends on upload speed |
| Daily limits | None | Usually limited |
Common uses for Barcode Generator
- Product labels for shops and e-commerce
- Inventory and warehouse management
- Library and asset tagging
- Shipping and carton labels
- Billing software testing
Tips for the best results
- Retail EAN-13 numbers for selling in stores must be registered with GS1 India.
- Use Code 128 for internal SKUs with letters.
- Print at 100% scale and test with a scanner.
- Keep a quiet margin around the barcode.
Good to know
Developers often paste API keys, tokens, customer data and internal code into online tools without thinking about where that data goes. Many “free” developer websites send everything to their servers and log it. Barcode Generator runs completely in your browser using standard web APIs, so it is safe for production data. It also works offline once loaded, which makes it handy on slow connections or restricted networks.
| Price | Free, no limits |
|---|---|
| Processing | In your browser, instant |
| Signup | Not required |
| Watermark | None |
| Works on | Android, iPhone, Windows, Mac, Linux |
| Category | Developer tools |
How Barcode Generator keeps your code and data private
Barcode Generator is written in JavaScript and runs entirely inside the browser tab you have open. When you type or paste, the result is calculated on your own device. Nothing is sent to ConvertKaro or any third party, nothing is saved in a database, and there are no accounts or tracking of what you enter. That makes it safe for private code and data, such as salary figures, client data, API keys or personal notes.
Using Barcode Generator on your phone
Barcode Generator is designed for small screens. Buttons are large, options are simple, and results update as you type. On iPhone, downloaded files appear in the Files app under Downloads; on Android they go to the Downloads folder.
Who uses Barcode Generator?
Barcode Generator is used every day by people from many backgrounds, for example:
- Web developers and programmers
- Students learning coding and web design
- Digital marketers and SEO specialists
- Testers and support engineers debugging data
- Small business owners managing their own websites
Supported input: Plain text, JSON, CSS, JavaScript, HTML, URLs, Base64, tokens and image files where relevant.
Frequently asked questions
Can I sell products with these barcodes?
For supermarkets and Amazon you need official GS1 numbers; the generator then creates the barcode image for them.
Which type should I use?
EAN-13 for retail products in India, Code 128 for internal labels with letters and numbers.
Why is my value invalid?
Each type has rules, for example EAN-13 needs 12 or 13 digits only.
Is Barcode Generator really free?
Yes. Barcode Generator on ConvertKaro is 100% free with no limits, no signup and no watermark. There is no paid version.
Is it safe to use Barcode Generator online?
It is one of the safest ways to do it, because nothing is uploaded. All processing happens locally on your device, and the data disappear when you close the page.
Does Barcode Generator work on mobile?
Yes. It works in Chrome and Safari on Android phones and iPhones, as well as on tablets and computers. No app is needed.
Do I need to install anything to use Barcode Generator?
Nothing to install. Open the page in any modern browser and it works immediately, even offline after loading.
Will ConvertKaro add a watermark or ask me to sign up?
No. There is no watermark, no login and no email required. Copy or download the result as it is.
Does Barcode Generator work offline?
Once this page has finished loading, the tool keeps working even if your internet connection drops, because all processing happens on your device.
Related free tools
You may also find these tools useful: QR Code Generator, QR Code Scanner, UUID Generator, GST Calculator, Image to Base64.