Most barcode generators I found online had the same problems:
👉 Too many ads
👉 Slow performance
👉 Required signup
So I decided to build my own.
But with one rule:
👉 No backend. Everything runs in the browser.
The Idea
I wanted a tool that:
- Works instantly
- Requires no login
- Runs entirely client-side
- Supports multiple barcode formats
Tech Stack
I kept it as simple as possible:
- Vanilla JavaScript
- HTML + CSS
- No frameworks
- No API calls
Everything is generated directly in the browser.
Supported Formats
The tool currently supports:
- EAN-13
- Code128
- UPC
- QR codes (WiFi, URL, email)
How It Works
Instead of sending data to a server:
- User enters input
- JavaScript generates the barcode
- It renders instantly on screen
- User downloads it
No requests, no latency.
Why No Backend?
I chose this approach for a few reasons:
- Speed
No API = instant response
- Privacy
User data never leaves the browser
- Simplicity
No server = less maintenance
Challenges I Faced
Barcode accuracy
Ensuring the generated barcodes are scannable and valid
Cross-device support
Making it work smoothly on mobile
Performance
Keeping everything lightweight
What I Learned
- You don’t always need a backend
- Simpler solutions often perform better
- UX matters more than complexity
Try It Yourself
I made the tool public here:
👉 https://barkodkarekod.com
It runs entirely in your browser.
What’s Next?
I’m currently improving it for:
- Amazon FBA barcode requirements
- Better label sizing
- More export options
If you’ve built something similar or have ideas to improve it, I’d love your feedback 👀
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