Barcode Generator (Code128, EAN-13, Code39 & UPC)
Generate high-resolution 1D linear barcodes in Code 128, EAN-13, Code 39, and UPC-A formats with custom bar dimensions and printable A4 sticker label.
Generate Barcodes Online Free
Enter your SKU code or numbers, pick your barcode format, and export sharp 300 DPI PNG images or vector SVG files ready for product packaging and retail counters.
Open Barcode GeneratorQuick answer
Linear 1D barcodes encode product numbers and serials into scannable parallel lines for point-of-sale scanning and warehouse stock tracking.
This generator builds high-precision vector barcode images 100% inside your web browser sandbox with zero cloud logging.
Why generate barcodes with Photocopywala?
Sharp, compliant, and print-ready barcode graphics.
Multi-Symbology Support
Supports Code 128, EAN-13, Code 39, UPC-A, and EAN-8 standards.
SVG Vector & PNG Export
Export scalable vector graphics for crisp packaging prints at any scale.
100% In-Browser Privacy
Your product SKUs and serial numbers stay local. Zero remote server access.
Supported 1D Barcode Formats
Specifications for standard 1D linear barcode encoding:
| Barcode Symbology | Character Encoding | Output Format | Primary Application |
|---|---|---|---|
| Code 128 (Alphanumeric) | Variable Length (Text + Digits) | PNG / SVG Vector | Internal Asset & Inventory Tags |
| EAN-13 Retail Barcode | 13 Numeric Digits | PNG / SVG Vector | Retail Products & Supermarkets |
Ensure quiet zones (empty white space margins) of at least 5mm on both the left and right sides of the barcode for scanner laser alignment.
How to generate barcodes online
Follow these 3 easy steps:
Step 1 - Enter Barcode Text or Digits
Type your product SKU, serial number, or EAN-13 13-digit number.
Step 2 - Select Symbology Format
Choose Code 128, EAN-13, Code 39, or UPC-A format.
Step 3 - Download High-Res Barcode
Click Download to export high-DPI PNG, SVG vector, or A4 label sheet PDF.
Strict Private Local Execution
All processing happens locally in your browser - your files are never sent to any server.
- Zero Cloud Logging: Barcode bar geometry is rendered in local browser JavaScript.
- No Data Retention: Entered numbers are cleared from memory when you close the tab.
- No Watermarks: Export clean, professional packaging barcodes.
Best practices for scannable barcode labels
Ensure 100% scan accuracy on USB laser scanners:
Black Bars on White Background
Always use high-contrast solid black bars on a pure white background.
Use SVG Vector for Printing
Download vector SVG files when embedding barcodes into CorelDRAW or Illustrator packaging designs.
Check EAN-13 Check Digit
Ensure the 13th digit matches standard EAN checksum algorithms.
Self-Adhesive Sticker Sheets
Print barcode sheets on pre-cut A4 sticky label paper for quick product tagging.
Frequently Asked Questions
Answers to common queries about generating linear barcodes.
Which barcode symbologies are supported?
Our generator supports Code 128 (alphanumeric general purpose), EAN-13 (retail products in India & international), EAN-8, Code 39, UPC-A, and ITF-14 shipping codes.
Can I print barcode sticker sheets on standard A4 label paper?
Yes. Export individual barcode images as high-DPI PNGs or vector SVGs, or print a sheet of 24 to 48 barcode stickers on standard A4 self-adhesive sticker paper.
What is the difference between Code 128 and EAN-13?
Code 128 supports letters, numbers, and symbols of variable length (ideal for asset tags and internal inventory). EAN-13 requires exactly 13 numeric digits and is used for retail product point-of-sale barcodes.
Do generated barcodes scan with handheld Laser & CCD scanners?
Yes. Barcode bars are generated with crisp vector boundaries at 300 DPI, ensuring 100% first-pass read rates on USB/Bluetooth handheld barcode scanners and mobile camera apps.
Are my inventory numbers uploaded to remote servers?
No. Barcode image compilation takes place 100% locally inside your web browser sandbox using client-side JavaScript. No serial numbers or product data are sent to cloud servers.
Is this online tool free to use and do you store my uploaded documents?
Yes, this tool is 100% free with unlimited usage. All document rendering, calculation, and image processing run locally in your web browser memory with zero file storage on external servers.
Conversion Step
Need help preparing this file?
If your photo, signature, PDF, or document is still not accepted on a portal, contact us. We can help prepare the final file online.
We do not ask for OTP, passwords, Aadhaar login, MPOnline login or any government portal credentials.