Free Barcode Generator, QR Code & GS1 Barcode Tools
Create professional ISBN, EAN, UPC, GS1, QR and other commonly used barcodes directly in your browser. Validate numbers, calculate check digits, customize barcode graphics and download high-quality PNG, JPG, SVG or PDF files.
Barcode generation happens in your browser. Your entered data is not uploaded by these tools.
What barcode do you need?
How to Use BarcodeApp.in
- 1
Choose a barcode tool
Select ISBN, EAN, UPC, GS1, QR or another supported format.
- 2
Enter your information
Enter the identifier or content required by the selected barcode.
- 3
Validate your data
The tool checks length, characters and check digits where applicable.
- 4
Customize the barcode
Adjust dimensions, label visibility and safe visual settings.
- 5
Generate
Preview the resulting barcode immediately.
- 6
Download or print
Export PNG, JPG, SVG or PDF where supported.
Which barcode should I use?
Answer one question for general guidance. This is advice, not a guarantee of regulatory compliance.
Barcode guide & definitions
What is an ISBN barcode?
An ISBN barcode is a Bookland EAN-13 symbol that encodes a 13-digit ISBN (starting 978 or 979) so retailers and libraries can scan a book. It often carries an EAN-5 price add-on on the right.
What is EAN-13?
EAN-13 is the standard 13-digit retail barcode used worldwide on consumer products. Twelve digits carry the number and the thirteenth is a modulo-10 check digit.
What is UPC-A?
UPC-A is the 12-digit retail barcode used mainly in the US and Canada. It is a subset of EAN-13 (an EAN-13 with a leading zero).
EAN vs UPC
UPC-A has 12 digits; EAN-13 has 13. Modern scanners read both. EAN-13 is common globally while UPC-A is common in North America.
What is a GTIN?
A GTIN (Global Trade Item Number) is the underlying product number encoded by EAN-8, UPC-A, EAN-13 and ITF-14 as GTIN-8/12/13/14. The barcode is just the visual carrier of the GTIN.
What is GS1-128?
GS1-128 uses Code 128 with a leading FNC1 to carry GS1 Application Identifiers such as GTIN (01), batch/lot (10), expiry (17) and serial (21) for logistics and traceability.
What is ITF-14?
ITF-14 encodes a 14-digit GTIN using Interleaved 2 of 5 and is printed on cartons and cases, usually with a heavy “bearer bar” frame for print reliability.
What is a QR code?
A QR code is a 2D matrix barcode that stores text, URLs, Wi-Fi credentials or contact details with built-in Reed-Solomon error correction so it stays readable even when partly damaged.
QR code vs barcode
Traditional 1D barcodes store a short number in a line of bars. 2D codes like QR and DataMatrix store far more data in a square grid and can be read from any angle.
What is a barcode check digit?
A check digit is a final digit calculated from the earlier digits (often modulo-10). Scanners recompute it to detect misreads and typing errors.
Barcode format comparison
Frequently asked questions
Always test the final printed barcode with the scanners and production workflow where it will be used. Scan reliability also depends on print quality, size, contrast, quiet zone and the scanner used.