Free Barcode Generator – ISBN, EAN, UPC, GS1 & QR

Use the free barcode generator toolkit below, browse the complete tool directory, or read the methods and limitations. For background reading, visit our barcode articles.

BarcodeApp.in · runs entirely in your browser

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.

ISBN Barcode EAN / UPC GS1 Barcodes QR Code

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. 1

    Choose a barcode tool

    Select ISBN, EAN, UPC, GS1, QR or another supported format.

  2. 2

    Enter your information

    Enter the identifier or content required by the selected barcode.

  3. 3

    Validate your data

    The tool checks length, characters and check digits where applicable.

  4. 4

    Customize the barcode

    Adjust dimensions, label visibility and safe visual settings.

  5. 5

    Generate

    Preview the resulting barcode immediately.

  6. 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.

BarcodeApp.in generates barcode symbols from identifiers supplied by you. It does not issue or register GS1, ISBN, ISSN or ISMN identifiers.

Barcode and QR tool directory

Choose a tool below to open its interactive form above. These descriptions are available even when JavaScript is unavailable; generation requires a supported browser with JavaScript enabled.

How these tools work and who publishes them

The homepage toolkit encodes the values you supply, checks supported formats and calculates check digits where applicable. Its generation runs in your browser. The separate legacy Universal Barcode Generator processes generation requests on the website server. Do not treat barcode validation as proof of identifier ownership or registration.

BarcodeApp.in does not allocate ISBNs, GS1 identifiers, ISSNs or ISMNs, and is not a certified barcode-verification laboratory. Test printed symbols at their final size and contrast using the intended scanners. Refer to the relevant standards body, identifier agency or trading partner for current requirements.

Published and maintained by GURMEETWEB TECHNICAL LABS®. About the publisher · Report an error or suggest a correction. For ISBN allocation information, see the International ISBN Agency.