EAN GTIN Generator (local) from arnmoser is a Chrome extension for creating valid EAN-13 and GTIN-14 product identifiers directly on your machine. The extension generates numeric codes, applies the official GS1 checksum, and provides batch output plus export and clipboard options for reuse. Its interface emphasizes quick batch entry, custom prefixes, and lightweight operation. E-commerce sellers, logistics staff, product developers, and testers who need private, offline identifier generation benefit most from this focused utility.

Built specifically to produce GS1-compliant numeric identifiers

The extension targets generation of product identifier numbers rather than visual label design. It supports both GTIN-13 (EAN-13) and GTIN-14 formats and implements the official GS1 checksum algorithm, which ensures generated codes are mathematically valid for retail and software validation scenarios. That focus makes the tool suited to users who need correct numeric entries for databases, listings, or integration tests.

Performs batch creation up to 100 codes with a lightweight interface

Batch processing handles up to 100 codes in a single session, and the interface is described as lightweight and responsive, which keeps local generation quick. The tool calculates check digits automatically during batch runs, reducing manual errors. Because generation happens locally, there is no dependency on external APIs that could introduce network delays during large batches.

Keeps all calculations on-device to limit external data exposure

The extension functions entirely offline and does not send data to remote servers, reflecting a privacy-first design from the developer. That on-device processing reduces the risk of transmitting proprietary SKU lists or test identifiers, a useful property for teams handling confidential product information or preparing private test data sets.

Fits into spreadsheet and inventory workflows through exports and clipboard tools

Integration points focus on simple transfer of numeric results into other systems: one-click copy to clipboard for single codes and CSV export for batch results. Typical follow-up uses include importing into spreadsheets, ERP systems, or inventory databases. The extension also runs on Chromium-based browsers, which makes it available across several desktop browser environments.

A compact, privacy-centered generator that suits focused identifier workflows

This extension is a practical choice for professionals who need a single-purpose tool to produce correct product identifiers locally; its trade-off is scope, not capability. It fits teams that separate identifier creation from label layout and inventory management, and it is most useful when paired with existing spreadsheet or inventory tools rather than as a one-stop stock solution.