GS1 Barcode Generator

About This Tool

Purpose-built GS1 barcode generation for product labeling and supply chain visibility. The tool accepts core product identifiers (GS1 prefix and item reference), optional AI data (batch/expiry/serial), and outputs a GS1 payload along with a ready-to-use barcode representation. It supports GTIN generation and GS1-128 payload assembly, enabling compliant labeling workflows across retailers and warehouses. The approach centers on data integrity and standard conformance to reduce labeling mistakes and streamline scan-ready outputs.
The system validates input formats, enforces allowed GTIN lengths (8, 12, 13, 14), computes the Mod-10 check digit, and concatenates AI strings in GS1 order. Advanced usage includes combining multiple AIs (01, 10, 17, 21) into a single payload for unified barcodes, while ensuring that each data element aligns with its AI semantics. The resulting payload can be exported as raw data and as a barcode image (SVG) suitable for labeling software.
Target users span manufacturers, packagers, distributors, and ecommerce sellers who need reliable, GS1-compliant barcodes to ensure accurate item identification, traceability, and seamless store-level scanning. The tool differentiates itself by strict GS1 validation, clear payload construction, and immediate, exportable outputs without requiring external services or branding.
Core features include input validation, GTIN/formats selection, check digit calculation, AI payload assembly, and exportable data and images. Typical use cases cover new product introductions, packaging reworks, and shelf-ready labeling for international supply chains.

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