James Allman — JA Technology Solutions LLC
GS1 Application Identifier Parser
Parse GS1-128 and DataMatrix Application Identifier strings into structured, human-readable fields with validation.
GS1 Application Identifier Parser
Paste a GS1 Application Identifier string — parenthesized format like (01)09501101530003(17)250401 or raw FNC1-delimited — and see every AI code decoded into its name, value, format, and validation status. Dates are decoded to human-readable format, weights are converted with the correct decimal position, and GTIN check digits are validated automatically. Includes a searchable reference table of all GS1 AI codes. Everything runs in your browser — your barcode data never leaves your machine.
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What Are GS1 Application Identifiers?
GS1 Application Identifiers (AIs) are numeric prefixes that define the meaning and format of the data that follows in a GS1-128, GS1 DataMatrix, or GS1 QR Code barcode. For example, AI (01) means the next 14 digits are a GTIN, AI (17) means the next 6 digits are an expiration date in YYMMDD format, and AI (10) means the following characters (up to 20) are a batch/lot number. The GS1 General Specifications define over 200 AI codes covering identification, dates, quantities, weights, dimensions, locations, and more.
Why Parse AI Strings?
When a scanner reads a GS1-128 barcode, it returns a raw string of digits and characters. Without parsing the AI codes, that string is meaningless. This tool breaks it down into individual fields with human-readable names, validates formats and check digits, and decodes dates and weights into usable values. It’s useful for verifying label accuracy, debugging scanner output, testing EDI integrations, and training warehouse or receiving staff.
GS1 in the Supply Chain
GS1 standards underpin global supply chain data exchange. Retailers require GS1-128 shipping labels with SSCC, GTIN, batch, and date AIs. Healthcare mandates serialized GTIN + expiration + lot for pharmaceutical traceability. Food distributors use weight AIs for variable-measure items. Each industry layer — manufacturer, distributor, retailer, regulator — expects specific AI combinations, and getting them wrong means rejected shipments, compliance violations, or lost traceability.
Barcode and Supply Chain Services
This tool parses and validates individual AI strings. For automated barcode label generation, GS1-128 compliance checking, EDI integration with barcode data, and warehouse scanning systems, I build the infrastructure. See the Barcode Explorer for scanning and generating barcodes, or learn about integration services. Have questions? Ask James.
All tools run entirely in your browser. Your data never leaves your machine. Need help? Ask James.