# GS1 QR Code > Source: https://docs.barcoder.ai/docs/standards/gs1-qr-code > research date 2026-05-30 · extracted at 2026-05-30 > Publisher: Barcoder — encyclopedia of QR, barcode and payment-code standards Specifications: - [GS1 QR Code — GS1 Standards](https://www.gs1.org/standards/barcodes/qr-code) - [ISO/IEC 18004:2015 — QR Code bar code symbology specification](https://www.iso.org/standard/62021.html) - [GS1 Digital Link — GS1 Standards](https://www.gs1.org/standards/gs1-digital-link) # GS1 QR Code ## Overview **GS1 QR Code** is an application profile of the [QR Code](https://docs.barcoder.ai/docs/standards/qr-code) symbology, defined and governed by the **GS1 General Specifications** [1][1]. It is not a separate symbology: it uses a standard **QR Code (Model 2)** as standardised in **ISO/IEC 18004** [2][2], with the same position-detection patterns, Reed–Solomon error correction, and 40 version sizes as any other QR Code. What distinguishes GS1 QR Code is a single structural rule: a **FNC1 function character placed in the first position** of the encoded data, flagging that the symbol carries **GS1 Application Identifier (AI)** element strings rather than free text [1][1], [3][3]. This is the same mechanism that turns a generic [Code 128](https://docs.barcoder.ai/docs/standards/code-128) symbol into a [GS1-128](https://docs.barcoder.ai/docs/standards/gs1-128) symbol, or a generic [Data Matrix](https://docs.barcoder.ai/docs/standards/data-matrix) symbol into a [GS1 DataMatrix](https://docs.barcoder.ai/docs/standards/gs1-datamatrix) symbol — the leading FNC1 marker plus the GS1 AI data model — here applied to the QR carrier [1][1]. Because QR Code is the symbology consumers already scan with any smartphone, GS1 QR Code is the GS1 profile most suited to **consumer-facing retail** applications, and it is the natural partner of **GS1 Digital Link**, the GS1 standard for expressing the same identifiers as a web-resolvable URL [4][4]. GS1 QR Code is a central piece of GS1's **"2D barcodes at retail point of sale"** ("Sunrise") initiative — the global migration that aims to have retail point-of-sale systems able to scan 2D codes (GS1 QR Code and [GS1 DataMatrix](https://docs.barcoder.ai/docs/standards/gs1-datamatrix)) alongside the traditional 1D EAN/UPC barcode, often cited with a target around 2027 [1][1], [4][4]. ## History **Underlying symbology lineage** [2][2], [qr-code-ref]: The base symbology, QR Code, was invented in 1994 by Masahiro Hara at Denso Wave and standardised internationally as ISO/IEC 18004 (first edition 2000, current edition 2015). Denso Wave holds the patents but does not enforce them, making QR Code royalty-free worldwide. GS1 QR Code inherits all of that and adds only the GS1 data-formatting conventions on top. **GS1 profile** [1][1]: GS1 (Global Standards One — formed in 2005 by the merger of the Uniform Code Council and EAN International) defines the GS1 QR Code profile within the **GS1 General Specifications**. The profile requires the leading FNC1 marker and constrains the encoded content to the GS1 Application Identifier registry — the same AI registry used by GS1-128, GS1 DataMatrix, and GS1 DataBar. The QR module encoding is unchanged from ISO/IEC 18004; GS1 layers only the data semantics. **GS1 Digital Link and 2D-at-retail** [1][1], [4][4], [8][8]: - **2018 — GS1 Digital Link** standard released, defining a web-URI structure that embeds GTIN and other AIs so a single QR scan can resolve to product information, authentication, or marketing in addition to being parsed at point of sale. - **2020s — "2D barcodes at retail point of sale" ("Sunrise 2027")** programme. GS1 coordinates a global migration so retail POS can read 2D codes (GS1 QR Code and GS1 DataMatrix) alongside the legacy 1D barcode. The explicit GS1-US deadline is that retailers **be capable of scanning 2D barcodes at point of sale by 31 December 2027**, while continuing to read EAN/UPC during the transition; manufacturers are asked to add 2D codes alongside 1D codes through 2027 [8][8]. - **Coverage** — by 2025–2026 the Sunrise 2027 programme has running pilots in **48 countries representing 88 % of world GDP**, with major US retailers (**Walmart, Target, Dillard's, Safeway, Kroger**) setting supplier-readiness deadlines tied to or earlier than the Sunrise target [8][8]. ## Technical specification GS1 QR Code is a **structured-data profile of QR Code (Model 2)** [1][1], [2][2], [3][3]: | Parameter | Value | |---|---| | Base symbology | QR Code Model 2 (ISO/IEC 18004) | | Symbology family | 2D matrix | | Distinguishing feature | **FNC1 in the first data position** | | Data model | GS1 Application Identifiers (AIs) + element strings, OR a GS1 Digital Link URI | | Error correction | Reed–Solomon, levels L/M/Q/H (7–30 %) | | Versions | 40 (sizes 21×21 to 177×177 modules) | | Field separator | FNC1 (function character) after variable-length AI fields | | Symbology identifier | `]Q3` (QR Code with leading FNC1 / GS1 mode) | | Quiet zone | 4 modules on each side | | Variable length | Yes — capacity varies with version and EC level | **The FNC1 rule** [1][1], [3][3]: A QR Code becomes a GS1 QR Code when the **FNC1** function character is encoded in the first position. Compliant scanners report this as the symbology identifier **`]Q3`**, signalling to the receiving application that the data is GS1-formatted and must be parsed by Application Identifier. (For comparison, GS1-128 uses `]C1` and GS1 DataMatrix uses `]d2` for the same role.) **Two encoding styles** [1][1], [4][4]: GS1 QR Code can carry the GS1 AI data in either of two ways: 1. **Bracketless concatenated AI element strings** with the leading FNC1 — the same payload style as GS1-128 and GS1 DataMatrix, parsed entirely by software. 2. **A GS1 Digital Link URI** — the same identifiers expressed as a web URL (e.g. `https://id.gs1.org/01/09521234543213/...`), which both a POS parser and a consumer phone's web browser can act on. This dual-purpose capability is the main reason QR (rather than DataMatrix) is chosen for consumer-facing retail. **Application Identifiers (AIs)** [1][1], [6][6]: An AI is a numeric prefix (2–4 digits) that defines the meaning and format of the field that follows. The AI registry is shared across all GS1 carriers. Common AIs include: | AI | Meaning | Format | |---|---|---| | **(01)** | GTIN (trade item number, GTIN-14 form) | 14 digits, fixed | | **(10)** | Batch / lot number | up to 20 alphanumeric, variable | | **(17)** | Expiration / use-by date | 6 digits YYMMDD, fixed | | **(21)** | Serial number | up to 20 alphanumeric, variable | | **(00)** | SSCC — Serial Shipping Container Code | 18 digits, fixed | **Concatenation and the separator role of FNC1** [1][1], [3][3], [6][6]: A single GS1 QR Code can carry multiple AI element strings back-to-back. Fixed-length fields (such as `(01)` GTIN-14 or `(17)` date) need no separator; variable-length fields (such as `(10)` batch or `(21)` serial) must be terminated by an **FNC1** character when another AI follows. FNC1 therefore does double duty: a flag in the first position, and a field delimiter thereafter. **Worked example** — the playground payload `(01)09521234543213` encodes a single GTIN-14. The parentheses are a **human-readable convention only** — they are not encoded in the symbol; the leading FNC1 and the AI registry tell the parser how to read the field. ## Use cases GS1 QR Code targets **consumer-facing retail and engagement, where the same symbol must serve both a point-of-sale scanner and a smartphone** [1][1], [4][4]: - **2D barcodes at retail point of sale ("Sunrise 2027")** — GS1 QR Code (alongside [GS1 DataMatrix](https://docs.barcoder.ai/docs/standards/gs1-datamatrix)) lets a retail till read GTIN `(01)` plus batch `(10)` and expiry `(17)` from a single 2D code, enabling automatic shelf-life checks, precise recall, and markdown automation that a plain EAN/UPC cannot support. - **GS1 Digital Link / consumer engagement** — a GS1 QR Code carrying a Digital Link URI resolves in a phone browser to product provenance, ingredients, instructions, authentication, or promotions, while the same code still functions at checkout. - **Fresh-food date and recall management** — date and batch AIs in a consumer-scannable code support shelf-life enforcement and targeted recalls. - **Authentication and anti-counterfeiting** — serialised GS1 QR Codes let brand owners and consumers verify individual items. - **Coupons and loyalty** — GS1 AIs in QR support standardised digital coupons. **Why GS1 QR Code is chosen for these contexts** [1][1], [4][4]: - QR is the 2D symbology every consumer smartphone already scans, so it bridges supply-chain data and direct consumer interaction in one symbol. - The Digital Link option makes one code both machine-parseable (POS) and human-actionable (web). - It encodes the standardised AI data model that retail and supply-chain systems already understand. - It is royalty-free, inheriting QR Code's open status. Because GS1 QR Code is QR Code plus formatting rules, **any QR encoder/decoder can produce or read the modules**; GS1 QR Code support specifically means the library understands AI formatting and leading-FNC1 placement [7][7]. **Open-source libraries with explicit GS1-QR support**: | Repo | Language | Stars | License | Last release | Notes | |---|---|---:|---|---|---| | [zxing/zxing](https://github.com/zxing/zxing) | Java (+ many ports) | 34,000 | Apache-2.0 | active 2025 | The de-facto open-source 1D/2D reader. Decodes QR Code and returns the **`]Q3`** symbology identifier when the leading FNC1 marks GS1 mode, so upstream AI parsers can route accordingly [7][7] | | [metafloor/bwip-js](https://github.com/metafloor/bwip-js) | JavaScript | 2,400 | (MIT incl. OFL fonts) | v4.11.1, 28 May 2026 | Translation of Barcode Writer in Pure PostScript (BWIPP). Ships dedicated **`gs1qrcode`** and **`gs1dlqrcode`** encoder modes for GS1 QR Code (AI input) and GS1 Digital Link QR Code respectively [9][9] | | [zint/zint](https://github.com/zint/zint) | C | 771 | BSD-3 (lib) / GPLv3+ (CLI/GUI) | active 2026 | Comprehensive 50+-symbology generator (`zint --barcode=58` for QR Code) with GS1 mode that automatically inserts FNC1, validates Application Identifiers and supports GS1 Digital Link [10][10] | **Other practical encoders/decoders** (no individual stars cited; per `bwip-js`'s BWIPP heritage): - **Python** — `segno`, `qrcode`, and `treepoem` (wraps Barcode Writer in Pure PostScript, which has GS1 QR Code AI support). - **GS1 Digital Link tools** — GS1 and community libraries provide Digital Link URI builders/resolvers that pair with GS1 QR Code generation. - **Scanners and mobile SDKs** — every commercial 2D imager (Cognex, Datalogic, Honeywell, Zebra) decodes GS1 QR Code; commercial mobile SDKs (Scandit, Scanbot, Dynamsoft) parse AI fields and Digital Link URIs. **Open standards documentation**: - [GS1 General Specifications / GS1 QR Code guideline][1] — define the GS1 QR Code profile, the FNC1 rule, and the AI registry. - [GS1 Digital Link][4] — the web-URI standard that pairs with GS1 QR Code. - [ISO/IEC 18004:2015][2] — the canonical specification of the underlying QR Code symbology. ## Comparison **vs. [QR Code](https://docs.barcoder.ai/docs/standards/qr-code) (the base symbology)** — Plain QR Code can encode arbitrary data (URLs, text, payment payloads such as EMVCo QR). GS1 QR Code is a **constrained application of it**: same modules, same EC, but a mandatory leading FNC1 and the strict GS1 AI data model (or a GS1 Digital Link URI). Choose plain QR for arbitrary payloads and the national EMVCo-based payment QR standards; choose GS1 QR Code when the data must be standardised GS1 AI element strings or a GS1 Digital Link. **vs. [GS1 DataMatrix](https://docs.barcoder.ai/docs/standards/gs1-datamatrix)** — Both are 2D GS1 AI carriers using leading FNC1 and the same AI registry. GS1 DataMatrix (`]d2`) dominates regulated healthcare/pharma serialisation — smallest footprint, established line equipment, 30 % damage tolerance. GS1 QR Code (`]Q3`) is favoured for consumer-facing retail because consumers already scan QR with their phones, and it pairs with GS1 Digital Link to be both POS-parseable and web-resolvable. **vs. [GS1-128](https://docs.barcoder.ai/docs/standards/gs1-128)** — Both encode the same AI structure with leading FNC1, but GS1-128 is 1D linear for pallets and outer packaging, while GS1 QR Code is 2D for consumer-facing items and engagement. **vs. [GS1 DataBar](https://docs.barcoder.ai/docs/standards/gs1-databar)** — GS1 DataBar is a compact 1D family carrying GS1 AIs at point of sale (loose produce, coupons). GS1 QR Code carries the same data model in 2D with far higher capacity and the consumer-scannable / Digital Link advantage. The **parentheses in `(01)`, `(17)`, `(10)` are never encoded in the symbol** [1][1], [6][6] — they appear only in human-readable text; the parser reconstructs field boundaries from the AI registry (fixed-length AIs) and FNC1 separators (after variable-length AIs). **One QR code, two audiences** [4][4] — a GS1 QR Code carrying a GS1 Digital Link URI works at the supermarket till (parsed as GS1 AI data) and in a shopper's phone browser (resolved as a web link) from the same scan. This dual role is the headline reason QR was chosen as a retail 2D carrier alongside DataMatrix. **The same FNC1 idea spans four GS1 carriers** [1][1] — GS1-128 (`]C1`), GS1 DataMatrix (`]d2`), GS1 QR Code (`]Q3`), and GS1 DataBar all use a leading FNC1 plus the shared AI registry. Learn the data model once and it transfers across every GS1 symbology. **A 2027 deadline backed by 88 % of world GDP.** The Sunrise 2027 programme has running pilots in **48 countries representing 88 % of world GDP**, and the GS1-US target is that all retail POS scanners be able to read 2D codes (GS1 QR Code / GS1 DataMatrix) by **31 December 2027** [8][8]. Few standards arrive with that scale of pre-committed industrial demand. **The US grocery aisle is the migration's lead arrow.** Major US retailers — **Walmart, Target, Dillard's, Safeway, Kroger** — have published supplier-readiness deadlines tied to Sunrise 2027, making the supermarket shelf the most aggressive surface on which a single GS1 QR Code must keep working at both an industrial scanner *and* a shopper's phone [8][8]. ## Status **Active and strategically central to GS1's retail roadmap** [1][1], [4][4]: - **GS1 General Specifications** maintain GS1 QR Code as a current, core barcode standard. - The underlying **ISO/IEC 18004:2015** QR Code spec is current and royalty-free. - **GS1 Digital Link** (2018) pairs with GS1 QR Code to make one code both machine- and human-actionable. - The **"2D barcodes at retail point of sale" ("Sunrise")** programme — often cited with a ~2027 horizon — is driving global POS readiness for GS1 QR Code and GS1 DataMatrix. **Strategic context**: - GS1 maintains GS1 QR Code in parallel with [GS1-128](https://docs.barcoder.ai/docs/standards/gs1-128), [GS1 DataMatrix](https://docs.barcoder.ai/docs/standards/gs1-datamatrix), and [GS1 DataBar](https://docs.barcoder.ai/docs/standards/gs1-databar); all four carry the same AI data model, and the choice is driven by available space, scanner infrastructure, and whether a consumer-scannable / web-resolvable code is wanted. - GS1 QR Code is positioned as the **consumer-facing** 2D GS1 carrier, with GS1 DataMatrix the regulated/serialisation carrier. - No deprecation is planned. ## Sources [1]: https://www.gs1.org/standards/barcodes/qr-code [2]: https://www.iso.org/standard/62021.html [3]: https://en.wikipedia.org/wiki/QR_code [4]: https://www.gs1.org/standards/gs1-digital-link [6]: https://www.gs1.org/standards/barcodes/application-identifiers [7]: https://github.com/zxing/zxing [8]: https://www.gs1us.org/industries-and-insights/by-topic/sunrise-2027 [9]: https://github.com/metafloor/bwip-js [10]: https://github.com/zint/zint [qr-code-ref]: https://docs.barcoder.ai/source/standards/qr-code 1. [GS1 QR Code — GS1 Standards][1] 2. [ISO/IEC 18004:2015 — QR Code specification][2] 3. [QR Code — Wikipedia][3] 4. [GS1 Digital Link — GS1 Standards][4] 6. [GS1 Application Identifiers — GS1][6] 7. [zxing/zxing — GitHub][7] 8. [Sunrise 2027 — GS1 US][8] 9. [metafloor/bwip-js — GitHub][9] 10. [zint/zint — GitHub][10] ## Deployments _No country reports mention this standard by name._ ## Regions / aggregations not mapped to a single country - Universal ## Deployments _No country reports mention this standard by name._ ## Regions / aggregations not mapped to a single country - Universal