GS1 Digital Link Conformance

Daily automated run of the official GS1 Digital Link Resolver test suite against the Closient resolver. We don't reimplement the tests — we run GS1's own JavaScript and report exactly what it says.

No conformance run on file yet. The daily scheduled run will populate this page. Check back after the next run.

Test it yourself

Every claim on this page can be checked from any terminal — no account, no API key. The commands below run against www.closient.com using GS1's demo GTIN 09506000164908.

HTML redirect (what a consumer scan does)

curl -I https://www.closient.com/01/09506000164908

Returns the 30x redirect plus RFC 8288 Link headers, including rel="linkset".

Linkset via content negotiation

curl -s -H "Accept: application/linkset+json" https://www.closient.com/01/09506000164908

Returns the RFC 9264 linkset document instead of redirecting.

Linkset via query string

curl -s "https://www.closient.com/01/09506000164908?linkType=linkset"

Same linkset, requested with ?linkType=linkset — no Accept header needed.

JSON-LD structured data

curl -s -H "Accept: application/ld+json" https://www.closient.com/01/09506000164908

Returns a schema.org + GS1 Web Vocabulary JSON-LD document for the product.

Resolver description file

curl -s https://www.closient.com/.well-known/gs1resolver

The GS1-required description of this resolver's capabilities.

How other resolvers compare

Facts verified 2026-06-11 — verify yourself with the commands above, pointed at each resolver. Notably, id.orcascan.com does not return application/linkset+json.

Capability	Closient	id.gs1.org	id.gs1uk.org	id.orcascan.com
Accept: application/linkset+json returns an RFC 9264 linkset	Yes 200 with Content-Type: application/linkset+json	Yes 200 with Content-Type: application/linkset+json	Untested No publicly resolvable demo GTIN found; tested GTINs return 404	No application/linkset+json is not returned
Accept: application/ld+json returns JSON-LD	Yes 200 with Content-Type: application/ld+json	Partial 200, but labelled Content-Type: application/json	Untested No publicly resolvable demo GTIN found	No Not observed
RFC 8288 Link headers on redirect, incl. rel="linkset"	Yes Full Link header set; rel="linkset" points at the linkset	Partial Rich Link header (CURIE rels like gs1:pip) but no rel="linkset" observed	Untested No publicly resolvable demo GTIN found	No Not observed
Public, continuously updated conformance results page	Yes This page — the official GS1 suite, run daily	No Not published	No Not published	No Not published
/.well-known/gs1resolver resolver description file	Yes 200, JSON description of this resolver	Yes 200 with Content-Type: application/ld+json	Partial File present but contains unedited GS1 Resolver CE template placeholders (resolverRoot https://id.mydomain.org, contact “My Organisation”)	No 404

Test source: gs1/GS1DL-resolver-testsuite — the unmodified JavaScript published by GS1 at https://ref.gs1.org/test-suites/resolver/. We run it in a headless browser against our resolver once a day and persist the result. No tests are reimplemented.

Want to run the suite against any GS1 Digital Link URI right now? Try the interactive test page.