← back to v148 · idna-contextj-rules

conformance · v148

v148 · idna-contextj-rules — conformance probe

5 assertions drawn from the spec. Each is a single contract the spec text makes. Pass/fail reflects what this browser executed; blocked means the contract was not run because it needs user mediation, hardware, or another unavailable precondition. Open the page in Chrome stable / canary / Firefox / Safari to compare.

browser: spec: https://url.spec.whatwg.org/#idna chromestatus: #6295810820145152 generated 2026-06-01T08:14:38Z by conformance-author-v1-subagent
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id contract kind verdict detail
url-constructor-exists The URL constructor is the entry point that performs IDNA processing. exists
url-host-encoded A non-ASCII hostname is punycode-encoded in URL.host (basic IDNA still works). spec ↗ script
url-host-zwj-rejected A zero-width joiner not satisfying ContextJ rules causes URL parsing to fail. spec ↗ throws
url-host-zwnj-rejected A zero-width non-joiner outside a script context is rejected per ContextJ Rule A.1. spec ↗ throws
url-ascii-host-untouched An ASCII-only hostname is not altered by IDNA processing. script