demo · v139
MIME Classifier
Chrome v139 matches the HTTP spec: any +json suffix triggers JSON handling. Try a MIME type and see how each engine classifies it.
v139 (spec-compliant)
—
pre-v139 (whitelist)
—
the rule
// v139 (HTTP spec, RFC 6838 §4.2.8):
// any "+json" suffix or these:
// application/json, text/json
// pre-v139 whitelist (incomplete):
// application/json, application/manifest+json,
// application/ld+json, application/geo+json, ...