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HTTP Content Negotiation

Match Accept, Accept-Language or Accept-Encoding against server offers, showing q-values, exclusions and selected representation.

content-negotiationLOCAL WORKSPACE

1. Configure and explore

Inputs stay in this tab; no browser persistence, page-URL encoding or network requests.

q: 0–1, up to 3 decimal places; 0 excludes. Supports media parameters, basic language prefix filtering and identity encoding. No extended language filtering, coding chains or Accept extension parameters.

2. Results and interpretation

Choose a sample, fill the fields or explore the flow.

A local deterministic subset: basic language filtering, media parameters and q-values; no live server, Vary or cache behavior is tested.

Data / rules date: 2026-10-21 · Official source

How to use this tool

Choose a header family, enter its field value and one concrete server offer per line. Omitted and empty encoding headers differ.

When not to use it

A local deterministic subset: basic language filtering, media parameters and q-values; no live server, Vary or cache behavior is tested.

Read the guide →