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Accept Header Builder

Generate an Accept preference, not a promise about server response. q is0–1 with up to3 decimals. Charset is a media-type parameter on the primary range, not Accept-Charset. At most30 fallback ranges/20 parameters each; quoted commas supported, duplicate parameters rejected; no negotiation or request occurs.

accept-header-builderLOCAL WORKSPACE

Enabling local controls…

Inputs and settings

Processed in this tab without uploading or storing inputs. Each text field is limited to 32 KiB and complete output to 1 MiB; additional format and model limits apply.

Results

Review the settings and run. Editing inputs clears old results.

Processing model and limits

Generate an Accept preference, not a promise about server response. q is0–1 with up to3 decimals. Charset is a media-type parameter on the primary range, not Accept-Charset. At most30 fallback ranges/20 parameters each; quoted commas supported, duplicate parameters rejected; no negotiation or request occurs.

Data and model checked: RFC9110 Accept ↗ToolHub source controls ↗

How to use this tool

Load the example, confirm field units and processing rules, then run locally. Editing any input clears the old result. Copy or download the complete output explicitly.

When not to use it

Generate an Accept preference, not a promise about server response. q is0–1 with up to3 decimals. Charset is a media-type parameter on the primary range, not Accept-Charset. At most30 fallback ranges/20 parameters each; quoted commas supported, duplicate parameters rejected; no negotiation or request occurs.