Http Structured Fields Parser
Parse dictionary/list/item, inner lists, parameters, typed numbers/tokens/strings/bytes/booleans and RFC 9651 dates/display strings. Decimals retain exact source text; duplicate keys/parameters keep their last value in original key order. Syntax only, not field-specific semantics. 32 KiB / 1,000 nodes / 200 members / 100 inner-list items / 50 parameters.
Enabling local controls…
Results
Review the settings and run. Editing inputs clears old results.
Processing model and limits
Parse dictionary/list/item, inner lists, parameters, typed numbers/tokens/strings/bytes/booleans and RFC 9651 dates/display strings. Decimals retain exact source text; duplicate keys/parameters keep their last value in original key order. Syntax only, not field-specific semantics. 32 KiB / 1,000 nodes / 200 members / 100 inner-list items / 50 parameters.
Data and model checked: RFC 9651 ↗Source tool 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
Parse dictionary/list/item, inner lists, parameters, typed numbers/tokens/strings/bytes/booleans and RFC 9651 dates/display strings. Decimals retain exact source text; duplicate keys/parameters keep their last value in original key order. Syntax only, not field-specific semantics. 32 KiB / 1,000 nodes / 200 members / 100 inner-list items / 50 parameters.