Walk nested mappings and sequences, emit one leaf per unambiguous path, and preserve scalar types in a reviewable JSON object.
Inputs are limited to 1 MiB and stay in this browser tab.
Nothing is placed in a URL, account, preset, or remote log.
Strict, bounded, local processing
Flattening changes structure and is not generally reversible. The output uses escaped path segments so dots or brackets inside source keys cannot collide silently.
Mapping keys become path segments and sequence positions become indexes. Empty mappings, empty sequences, and scalar roots receive explicit representations so the result does not silently omit a meaningful value.
The fixed path representation escapes separator characters so two different source paths cannot collapse into the same output member.
Comments, anchors, collection presentation, and some container distinctions are not leaf values. Keep the source document and treat the flattened map as a generated index, audit artifact, or integration input.
