JSON compact array
ClientTighten sparse top-level lists after filtering or mapping.
Learn more: compact arrays
Root must be an array; false and 0 are kept.
Local processing
Parsing and output formatting run entirely in your browser—nothing is uploaded for this transform.
Input
?
Paste JSON, then read transformed output below.
Nearby workflows on Toolcore
- JSON filter nulls from array — Remove null entries from a root JSON array—does not walk nested objects. once JSON text parses on this page.
- JSON drop nulls — Delete JSON null from objects and arrays recursively—local cleanup before export. once JSON text parses on this page.
- JSON dedupe array — Remove duplicate elements from a JSON array—first occurrence wins, order preserved. once JSON text parses on this page.
- JSON formatter — JSON format online: pretty-print, minify, validate, escape, download . once JSON text parses on this page.
Common use cases
- Tighten sparse top-level lists after filtering or mapping.
Common mistakes to avoid
Invalid JSON
Fix parse errors before expecting output.
FAQ
Is data uploaded?
No—all parsing and transforms run locally.
How is this different from jq?
This page focuses on one deterministic task without a filter language.
More tools
Related utilities you can open in another tab—mostly client-side.
JSON filter nulls from array
ClientRemove null entries from a root JSON array—does not walk nested objects.
JSON drop nulls
ClientDelete JSON null from objects and arrays recursively—local cleanup before export.
JSON dedupe array
ClientRemove duplicate elements from a JSON array—first occurrence wins, order preserved.
JSON formatter
ClientJSON format online: pretty-print, minify, validate, escape, download .json.