JSON array length
ClientCount elements without loading full stats—pairs with slice and take tools.
Learn more: array length
Root must be an array; nested lengths are not counted.
Local processing
Parsing and output formatting run entirely in your browser—nothing is uploaded for this transform.
Input
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Nearby workflows on Toolcore
- JSON statistics — Depth, key counts, object/array totals, and value-type breakdown—local only. once JSON text parses on this page.
- JSON take first N — Keep only the first N elements of a JSON array—non-negative count, local only. once JSON text parses on this page.
- JSON skip first N — Skip the first N items of a JSON array—non-negative count, browser-only. 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
- Count elements without loading full stats—pairs with slice and take tools.
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 statistics
ClientDepth, key counts, object/array totals, and value-type breakdown—local only.
JSON take first N
ClientKeep only the first N elements of a JSON array—non-negative count, local only.
JSON skip first N
ClientSkip the first N items of a JSON array—non-negative count, browser-only.
JSON formatter
ClientJSON format online: pretty-print, minify, validate, escape, download .json.