JSON random sample rows
ClientDraw a random subset of records for demos, tests, or spot checks.
Learn more: sampling
Uses Math.random—fine for mocks, not cryptographic sampling.
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 shuffle array — Randomly shuffle a JSON array in the browser—Fisher–Yates, new order each click. once JSON text parses on this page.
- JSON slice array — Take a slice of a JSON array by start and optional end index—like Array. 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 formatter — JSON format online: pretty-print, minify, validate, escape, download . once JSON text parses on this page.
Common use cases
- Draw a random subset of records for demos, tests, or spot checks.
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 shuffle array
ClientRandomly shuffle a JSON array in the browser—Fisher–Yates, new order each click.
JSON slice array
ClientTake a slice of a JSON array by start and optional end index—like Array.slice.
JSON take first N
ClientKeep only the first N elements of a JSON array—non-negative count, local only.
JSON formatter
ClientJSON format online: pretty-print, minify, validate, escape, download .json.