Project · 2025

JSONL Studio

A browser-based JSON Lines editor focused on recursive dataset inspection, schema pruning and privacy-preserving local processing.

HTMLJavaScriptJSONL

Why it exists

JSONL Studio started during a research session where existing tools did not provide the desired balance of visual inspection, nested exploration and client-side privacy. It helps inspect and prune JSONL datasets directly in the browser.

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Architecture

  • Files are loaded through drag and drop.
  • JSONL rows are parsed line by line.
  • Nested objects and arrays are represented as interactive entry points.
  • A modal stack lets users explore deeply nested structures and return step by step.
  • Exports are generated locally from the filtered schema.

Key features

  • Recursive table view.
  • Object and array badges.
  • Granular pruning at root and nested levels.
  • Modal stack navigation.
  • 100% client-side processing.

Design decisions

The project treats nested data as a navigation problem rather than a formatting problem, making dataset cleanup faster without sending data to a server.

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