NDJSON/JSONL Viewer

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JSONL Input
Paste JSONL content or load a file to get started

What This Tool Does

NDJSON/JSONL Viewer is built for deterministic developer and agent workflows.

Parse and view JSONL (newline-delimited JSON) with interactive table, filtering, sorting, and export.

Use How to Use for execution steps and FAQ for constraints, policies, and edge cases.

Last updated:

This tool is provided as-is for convenience. Output should be verified before use in any production or critical context.

Agent Invocation

Best Path For Builders

Browser workflow

Runs instantly in the browser with private local processing and copy/export-ready output.

Browser Workflow

This tool is optimized for instant in-browser execution with local data handling. Run it here and copy/export the output directly.

/jsonl-viewer/

For automation planning, fetch the canonical contract at /api/tool/jsonl-viewer.json.

How to Use NDJSON/JSONL Viewer

  1. 1

    Load JSONL/NDJSON data

    Paste your JSONL data (one JSON object per line) or upload a .jsonl/.ndjson file. The viewer auto-detects the format.

  2. 2

    Convert to interactive table

    The tool parses each line and renders an interactive table where each row is one JSON object and columns are detected from keys.

  3. 3

    Filter and search

    Use the filter panel to search by column values, regex patterns, or range queries (e.g., timestamp > 2026-01-01). Results update in real-time.

  4. 4

    Sort and export

    Click column headers to sort by any field. Export filtered results as CSV, JSON array, or back to JSONL format.

Frequently Asked Questions

What is NDJSON/JSONL Viewer?
NDJSON/JSONL Viewer parses and displays newline-delimited JSON data in an interactive table format. It supports filtering, sorting, and exporting, making it ideal for exploring log files and event streams.
How do I use NDJSON/JSONL Viewer?
Paste your JSONL or NDJSON data into the input field. The tool parses each line as a separate JSON object and displays them in a sortable, filterable table. You can search, sort by any column, and export results.
Is NDJSON/JSONL Viewer free?
Yes. This tool is free to use with immediate access—no account required.
Does NDJSON/JSONL Viewer store or send my data?
No. All processing happens entirely in your browser. Your log data never leaves your device — nothing is sent to any server.
What is the difference between JSONL and NDJSON?
JSONL (JSON Lines) and NDJSON (Newline Delimited JSON) are the same format — one JSON object per line, separated by newlines. Both are commonly used for log files, data streaming, and bulk data processing.