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Json Visualizer

A command-line devtools toolkit for working with JSON data. Check, validate, generate, format, lint, explain, convert, diff, preview, fix, and report on JSON structures — all from your terminal with persistent logging and history tracking.

Why Json Visualizer?

• Works entirely offline — your data never leaves your machine
• No external dependencies or accounts needed
• Every action is timestamped and logged for full auditability
• Export your history to JSON, CSV, or plain text anytime
• Simple CLI interface with consistent command patterns

Commands

Each data command (check, validate, generate, etc.) works in two modes:

• With arguments — logs the input with a timestamp and saves to its dedicated log file
• Without arguments — displays the 20 most recent entries from that command's log

Data Storage

All data is stored locally in ~/.local/share/json-visualizer/. The directory structure:

• check.log, validate.log, generate.log, etc. — per-command log files
• history.log — unified activity log across all commands
• export.json, export.csv, export.txt — generated export files

Set the DATA_DIR environment variable in the script to change the storage location.

Requirements

• Bash 4.0+ (uses set -euo pipefail)
• Standard Unix tools: date, wc, du, tail, grep, sed, cat
• No external packages or network access required

When to Use

1. Validating API responses — pipe JSON output through json-visualizer validate to quickly verify structure before processing
2. Formatting messy JSON — use json-visualizer format to prettify minified or poorly-indented JSON files for code review
3. Comparing JSON configs — run json-visualizer diff to track changes between configuration versions across deployments
4. Generating boilerplate — use json-visualizer generate and json-visualizer template to scaffold JSON structures for new projects
5. Auditing JSON workflows — use json-visualizer stats, json-visualizer recent, and json-visualizer export to review your JSON processing history

Examples

# Check a JSON string for issues
json-visualizer check '{"name": "test", "value": 42}'

# Validate a JSON file's structure
json-visualizer validate @config.json

# Format minified JSON for readability
json-visualizer format '{"a":1,"b":2,"c":[3,4,5]}'

# Lint JSON for style problems
json-visualizer lint '{"Name":"test"}'

# View statistics across all commands
json-visualizer stats

# Export all history as CSV
json-visualizer export csv

# Search for a specific term in all logs
json-visualizer search "config"

# View recent activity
json-visualizer recent

# Health check
json-visualizer status

Output

All commands output structured text to stdout. You can redirect output to a file:

json-visualizer report mydata > report.txt
json-visualizer export json

Configuration

The data directory defaults to ~/.local/share/json-visualizer/. Modify the DATA_DIR variable at the top of script.sh to change the storage path.

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