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n8n-nodes-json-sanitizer

v0.1.4

Published

n8n community node for JSON sanitization and normalization

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Links

Git

Maintainers

devwithmjdevwithmj

Keywords

n8n-community-node-packagen8njsonsanitizernormalizationrepairautomationworkflow

Readme

n8n-nodes-json-sanitizer

This is an n8n community node. It provides a JSON Sanitizer for cleaning and normalizing JSON from various input formats.

The JSON Sanitizer node can handle:

  • JSON strings with BOM (Byte Order Mark)
  • Markdown code fences wrapping JSON
  • Doubly escaped JSON strings
  • Trailing commas
  • JavaScript-style comments (// and /* */)
  • Inconsistent line breaks
  • Already parsed JSON objects
  • Smart Repair: Automatically fixes malformed JSON using the jsonrepair library

Architecture

This project follows a clean layered architecture that separates concerns for better maintainability and testability:

  • Types Layer: Centralized type definitions and interfaces
  • Services Layer: Business logic and n8n integration logic, utilizing the jsonrepair library for advanced JSON repair functionality
  • Configuration Layer: UI properties and node metadata
  • Presentation Layer: Thin n8n integration layer

For detailed architecture documentation, see nodes/JsonSanitizer/README.md.

n8n is a fair-code licensed workflow automation platform.

Installation Operations Credentials Compatibility Usage Resources Version history

Installation

Follow the installation guide in the n8n community nodes documentation.

Operations

The JSON Sanitizer node supports the following operations:

  • Sanitize JSON: Clean and normalize JSON input from various formats
  • Output modes:
    • Parsed Object: Return the parsed JSON object
    • Cleaned String: Return the sanitized JSON string
    • Both: Return both the parsed object and metadata
    • Smart Repair: Automatically fix malformed JSON using advanced repair techniques

Credentials

No credentials required.

Compatibility

  • Minimum n8n version: 1.0.0
  • Tested on n8n 1.x

Dependencies

This node uses the following external dependencies:

  • jsonrepair: A robust JSON repair library for automatically fixing malformed JSON strings

Usage

  1. Add the JSON Sanitizer node to your workflow
  2. Configure the input field containing the JSON data
  3. Choose the desired output mode
  4. Set an output field name
  5. Optionally configure error handling behavior

The node supports dot notation for nested fields (e.g., body.content) and can handle both string and object inputs.

Resources

Version history

  • 0.1.0: Initial release with basic JSON sanitization features
  • 0.1.1: Refactored to clean layered architecture with improved maintainability
  • 0.1.2: Switched to jsonrepair for robust repair; updated tests and improved fallback for unparseable input.
  • 0.1.3: Improved JSON Sanitizer robustness with multi-stage parsing and repair, clearer error diagnostics, and reliable handling of bad control characters and malformed JSON.
  • 0.1.4: Fixed JSON sanitization error caused by overly aggressive comment removal and poor control character handling - URLs with // are now preserved correctly, unescaped control characters are handled gracefully, and malformed JSON repair is more robust