JSONLint

JSONLint

JSONLint is a lightweight web tool and API for validating JSON data. It checks for syntax errors and validates against schemas. Useful for checking JSON configs, API payloads, and debugging issues with JSON serialization.
JSONLint image
json validator linter

JSONLint: Lightweight JSON Validation Tool

JSONLint is a lightweight web tool and API for validating JSON data. It checks for syntax errors and validates against schemas. Useful for checking JSON configs, API payloads, and debugging issues with JSON serialization.

What is JSONLint?

JSONLint is a popular online JSON validator and formatter. It provides an easy-to-use web interface and API for validating and viewing JSON data. Some key features:

  • Checks JSON syntax and highlights errors
  • Validates against JSON Schema
  • Formats and prettifies JSON for easy viewing
  • Supports raw JSON input via textbox or file upload
  • Offers URL API for validating JSON from any app or website
  • Open source and lightweight - runs client-side in the browser

JSONLint is useful for web developers working with JSON data, config files, or APIs. It's helpful for validating JSON schemas and payloads to ensure syntactically correct format before sending to API endpoints for processing. The colorized output makes it easy to spot issues. It works as a client-side standalone app so doesn't require server access or setup, and the API allows integrating validation into any workflow. Overall JSONLint simplifies checking and troubleshooting JSON data across applications.

JSONLint Features

Features

  1. Validates JSON data against JSON schema
  2. Checks for syntax errors
  3. Available as web tool and API
  4. Lightweight and fast

Pricing

  • Open Source

Pros

Easy to use

Free

Open source

Wide browser support

Cons

Limited schema support

No auto-fix for errors

No advanced validation features


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