JSON Viewer Validator

This tool accepts JSON input and returns a structured assessment of its validity along with a human friendly, formatted representation. It supports optional schema validation to ensure the payload conforms to a predefined model. Conceptually, the system parses the input into an internal tree, checks syntax, and then traverses the tree to produce pretty output. It is valuable for API developers, QA engineers, and data scientists who need to verify payloads before transmission or storage. The tool distinguishes between syntax errors and schema mismatches, providing precise locations and paths to aid rapid fixes. Unique value lies in combining quick syntax checks, optional schema validation, and a clean, readable render of the JSON for review and logs. Core features include error reporting with location data, formatted output, and optional schema checks that help prevent integration issues and data quality problems. Use cases include validating API responses, test payloads, and configuration files, especially in CI pipelines or local debugging sessions. The approach emphasizes deterministic formatting, clear error messages, and easy automation through machine readable results.