Free tool
Format, indent, prettify, and inspect raw JSON payloads, API responses, and Schema.org structured data locally in your browser.
JavaScript Object Notation (JSON) is the universal data interchange standard powering modern commerce integrations. From Shopify Storefront API GraphQL responses and WooCommerce REST endpoints to ERP inventory feeds and Schema.org JSON-LD scripts, structured JSON payload inspection is an essential daily development workflow.
Many free online JSON formatters transmit your data to remote logging servers, introducing severe security and compliance liabilities when inspecting payloads containing sensitive customer addresses, order details, or API tokens. This utility runs 100% in your local browser runtime via native JSON parser engines, ensuring zero data transmission or storage.
Prettifying minified JSON strings into structured, collapsible 2-space or 4-space hierarchies allows engineers to quickly spot syntax errors, misplaced commas, unescaped quotes, and malformed nested objects when debugging webhook payloads and catalog feeds.
Yes. All parsing, indentation, and formatting operations execute entirely within your client-side browser runtime. No data is transmitted to our servers or stored in cookies.
Formatting (prettifying) adds indentation, line breaks, and whitespace to make dense data easily human-readable. Minification removes all unnecessary whitespace and line breaks to compress payload byte size for faster network transfer.
JSON specification (RFC 8259) requires strict syntax: keys must be enclosed in double quotes (not single quotes), trailing commas after the last array or object element are prohibited, and special characters must be properly escaped.
JSON-LD (JavaScript Object Notation for Linked Data) is a specialized format that includes contextual Schema.org vocabularies (@context, @type) to describe web entities (such as Products, Offers, and BreadcrumbLists) to search engines.
Validate raw JSON strings, identify syntax error line numbers, and inspect Schema.org structured data payloads for compliance.
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