JSON Viewer & Formatter
Format, validate, and minify JSON instantly. Check JSON-LD structured data, debug API responses, or clean up SEO tool exports with a fast, browser-based JSON viewer.
Input
Output
How to Use the JSON Viewer
Paste your JSON into the left panel. Click Format to add indentation and line breaks, or Minifyto remove all whitespace. If there's a syntax error, you'll see a clear message telling you what went wrong.
Why JSON Matters for SEO
JSON plays an important role in modern SEO. It's used for structured data, API responses, and data exchanged between many SEO tools.
Structured Data (JSON-LD)
Google recommends JSON-LD as its preferred format for structured data. Whether you're marking up Articles, Products, or FAQs, one small mistake, like a missing comma or extra bracket, can prevent search engines from understanding your structured data correctly and may affect your eligibility for rich results. Paste your JSON-LD here to catch errors before they go live.
SEO Tool Exports
Many SEO tools, including crawlers, rank trackers, and site auditors, export data in JSON format. The Sitemap to JSON Converter turns your XML sitemaps into structured JSON that you can inspect here. Google Search Console also offers JSON exports for performance reports and coverage data.
API Responses
When integrating SEO platforms via APIs (for pulling keyword rankings, backlink data, or crawl results), the response is almost always JSON. Formatting these responses helps you understand the data structure before writing code to parse it.
Common JSON Mistakes
- Trailing commas. JSON does not allow trailing commas after the last item in an object or array. This is the most frequent validation error.
- Unquoted keys. Unlike JavaScript objects, JSON requires all keys to be wrapped in double quotes.
- Mismatched brackets. Missing or extra braces () or brackets ([]) will prevent the JSON from being parsed.
- Single quotes instead of double. JSON only accepts double quotes for strings and keys.
Example: Validating JSON-LD Structured Data
This valid JSON-LD snippet implements an FAQPage schema. Paste it into the viewer and click Format to see it with proper indentation. Use the Sitemap to JSON Converter to bring your sitemaps into this tool for inspection.
Frequently Asked Questions
Why do SEOs need a JSON viewer?
SEOs use JSON for structured data, API responses, and SEO tool exports. This tool helps you validate JSON, identify syntax errors, and format data before deployment.
What is the difference between Format and Minify?
Format adds indentation and line breaks to make JSON human-readable. Minify removes all whitespace to produce the smallest possible file size for storage or transmission. Both produce valid JSON.
Can this tool validate JSON-LD structured data?
It validates the JSON syntax, but not the schema semantics. For example, it will catch a missing comma but will not tell you if your @type is misspelled. Use Google's Rich Results Test for semantic validation of structured data.
Is JSON the same as JSON-LD?
JSON-LD (JSON for Linked Data) is a specific JSON format used for structured data on the web. It is valid JSON, but not all JSON is JSON-LD. JSON-LD follows the schema.org vocabulary and includes specific context and type fields.
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