JSON workflow chooser

JSON tools for API-ready data

Start from the failure mode: fix broken JSON, validate an API payload, convert data or inspect nested structures.

User problem

Start with JSON Validator

My JSON is broken

Start by finding the parse failure, then repair and validate before reuse.

Best first tool

JSON Validator

Validate strict JSON, explain parse failures and create a repair candidate.

What it checks

Syntax errors
Trailing commas
Unquoted keys
Truncated payloads

When to use next tool

JSON RepairReview original and repaired JSON side by side.JSON FormatterPretty-print valid JSON for review.

Open JSON Validator

User problem

Start with Schema Checker

I need to check an API payload

After syntax passes, validate required fields and types before sending data downstream.

Best first tool

Schema Checker

Validate JSON data against a JSON Schema and get readable fix steps.

What it checks

Required fields
Type mismatches
Enum values
Nested object shape

When to use next tool

JSON Schema ValidatorUse the dedicated schema validator for common local schema checks.JSON Schema GeneratorInfer a starter schema from a sample payload.

Open Schema Checker

User problem

Start with JSON to CSV

I need to convert JSON for spreadsheets or imports

Use conversion tools after the payload parses cleanly and the data shape is known.

Best first tool

JSON to CSV

Convert arrays or objects into CSV for spreadsheet or importer workflows.

What it checks

Array/object shape
Export columns
Spreadsheet readiness
Import preparation

When to use next tool

CSV to JSONConvert CSV rows back into JSON arrays.CSV Data Quality CheckerRun a CSV preflight after conversion.

Open JSON to CSV

User problem

Start with JSON Minifier

I need compact JSON for transport, fixtures or embeds

Minify only after the payload parses cleanly so whitespace changes do not hide syntax errors.

Best first tool

JSON Minifier

Remove unnecessary whitespace from valid JSON without changing data.

What it checks

Strict parse success
Whitespace-only reduction
Compact output
Copy-ready payloads

When to use next tool

JSON ValidatorValidate strict JSON before or after minifying.JSON FormatterPretty-print the same payload again when review is needed.

Open JSON Minifier

User problem

Start with JSON Viewer

I need to inspect nested JSON

When the payload is valid but hard to read, switch to tree and compact views.

Best first tool

JSON Viewer

Explore nested objects and arrays as a collapsible tree.

What it checks

Nested objects
Array shape
Readable exploration
Copy-safe review

When to use next tool

JSON Tree ViewerUse the dedicated tree route for structure inspection.JSON MinifierCompress valid JSON after review.

Open JSON Viewer

Tool directory

Browse every JSON tool

Use the directory when you already know the JSON task: validate syntax, repair broken output, format or minify payloads, inspect a tree, generate schemas or convert records to CSV.

JSON

JSON Validator

Validate JSON syntax, repair common issues, format output and inspect data safely in your browser.

Best for

checking copied API payloads, config snippets and generated JSON before another system reads them.

Strict JSON syntaxFormatted output

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JSON

JSON Repair

Repair broken JSON from APIs, LLM output, config files and copied snippets.

Best for

turning messy JSON-like text into a reviewable JSON candidate without uploading the pasted content.

Common broken JSON patternsRepair candidate output

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JSON

JSON Formatter

Format messy JSON into readable, indented output.

Best for

making valid compact JSON readable before review, debugging or documentation.

Strict parse successTwo-space indentation

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JSON

JSON Minifier

Minify JSON by removing whitespace without changing its data.

Best for

compressing valid JSON for transport, fixtures or embeds while preserving the original data.

Strict parse successWhitespace-only reduction

Open tool

JSON

JSON Viewer

Inspect valid JSON with a compact, expand-on-demand viewer for quick top-level review.

Best for

quickly inspecting valid JSON values and confirming top-level object or array structure.

Strict parse successExpandable object nodes

Open tool

JSON

JSON Tree Viewer

View JSON as an expandable tree for nested objects and arrays.

Best for

exploring deeply nested JSON trees where parent-child structure matters more than formatting.

Nested object hierarchyArray item branches

Open tool

Schema

JSON Schema Validator

Validate JSON against a JSON Schema and see readable error explanations.

Best for

checking whether JSON data matches a contract before it reaches an API, queue or import pipeline.

Required fieldsField types

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Schema

JSON Schema Generator

Generate JSON Schema from sample JSON data.

Best for

creating a starter JSON Schema from sample data before refining required fields and constraints.

Root data typeObject properties

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JSON

JSON to CSV

Convert JSON arrays and objects into CSV files.

Best for

turning JSON arrays or object records into a CSV that can be opened in spreadsheets or import tools.

Valid JSON inputObject keys as headers

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