Free
JSON · Data Formats
The classic JSON validator and formatter.
jsonvalidatorformatter
Data Formats•Web-Based•16 tools
Best Web-Based Data Formats Tools (16 Curated)
Discover the 16 best browser-based tools for data formats. Run directly in any modern browser without local installation. Curated, compared, and updated for developers.
Quick Comparison (16 Tools)
| Tool | Pricing | Platforms | Top Strength | Link |
|---|---|---|---|---|
| JSONLint | free | web | The classic JSON validator and formatter. | Details → |
| JSON Formatter | free | web | Format, validate, minify and view JSON online. | Details → |
| JSON Editor Online | free | web | Advanced JSON editor with tree view, query, transform and diff. | Details → |
| JSON Hero | free | web | Beautiful, shareable JSON viewer with previews for many data types. | Details → |
| JSON Schema | free | web | Official site of the JSON Schema specification, with tools and validators. | Details → |
| quicktype | freemium | web, cli | Generate types and serializers from JSON: TypeScript, Java, Kotlin, Go and more. | Details → |
| Transform | free | web | Convert JSON into TypeScript, Zod, GraphQL, Kotlin, Go structs and more. | Details → |
| Code Beautify | free | web | Large collection of online formatters, validators and converters. | Details → |
| FreeFormatter | free | web | Free online formatters, validators, encoders and escape tools. | Details → |
| YAMLLint | free | web | Validate and beautify YAML online. | Details → |
Showing top 10 of 16. Browse the full grid below.
Free
JSON · Data Formats
Format, validate, minify and view JSON online.
jsonformattervalidatorviewer
Free
JSON Editor Online
Open SourceJSON · Data Formats
Advanced JSON editor with tree view, query, transform and diff.
jsoneditorviewerdiff
Free
JSON Hero
Open SourceJSON · Data Formats
Beautiful, shareable JSON viewer with previews for many data types.
jsonviewersharing
Free
JSON · Data Formats
Official site of the JSON Schema specification, with tools and validators.
jsonschemaspecificationvalidation
Freemium
quicktype
Open SourceJSON · Data Formats
Generate types and serializers from JSON: TypeScript, Java, Kotlin, Go and more.
jsoncodegentypescriptconverter
Free
Transform
Open SourceJSON · Data Formats
Convert JSON into TypeScript, Zod, GraphQL, Kotlin, Go structs and more.
jsonconverterzodcodegen
Free
Other Formats · Data Formats
Large collection of online formatters, validators and converters.
jsonxmlyamlcsv
Free
Other Formats · Data Formats
Free online formatters, validators, encoders and escape tools.
xmljsonhtmlencoder
Free
YAMLLint
Open SourceYAML · Data Formats
Validate and beautify YAML online.
yamlvalidatorformatter
Free
Other Formats · Data Formats
Official TOML language site with spec, docs and editor support.
tomlconfigspecification
Free
MessagePack
Open SourceOther Formats · Data Formats
Efficient binary serialization format, JSON-like but compact.
serializationbinarymsgpack
Free
Other Formats · Data Formats
Official Protocol Buffers documentation from Google.
protobufserializationgrpcgoogle
Free
Apache Avro
Open SourceOther Formats · Data Formats
Data serialization system commonly used with Kafka.
serializationkafkaschema
Freemium
CSV · Data Formats
Convert CSV to JSON, SQL, Excel, XML and back, online.
csvconverterjsonsql
Freemium
JSON Crack
Open SourceJSON · Data Formats
Open-source JSON visualizer that turns data into interactive graphs.
jsonvisualizergraphtrending