Data formats
Format JSON, CSV, schemas, and structured payloads before they hit production
Structured data tools for JSON formatting, YAML and XML conversion, schema validation, CSV editing, and API-ready output.
Use this hub when you need reliable structured output for API design, debugging, migrations, reporting, or sharing test fixtures with teammates.
Tools in this hub
Featured picks
Language support
Common tasks
Repair and inspect payloads
Format JSON, test JSONPath queries, and view structured data before a bug spreads further downstream.
Convert between machine-readable formats
Move payloads between JSON, YAML, XML, CSV, and related formats without writing a one-off script.
Validate examples and contracts
Generate mock records or schema checks when you need trustworthy sample data for documentation and QA.
Featured tools
Start with the registered tools that cover the most common jobs in this workflow, then browse the full list.
JSON Formatter & Viewer — Free Online
Format, prettify, minify, and validate JSON instantly with this free online JSON formatter. Adjust indentation, sort keys, and view stats in real time.
XML Formatter & Validator — Pretty Print, Minify, Convert
Format, minify, and validate XML in your browser with exact error positions, then convert between XML and JSON. No upload, no sign-up.
JSON Patch Generator & Applier — RFC 6902
Generate RFC 6902 JSON Patch operations from two documents, apply and validate existing patches, create inverse patches, and copy JSON Pointer paths locally.
Data Format Converter — Free Online
Convert between JSON, YAML, TOML, and CSV instantly with this free online data format converter. Swap formats with one click, no sign-up required.
JSONPath Tester — Query JSON Responses
Test JSONPath expressions against JSON data in your browser. Extract values from API responses, logs, configuration files, and AI-generated JSON payloads.
CSV Viewer & Editor — Free Online
View, edit, sort, and export CSV data in a spreadsheet-like table. Supports custom delimiters (comma, tab, semicolon, pipe). Powered by PapaParse — no data leaves your browser.
All tools in this category
Browse every registered tool in this category and keep moving through the real task at hand.
JSON Formatter & Viewer — Free Online
Format, prettify, minify, and validate JSON instantly with this free online JSON formatter. Adjust indentation, sort keys, and view stats in real time.
XML Formatter & Validator — Pretty Print, Minify, Convert
Format, minify, and validate XML in your browser with exact error positions, then convert between XML and JSON. No upload, no sign-up.
SQL Test Data & INSERT Generator
Generate deterministic multi-row INSERT statements from field definitions or JSON for PostgreSQL, MySQL, and SQLite.
JSON Patch Generator & Applier — RFC 6902
Generate RFC 6902 JSON Patch operations from two documents, apply and validate existing patches, create inverse patches, and copy JSON Pointer paths locally.
Data Format Converter — Free Online
Convert between JSON, YAML, TOML, and CSV instantly with this free online data format converter. Swap formats with one click, no sign-up required.
JSONPath Tester — Query JSON Responses
Test JSONPath expressions against JSON data in your browser. Extract values from API responses, logs, configuration files, and AI-generated JSON payloads.
Local SQLite & Parquet Explorer
Inspect SQLite databases and preview Parquet files entirely in your browser, with read-only SQL queries and CSV or JSON export.
Avro, CBOR, and MessagePack Binary Inspector
Encode JSON to Avro, CBOR, or MessagePack and decode hex or Base64 binary data with byte counts and reviewable typed values.
API Mock Data Generator — JSON Test Payloads
Generate deterministic JSON mock data for frontend development, API contracts, tests, documentation, and AI-assisted prototyping directly in your browser.
JSON Schema Generator & Validator — Free Online
Generate JSON Schema from sample data or validate JSON against a schema with this free online tool. Uses Ajv for validation. No sign-up required.
CSV Viewer & Editor — Free Online
View, edit, sort, and export CSV data in a spreadsheet-like table. Supports custom delimiters (comma, tab, semicolon, pipe). Powered by PapaParse — no data leaves your browser.
SQL Formatter & Beautifier — Free Online
Format, beautify, and pretty-print SQL queries instantly. Supports MySQL, PostgreSQL, SQLite, T-SQL, PL/SQL, MariaDB, BigQuery, and standard SQL with customizable indentation and keyword casing.
IBAN Validator and Parser
Validate an IBAN with a Mod 97 checksum check, normalize spacing, and extract the country code and check digits directly in your browser.
Phone Parser and Formatter
Parse a phone number into its E.164 form, calling code and national number, without ever guessing a country the input did not state.
Protobuf to JSON Converter
Free online Protocol Buffers (Protobuf) to JSON converter. Encode JSON to Protobuf binary and decode Protobuf binary back to JSON. Paste your .proto schema and data. No sign-up required.
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