Developer Data Tools
DataFormatTools provides private, in-browser utilities to format, validate, convert, diff, and inspect JSON, YAML, XML, CSV, and .env files with zero server roundtrips.
JSON Tools
JSON Formatter
Format, beautify, and pretty print JSON online with customizable indentation, key sorting, and instant syntax validation. 100% private in-browser tool.
JSON Validator
Validate JSON syntax online with instant line and column error reporting. Check JSON validity, lint syntax, and detect malformed errors in your browser.
JSON Minifier
Compress and minify JSON online by removing unnecessary whitespace, indentation, and newlines. Reduce payload size for production APIs and storage.
JSON Beautifier
Beautify messy, compacted, or unformatted JSON code online. Prettify JSON with customizable indentation, key sorting, and syntax highlighting.
JSON Viewer
Explore and navigate nested JSON documents with an interactive tree visualizer. Expand, collapse, search, and inspect complex JSON objects online.
JSON Diff
Compare two JSON documents online. Highlight differences, additions, deletions, and key updates side-by-side with automatic key normalization.
JSON → YAML
Convert JSON to YAML online in seconds. Convert nested JSON objects and arrays into clean YAML 1.2 syntax with accurate data type preservation.
JSON → XML
Convert JSON to XML online. Transform JSON objects and arrays into clean, well-formed XML documents with customizable root tags.
JSON → CSV
Convert JSON arrays and nested objects into CSV format online. Automatically flattens nested keys, generates headers, and exports RFC 4180 CSV.
JSON → TypeScript
Generate clean TypeScript interfaces and type definitions from JSON online. Automatically infers nested types, optional fields, and arrays.
JSON Schema Generator
Generate standard JSON Schema (Draft-07 / 2020-12) from sample JSON online. Informs property types, required fields, and array item definitions.
JSON Schema Validator
Validate JSON data against JSON Schema (Draft-07, Draft-04, 2020-12) online using Ajv. Pinpoint missing required fields and type mismatches instantly.
JSONPath Tester
Test and evaluate JSONPath expressions against JSON documents online. Extract data, query arrays, and debug JSONPath queries in real time.
YAML Tools
YAML Formatter
Format and beautify YAML files online. Fix messy indentation, normalize syntax, and pretty print YAML 1.2 documents with client-side privacy.
YAML Validator
Validate YAML syntax online with instant line-by-line error detection. Check YAML validity, lint configuration files, and spot indentation bugs.
YAML Minifier
Compress and minify YAML files online by removing comments and superfluous whitespace while maintaining full YAML 1.2 parsing compatibility.
YAML → JSON
Convert YAML to JSON online. Transform YAML configuration files into valid RFC 8259 JSON with accurate type preservation and zero data loss.
YAML → XML
Convert YAML to XML online. Transform YAML data structures into well-formed XML documents with customizable root elements and entity escaping.
YAML Diff
Compare two YAML files online. Highlight line-by-line differences, added keys, and deleted values side-by-side with clear visual indicators.
XML Tools
XML Formatter
Format and beautify XML code online. Indent XML tags, align attributes, fix malformed tags, and pretty print XML documents in your browser.
XML Validator
Validate XML syntax and well-formedness online. Detect unclosed tags, attribute syntax mistakes, and XML parsing errors with exact line numbers.
XML Minifier
Compress and minify XML documents online. Remove unnecessary whitespace, comments, and line breaks to reduce XML payload sizes.
XML → JSON
Convert XML to JSON online. Transform XML elements, attributes, and CDATA into structured JSON objects with fast in-browser execution.
XML → YAML
Convert XML to YAML online. Convert XML data files and configuration manifests into clean, human-readable YAML 1.2 syntax.
XML Diff
Compare two XML documents online. Detect tag additions, deletions, attribute updates, and structural differences side-by-side.
XPath Tester
Test and evaluate XPath expressions against XML documents online. Extract nodes, attributes, and text values with real-time XPath debugging.
CSV Tools
CSV Formatter
Format and clean CSV files online. Fix inconsistent delimiters, align columns, handle quoted values, and export clean RFC 4180 CSV tables.
CSV Validator
Validate CSV files online for RFC 4180 compliance. Check for unequal row lengths, unclosed quotes, and delimiter errors with line numbers.
CSV → JSON
Convert CSV to JSON online. Transform spreadsheet tables into JSON arrays of objects with automatic type conversion and header mapping.
CSV → YAML
Convert CSV tables to YAML lists online. Transform spreadsheet data into clean, indented YAML sequences of key-value mappings.
CSV → XML
Convert CSV to XML online. Transform spreadsheet rows into clean XML records with custom root and row tags and XML entity escaping.
CSV → SQL
Convert CSV data to SQL INSERT statements online. Generate MySQL, PostgreSQL, SQLite, and MS SQL queries with custom table names.
CSV → Markdown Table
Convert CSV files to GitHub Flavored Markdown tables online. Generate cleanly aligned ASCII markdown tables for READMEs and documentation.
ENV Tools
.env Validator
Validate .env and dotenv files online. Spot duplicate keys, syntax errors, missing values, and unquoted strings with 100% in-browser privacy.
.env Formatter
Format, beautify, and sort .env files online. Sort environment variable keys alphabetically, organize sections, and normalize dotenv quotes.
.env → JSON
Convert .env and dotenv files to JSON online. Transform KEY=VALUE environment pairs into structured JSON objects with type inference.
.env → YAML
Convert .env files to YAML online. Transform dotenv environment variables into YAML key-value mappings for Kubernetes, Docker, and CI/CD.
JSON → .env
Convert JSON objects to .env format online. Transform JSON configuration files into standard KEY=VALUE dotenv environment files.
YAML → .env
Convert YAML files to .env dotenv format online. Transform YAML configuration files into standard KEY=VALUE environment variables.
.env Diff
Compare two .env and dotenv files online. Spot missing variables, differing secrets, and added configuration keys between environments.