Free Online Data Format, JSON, XML & Schema Converters
Convert, format, transform, and structure data between JSON, CSV, XML, YAML, SQL, TSV, TOML, and database schemas instantly in your browser.
Available Tools (70)
View in Full Directory →API Mock Payload & Fake Data Generator
Generate mock JSON REST API responses for Users, Products, and Paginated datasets.
Linux Chmod Permissions Calculator
Calculate Linux/Unix file permissions visually with octal numbers and symbolic notation.
Cron Expression Descriptor
Convert cron expressions into human-readable text.
CSS Formatter
Beautify and indent your CSS code.
CSS Minifier
Compress CSS files for faster website loading.
CSV to JSON Converter
Convert CSV data to JSON format.
CSV to Markdown Table Converter
Convert CSV and TSV spreadsheet data into clean GitHub-Flavored Markdown tables.
CSV to SQL INSERT Statements Generator
Convert CSV spreadsheets into batched or single SQL INSERT INTO queries.
CUID2 & KSUID Generator
Generate collision-resistant, horizontal-scaling database primary key identifiers (CUID2 & KSUID).
cURL to Fetch & Axios Converter
Convert cURL commands to modern JavaScript fetch() and axios code.
cURL to Node.js Axios & Fetch Converter
Convert cURL commands into clean async/await Node.js Axios and native Fetch code snippets.
cURL to Python Requests Converter
Transform cURL commands into clean, idiomatic Python requests or async httpx code blocks.
Date to Unix Timestamp
Convert human dates to Unix timestamps.
DNS Zone Record Generator (BIND / RFC 1035)
Create formatted A, AAAA, CNAME, MX, TXT (SPF/DMARC), and SRV records for Cloudflare, Route53, and BIND.
.env to JSON & Environment Config Converter
Convert .env key-value variables to structured JSON and transform JSON objects into formatted .env files.
GraphQL Query Prettifier & Minifier
Format, indent, or compact single-line GraphQL queries, mutations, and variables.
HTML Formatter
Format and beautify your HTML code.
HTML Minifier
Compress HTML markup for better performance.
HTML Table to JSON Converter
Extract and convert HTML table data into clean structured JSON.
HTTP Status Codes Directory
Instant search and reference directory for all RFC HTTP status codes with caching and retry semantics.
IP Range to CIDR Converter
Convert starting and ending IPv4 address ranges into the minimal set of CIDR subnet blocks.
JS Formatter
Format and beautify JavaScript code.
JS Minifier
Minify JavaScript to reduce file size.
JSON Formatter
Format and validate JSON with instant error feedback.
JSON Key Alphabetical Sorter
Recursively sort all JSON keys alphabetically (A-Z or Z-A) for clean git diffs.
JSON-LD Schema Markup Generator
Create Google-compliant structured data markup (JSON-LD) for Articles, Organizations, FAQs, and Products.
JSON Minifier
Compress JSON data by removing whitespace and comments.
JSON Schema to TypeScript Converter
Convert Draft-07 and 2020-12 JSON Schema specifications into clean TypeScript interfaces.
JSON Size & Depth Analyzer
Inspect byte size, minified size, gzip estimate, key counts, and nesting depth.
JSON to CSV Converter
Convert JSON arrays to CSV format.
JSON to Go Struct Generator
Convert JSON payloads into idiomatic Go (Golang) structs with json struct tags.
JSON to GraphQL Schema Generator
Convert JSON sample responses into GraphQL SDL type definitions with scalar types and nullability flags.
JSON to JSON Schema Generator
Generate standard Draft-07 and 2020-12 JSON Schema specifications from sample JSON objects.
JSON to Kotlin Data Class Converter
Transform JSON payloads into Kotlin data classes with kotlinx.serialization annotations.
JSON to Java .properties / .env Converter
Flatten nested JSON objects into dot-notated Java .properties or UPPER_SNAKE_CASE .env files.
JSON to Python Pydantic (v2) Generator
Convert JSON payloads into strict Python Pydantic v2 BaseModel classes with type annotations.
JSON to Rust Struct (Serde) Generator
Convert JSON data into Rust structs with #[derive(Serialize, Deserialize)] annotations.
JSON to SQL DDL Table Creator
Infer SQL column types from JSON objects to generate CREATE TABLE statements for PostgreSQL, MySQL, and SQLite.
JSON to TOML Converter
Convert JSON objects into clean, formatted TOML configuration files.
JSON to TypeScript
Convert JSON objects to TypeScript interfaces.
JSON to XML Converter
Convert structured JSON objects and arrays into clean, indented XML documents.
JSON to XML Schema (XSD) Generator
Generate standard W3C XML Schema Definition (XSD) documents from JSON objects and XML data.
JSON to YAML Converter
Convert JSON data to YAML format.
MAC Address Formatter & Generator
Format MAC addresses into Colon, Dash, Cisco dot, and space notations, or generate random valid MACs.
Markdown Table to CSV & TSV Converter
Parse GitHub-Flavored Markdown tables back into comma-separated (CSV) or tab-separated (TSV) spreadsheets.
MIME Type & File Extension Directory
Instant lookup connecting file extensions to official IANA MIME content-type headers.
Nano ID Generator
Generate cryptographically secure, URL-safe compact unique IDs with customizable length and alphabets.
NDJSON / JSONL to JSON Array Converter
Bidirectional converter between Newline Delimited JSON (.ndjson / .jsonl) and formatted JSON arrays.
Number Base Converter
Convert numbers between Binary, Octal, Decimal, and Hex.
Open Graph & Twitter Card Generator
Create social sharing meta tags (OG & Twitter) with live interactive social preview cards.
Java .properties / .env to JSON Converter
Convert dot-notated Java .properties configuration files and .env variables into nested JSON.
Protobuf (.proto) to JSON Schema Converter
Parse Protocol Buffer (proto3) message definitions into mock JSON data or JSON Schema specifications.
QR Code Generator
Generate QR codes for URLs or text.
Query String to JSON & JSON to Query Converter
Bidirectional parser converting URL query parameters to formatted JSON and JSON objects to query strings.
Bulk 301/302 Redirect Rule Generator
Generate bulk 301/302 redirects for Apache .htaccess, Nginx, Next.js config, and Cloudflare rules.
XML Sitemap URL & Link Extractor
Parse XML sitemaps to extract all <loc> URLs, lastmod timestamps, and changefreq tags into CSV or URL lists.
SQL Formatter
Beautify and format your SQL queries.
SQL Query Minifier & Single-Line Optimizer
Minify SQL queries by removing comments, collapsing whitespace, and compressing queries for embedded application strings.
TOML to JSON Converter
Parse Cargo, PyProject, and generic TOML configuration files into clean structured JSON.
TSV to CSV Converter
Convert Tab-Separated Values (TSV) to Comma-Separated Values (CSV) and vice-versa.
ULID Generator & Timestamp Decoder
Generate 128-bit lexicographically sortable Crockford Base32 ULIDs and decode embedded timestamps.
Unix Timestamp Converter
Convert Unix timestamps to readable dates.
User Agent Parser
Extract browser and OS info from a User Agent string.
UTM Campaign URL Builder
Create trackable marketing URLs for Google Analytics with UTM parameters.
UUID Generator
Generate random UUIDs (v4) for your projects.
WHOIS Record & RDAP Parser
Parse raw WHOIS query text into structured registration details, expiry dates, and nameservers.
XML Formatter
Beautify and format XML data.
XML Minifier
Compress XML data by removing whitespace.
XML to JSON Converter
Parse XML documents and elements into clean, structured JSON objects with attribute preservation.
YAML to JSON Converter
Convert YAML data to JSON format.
Why Use Client-Side Data Converters?
Data transformation is a cornerstone of modern software engineering, API development, and data analysis. Whether you are parsing server logs, importing database dumps, or mocking API payloads, moving data between formats like JSON, XML, YAML, and CSV is a daily task.
ToolSnippet data tools run 100% inside your browser's JavaScript V8 engine. Unlike traditional cloud converters, your proprietary business data, API tokens, and customer records never get sent across the network or logged on remote servers.
With instant syntax validation, custom delimiter configuration, and lossless format transformations, our converters streamline your workflow while preserving complete data privacy.
Frequently Asked Questions
Everything you need to know about our free client-side data & schema converters.
Explore Other Categories
All Categories (9) →Text & String Utilities
Format, count, sanitize, sort, filter, deduplicate, and analyze text strings with zero latency and complete privacy.
Calculators & Math Tools
Compute percentages, conversions, bandwidth transfer times, statistical distributions, loan payments, and binary math instantly.
Design & CSS Generators
Create modern CSS animations, glassmorphism effects, box shadows, gradients, color palettes, and SVG code with instant visual previews.