JSON & Data
178 free json & data tools in the Developer Tools collection — every one runs in your browser with no signup and no uploads. Page 2 of 2.
SQL String Escaper
Escape single quotes and backslashes for safe SQL literals
SQL Transaction Isolation Levels
READ UNCOMMITTED through SERIALIZABLE with anomaly prevention and lock behavior.
SQL Syntax Cheatsheet
Search SQL keywords, clauses and functions with syntax and dialect notes.
SQL CREATE TABLE to JSON Schema
Convert SQL CREATE TABLE DDL into a JSON Schema draft-07 or TypeScript interface.
SQL Window Functions Reference
SQL window functions — ROW_NUMBER, RANK, LAG, LEAD — with OVER() syntax.
SQLite Type Affinity Reference
SQLite type affinity rules and storage classes with conversion behavior.
SQLite Schema Viewer
Inspect SQLite table schemas, indexes and foreign keys without a GUI
SQLite to CSV Exporter
Export any SQLite table to CSV directly in your browser
SQLite Database Viewer
Open and browse SQLite .db files in your browser — no upload
Schema.org Structured Data Types
Key Schema.org types for rich results — Article, Product, FAQ, BreadcrumbList.
TOML Syntax Reference
TOML v1.0 tables, arrays, inline tables, dates and value types explained.
TopoJSON to GeoJSON Converter
Decode TopoJSON back to GeoJSON for tools that don't support TopoJSON
tsconfig.json Builder
Generate a TypeScript configuration for any project type or strictness level
tsconfig.json Options Reference
TypeScript compiler options with type, default and effect on emit and checking
Protobuf Varint Encoder/Decoder
Encode integers as Protocol Buffers variable-length integers
vercel.json Builder
Generate a vercel.json with routes, rewrites, and environment settings
XLSX to CSV Converter
Convert Excel spreadsheet sheets to CSV files — no Excel required
XML Entity Escaper/Unescaper
Escape the 5 XML special chars amp, lt, gt, apos, and quot
Common XML Namespaces Reference
Frequently used XML namespace URIs for SOAP, SVG, XHTML, Dublin Core and more.
YAML Linter
Lint YAML for syntax errors, duplicate keys, and common gotchas
YAML Syntax Reference
YAML 1.2 scalars, sequences, mappings, anchors and multi-document syntax.
JS Object to JSON Converter
Turn a JavaScript object literal into strict, valid JSON instantly.
XML Sitemap Generator
Build a valid XML sitemap from a list of URLs.
JSON to CSV Converter
Flatten a JSON array of objects into clean CSV.
CSV to JSON Converter
Turn CSV into a clean JSON array of objects.
JSON to YAML Converter
Convert JSON into clean, readable YAML.
YAML to JSON Converter
Convert YAML config into formatted JSON.
XML Formatter & Minifier
Pretty-print or minify XML right in your browser — nothing is uploaded.
YAML Formatter & Re-indenter
Normalise YAML indentation and spacing in your browser — no upload.
SQL Formatter & Beautifier
Pretty-print SQL queries in your browser — keywords on their own lines.
JSON to XML Converter
Convert JSON objects and arrays into well-formed XML.
XML to JSON Converter
Convert XML documents into clean, structured JSON.
JSON to TOML Converter
Convert JSON into clean TOML config syntax.
TOML to JSON Converter
Convert TOML config files into structured JSON.
JSON to TypeScript Interface
Generate TypeScript interfaces from a JSON sample.
JSON Escape / Unescape
Encode text into a JSON string or decode it back.
CSV to TSV Converter
Convert comma-separated values to tab-separated values.
JSON to SQL INSERT Generator
Turn a JSON array of objects into SQL INSERT statements.
CSV to SQL INSERT Generator
Turn a CSV file into SQL INSERT statements.
JSON String Escape / Unescape
Escape text into a JSON string literal, or unescape it back.
JSON Minifier
Compact JSON to a single line and validate it.
JSON Diff Tool
Compare two JSON documents and see what changed.
JSON to Go Struct
Generate Go structs with json tags from a JSON sample.
JSON to Zod Schema
Generate a Zod validation schema from a JSON sample.
SQL Cheatsheet
The everyday SQL statements, grouped and searchable — copy any one.
JSONPath Tester
Test JSONPath expressions against your JSON, live in the browser.
Mock JSON Generator
Generate realistic mock JSON records for users, products and posts.
JSONPath Query Playground
Paste JSON, run JSONPath expressions, see matched values and their paths live.
Excel (XLSX) to CSV & JSON Converter
Upload a spreadsheet, pick a sheet, preview it, and export clean CSV or JSON.
JSON to .env Converter
Turn a JSON config object into dotenv key=value lines — in your browser.
JSON Flattener
Flatten nested JSON into single-level dot-path keys — in your browser.
JSON Unflattener
Rebuild nested JSON from flat dot-path keys — privately in your browser.
JSON Key Sorter
Sort JSON object keys alphabetically and recursively — in your browser.
SQL IN Clause Builder
Turn a list of values into a ready-to-paste SQL IN (...) clause.
CSV to HTML Table
Convert CSV into a clean, escaped HTML <table> you can paste anywhere.
JSON Schema Generator
Paste JSON and infer a ready-to-use JSON Schema you can copy or download.
CSV Merger
Combine two or more CSV files by stacking rows or joining on a key column.
YAML / JSON / TOML Converter
Paste any of the three formats and convert instantly between them.
CSV Statistics Analyzer
Upload a CSV and get instant per-column stats, distributions and histograms.
JSON Flatten / Unflatten
Convert nested JSON to dot-notation keys and back, losslessly.
SQL and GraphQL Formatter
Paste a messy SQL or GraphQL query and pretty-print it with clean indentation.
JSON Pretty-Diff
Compare two JSON documents and see exactly what was added, removed or changed.
JSON to Protobuf Schema Generator
Paste sample JSON and infer a ready-to-use Protocol Buffers .proto file.
JSON to TypeScript Interfaces
Paste JSON, get clean nested TypeScript interfaces or type aliases.
SQL Minifier
Collapse formatted SQL into the smallest valid one-line statement.
CSV Diff Tool
Compare two CSV files by a key column and see added, removed and changed rows.
CSV to JSON Converter (and JSON to CSV)
Convert CSV to a JSON array or JSON back to CSV — with delimiter and header controls.
TOML ⇄ JSON Converter
Convert between TOML and JSON in either direction, with validation.
YAML to JSON Converter (Both Directions)
Paste YAML or JSON, convert either way with validation and clear error messages.
Nested JSON Flattener
Flatten nested JSON to dot-notation keys, unflatten back, and export flat CSV.
Query String Parser & Builder
Parse a URL query into an editable table, then rebuild and copy it.
Product Schema Generator
Generate valid schema.org Product JSON-LD for rich Google results.
Breadcrumb Schema Generator
Generate valid schema.org BreadcrumbList JSON-LD in seconds.
FAQ Schema Generator
Build valid FAQPage JSON-LD structured data in seconds.
Schema Markup Generator
Generate valid JSON-LD structured data for any schema.org type instantly.
Video Schema Generator
Generate valid schema.org VideoObject JSON-LD for better video SEO.
Article Schema Generator
Build valid JSON-LD structured data for any article type in seconds.
Local Business Schema Generator
Generate valid schema.org/LocalBusiness JSON-LD for Google Rich Results — free and instant.