Data Tools

14 tools 100% Client-Side

JSON ⇄ CSV, XML converters, diff checkers, and dataset parsers.

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Data14 tools

JSON ⇄ CSV, XML converters, diff checkers, and dataset parsers.

100% Local Only

Showing 14 tools

Local

JSON Formatter & Validator

Format, beautify, validate, and minify JSON with interactive collapsible tree explorer, line-number error markers, and JSON5 relaxed syntax support.

developer

Local

YAML Formatter & Validator

Format and validate YAML streams with multi-document support (---), tab indentation warning fixers, block/flow formatting, and YAML to JSON conversion.

developer

Local

SQL Formatter & Beautifier

Format and beautify SQL across PostgreSQL, MySQL, T-SQL, SQLite, BigQuery, Snowflake, and Oracle with customizable casing, comma style, and minify mode.

developer

Local

JSON ⇄ CSV Converter

Convert JSON arrays to CSV spreadsheets and CSV back to JSON with nested object dot-notation flattening, custom delimiters, and live table preview.

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Local

Diff Checker & Text Comparator

Compare two text, code, or JSON files with side-by-side and unified views, line/word/character diffing, whitespace filtering, and patch export.

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Local

WebSocket Tester & Real-Time Client Studio

Client-side WebSocket testing suite and debugger. Connect to ws:// and wss:// endpoints, transmit JSON/text payloads, inspect live message streams, test heartbeats, and measure latency.

developer

Local

API Tester & REST HTTP Client Studio

In-browser REST API request builder and HTTP client. Test GET, POST, PUT, DELETE endpoints, inspect JSON responses, manage headers, query params, auth, environments, collections, and cURL commands 100% client-side.

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Local

XML Formatter & Validator

Format, beautify, and validate XML documents with interactive DOM tree exploration, line-number error reporting, attribute sorting, and XPath copy.

developer

Local

SQL Query Builder

Visually build SQL SELECT queries with interactive JOINs, WHERE filters, GROUP BY, HAVING, and live multi-dialect execution sandbox.

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Local

SQL Schema Visualizer

Convert SQL CREATE TABLE DDL into interactive Entity-Relationship (ER) diagrams with pan/zoom, foreign key highlighting, and PNG/SVG export.

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Local

DB Diagram & ERD Editor

Interactive database diagram editor with bidirectional DBML code sync, drag-and-drop relationship connections, SQL import, and export.

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Local

Code Diff Viewer

GitHub PR style syntax-highlighted code diff viewer supporting dual files, multi-file git patches, intra-line word diffing, and split/unified views.

developer

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