Data Tools
JSON, CSV, SQL, timestamps, and other structured data tools for debugging, transforming, and validating payloads.
Format, validate, convert, and inspect structured developer data.
Data Tools Hub
The Data hub brings together tools for inspecting, formatting, converting, and validating structured information that developers work with every day. It is the right entry point when your workflow revolves around payloads, tables, schemas, timestamps, numeric bases, or database-oriented text.
These tools are especially useful for API debugging, migration work, internal dashboards, and documentation. Instead of opening a heavy desktop utility, you can jump into a focused browser tool that solves one data problem cleanly and locally.
Related categories
Subtopics in this hub
Each subtopic clusters a narrower intent so users can reach the right utility faster.
Structured Data
6 tools in this cluster
Environment Variable Validator
Validate and audit .env files for errors, security risks, and best practices. Detect missing values, malformed syntax, insecure patterns, and configuration issues.
JSON Escape and Unescape Tool
Convert plain text into JSON-safe escaped strings, reverse escaped values back to readable text, and catch double-escaping mistakes in API workflows.
JSON Formatter – Beautify & Pretty Print JSON Online
A high-performance, strictly local JSON formatter and validator with beautiful syntax highlighting. Format or minify your JSON instantly.
JSON Validator – Check JSON Syntax & Find Errors
Strict, fast, and secure client-side JSON validator. Features live syntax highlighting, exact error line detection, and detailed context snippets.
XML Formatter & Validator
Format, validate, and minify XML in the browser with exact parse-error location.
YAML Formatter & Validator
Strictly format, validate, and beautify your YAML configurations. Instantly detect syntax errors with line-level precision. Essential for Docker and Kubernetes.
Tabular Data
3 tools in this cluster
CSV ↔ JSON Converter
Enterprise-grade bidirectional data converter. Instantly transform CSV to JSON, or JSON to CSV using the robust PapaParse engine. Handles large data sets safely in your browser.
CSV to SQL Converter
Convert CSV data to SQL INSERT or CREATE TABLE statements. Support multiple SQL dialects (MySQL, PostgreSQL, SQLite, T-SQL) with automatic type detection.
Zengin Bank File Format Validator
Audit fixed-width Zengin (.txt) files for field length violations, invalid Zenkaku characters in Hankaku fields, and trailer hash total mismatches.
Database
2 tools in this cluster
Prisma Schema Visualizer (Interactive ERD)
An interactive, field-level visualizer for Prisma ORM. Turn schema text into a browsable ER diagram with automated layout, relationship tracing, and dark mode support.
SQL Formatter & Beautifier
A fast, privacy-friendly, client-side tool to format, indent, and beautify your raw SQL queries instantly.
Time & Date
3 tools in this cluster
Age Calculator
Calculate your exact age in years, months, and days, plus total days lived, weeks, and your next birthday countdown.
Cron Expression Parser (Advanced)
Professional-grade Cron expression parser. Supports 5-7 field formats (seconds/years), real-time field decomposition, and validation.
Epoch Timestamp Converter
Quickly convert Unix epoch timestamps to human-readable dates and local times, and vice versa.
Numbers
6 tools in this cluster
BMI Calculator
Calculate your Body Mass Index instantly with metric or imperial units and see your healthy weight range.
Chmod Permission Calculator
Build Unix file permissions visually with checkboxes and get the octal value, symbolic notation, and chmod command instantly.
Compound Interest Calculator
Calculate how money grows over time with compound interest. Supports monthly contributions and multiple compounding frequencies.
Multi-Base Number Converter
High-precision number system conversion tool. Instantly convert between Binary, Octal, Decimal, Hexadecimal, Base 32, and Base 36 with BigInt support.
Percentage Calculator
Solve the three most common percentage questions: find a percentage of a value, find what percent one number is of another, and calculate percent change.
Tip Calculator
Calculate tip amount and split the bill evenly between any number of people with quick tip percentage presets.
Recently added
Zengin Bank File Format Validator
Audit fixed-width Zengin (.txt) files for field length violations, invalid Zenkaku characters in Hankaku fields, and trailer hash total mismatches.
Percentage Calculator
Solve the three most common percentage questions: find a percentage of a value, find what percent one number is of another, and calculate percent change.
Age Calculator
Calculate your exact age in years, months, and days, plus total days lived, weeks, and your next birthday countdown.
BMI Calculator
Calculate your Body Mass Index instantly with metric or imperial units and see your healthy weight range.
Chmod Permission Calculator
Build Unix file permissions visually with checkboxes and get the octal value, symbolic notation, and chmod command instantly.
Compound Interest Calculator
Calculate how money grows over time with compound interest. Supports monthly contributions and multiple compounding frequencies.
Guides that support this hub
Use supporting articles to go deeper on workflows that span multiple tools in this category.
CSV to SQL Data Import: The Database Migration Boundary
Learn how to safely and correctly import CSV data into databases. Understand type mapping, SQL dialects, and common pitfalls in data migration workflows.
References tools in this workflow 1
Data Tools Hub: JSON, CSV, SQL, Timestamps, and Developer Payload Workflows
A hub guide to choosing the right data tool for JSON, CSV, SQL, timestamps, cron expressions, and structured debugging workflows.
References tools in this workflow 5
How to Debug REST API Responses
A practical guide to reading, validating, and decoding API responses - JSON formatting, Base64 decoding, URL decoding, and timestamp conversion.
References tools in this workflow 4
The .env Configuration Boundary: Why Validation Before Deployment Matters
Understand why environment variable validation is critical—prevent configuration disasters, exposed secrets, and runtime failures. Learn the validation boundary between local development and production.
References tools in this workflow 1
Key workflows in this category
Data Tools Hub: JSON, CSV, SQL, Timestamps, and Developer Payload Workflows
A hub guide to choosing the right data tool for JSON, CSV, SQL, timestamps, cron expressions, and structured debugging workflows.
How to Debug REST API Responses
A practical guide to reading, validating, and decoding API responses - JSON formatting, Base64 decoding, URL decoding, and timestamp conversion.
Check IPv4 CIDR Boundaries Before You Touch Firewall Rules
A practical workflow for checking subnet boundaries, broadcast scope, and usable host ranges before a firewall or allowlist change widens the wrong network.
Prisma Relation Review Before Migrate and Generate
A practical review workflow for catching ambiguous relations, missing IDs, and misleading model boundaries before Prisma migrate or generate turns them into noisy downstream errors.
Frequently asked questions
What belongs in the Data hub?
Use the Data hub for tools that work with structured developer data such as JSON, YAML, CSV, SQL, timestamps, cron expressions, and number systems.
When should I start from a category hub instead of a single tool?
Start from the hub when you know the problem area but not the exact utility yet. The hub helps you move from a broad workflow, such as API debugging or database cleanup, to the right specialized tool.
Are these data tools safe for private payloads?
Most tools in this project are designed to run locally in the browser, which makes them practical for inspecting sensitive payloads without uploading them to a server.