Data
- Calculators and Unit Conversion
A calculator can do the arithmetic correctly and still answer the wrong question if the units or assumptions are wrong. Before you type a number, write down what it represents.
- CSV and JSON Converter Guide
CSV is a table written as lines of text. JSON can describe the same rows using names and values. CSV and JSON Converter moves between those two shapes. It does not guess which values are dates or numbers.
- CSV Viewer Guide
CSV is a simple table written as text. Each line is a row; commas usually separate its cells. CSV Viewer lays those lines out as a table so you can find and sort records without opening a spreadsheet.
- Dates, Timestamps, and Time Zones
A date and an instant are not the same thing. “Monday at 9” needs a time zone before two people in different places can agree on when it happens. A Unix timestamp, by contrast, points to one instant.
- Email Normalizer Guide
Email Normalizer applies a few text rules to one address per line. This is a convenience transform, not a universal canonical form. Different mail providers can treat the same spelling differently; never automatically …
- IBAN Validator Guide
An IBAN is a standardized international bank-account identifier. IBAN Validator checks its format, expected country length, and mathematical checksum—digits used to catch many typing mistakes. It does not contact a bank.
- IDs and Test Data
Test data should be recognisable as test data. A random-looking identifier is useful for avoiding accidental collisions in a demo; it is not automatically an account, a valid document number, or a safe password.
- Indonesian Data Formats
Indonesian phone numbers, NIK values, and rupiah amounts can look straightforward until you move them between forms, APIs, and spreadsheets. The first question is whether you need to display a value or validate it.
- JSON Path Explorer Guide
JSONPath is a way to select values from JSON using a path starting with $, the document’s root. JSON Path Explorer displays matches and a clickable tree; it does not query an API or change the JSON.
- JSON Schema Validator Guide
A JSON Schema describes rules for JSON data. JSON Schema Validator compares your Document to a Schema directly in the browser. It implements a useful subset of draft-07, not every keyword in the standard.