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Data Tools

Convert, transform, and generate data in various formats. CSV, JSON, XML, YAML, and more.

CSV Editor

Advanced CSV editor with filtering

CSV to JSON

Convert CSV to JSON with options

JSON to CSV

Convert JSON to CSV format

CSV to XML

Convert CSV to XML markup

JSON to XML

Convert JSON to XML structure

JSON to YAML

Convert JSON to YAML config

YAML to JSON

Convert YAML to JSON object

Data Generator

Generate test data patterns

Table Generator

Generate HTML/Markdown tables

Chart Data Builder

Build data for Chart.js/D3.js

Bidirectional

Convert between formats in both directions

File Support

Upload and download files directly

Client-Side

All processing happens in your browser

About the Data Tools

NKable's data tools convert, edit and generate structured data entirely in your browser: CSV, JSON, XML and YAML conversion, a spreadsheet-style CSV editor, a table generator, test data generation and a chart data builder.

These data tools all run client-side, which is the distinction from the converter category. Nothing is uploaded, so a customer export, a financial CSV or an API response containing real records can be worked on without leaving your machine.

The set covers the whole small-scale data workflow: convert a file into the format the next system wants, edit rows and columns without opening a spreadsheet that will reformat your dates, build a table for a document, or generate realistic records to test with.

For very large files or Excel workbooks the server-based converters handle the heavy parsing more comfortably. For everything else, staying in the browser is both faster and private.

How to use the Data Tools

  1. Pick a tool. Choose a converter, the CSV editor, a generator or the table builder.
  2. Add your data. Paste it or select a file — nothing is uploaded.
  3. Check the parsed result. Confirm columns, types and structure look right.
  4. Export or copy. Download the output or copy it to your clipboard.

Data Tools features

  • CSV, JSON, XML and YAML conversion in the browser
  • Spreadsheet-style CSV editing
  • HTML, Markdown, CSV and JSON table generation
  • Realistic test data generation
  • Chart data configuration for Chart.js and D3
  • Everything runs client-side with nothing uploaded

Frequently asked questions

Is my data uploaded when I use these?

No. Every tool in this category runs entirely in your browser, so records never leave your machine.

How is this different from the Converters category?

These run client-side. The converters use the server, which handles Excel and very large files more comfortably.

Is there a file size limit?

Only your device's memory. Very large files are better handled by the server-based converters.

Can I edit a CSV without Excel?

Yes. The CSV editor adds and removes rows and columns without reformatting dates or stripping leading zeros.

Are these tools free?

Yes, with no account, no watermark and no row limit.