Browser · Private · On-device

Data & spreadsheet tools

Convert, format, validate, and clean CSV, JSON, XML, YAML, TSV, and Markdown tables — runs entirely in your browser. Paste in, get output, download.

File tools

Data formats

Auto

Sample data

Forever free

Stays on your deviceAuto-runs with sample dataPrivate by design

Convert between formats

Switch structured data between CSV, JSON, XML, YAML, TSV, and HTML.

CSV → JSON

Convert CSV data into structured JSON.

CSV → XML

Convert CSV rows into a simple XML document.

CSV → YAML

Convert CSV rows into YAML.

CSV → HTML

Render CSV data as a printable HTML table.

CSV → TSV

Convert comma-separated values to tab-separated values.

JSON → CSV

Convert a JSON array into CSV rows.

JSON → XML

Convert JSON values into XML.

JSON → TSV

Convert a JSON array into TSV rows.

JSON → HTML

Render JSON data as an HTML table.

JSON → YAML

Convert JSON into YAML.

XML → CSV

Convert XML data into CSV rows.

XML → JSON

Convert XML into structured JSON.

XML → YAML

Convert XML data into YAML.

XML → TSV

Convert XML data into TSV rows.

XML → HTML

Render XML as a readable HTML page.

YAML → JSON

Convert simple YAML into JSON.

YAML → CSV

Convert YAML key/value content into CSV.

YAML → TSV

Convert YAML key/value content into TSV.

YAML → XML

Convert YAML key/value content into XML.

YAML → HTML

Render YAML as a printable HTML page.

TSV → CSV

Convert tab-separated values to CSV.

TSV → JSON

Convert TSV rows into JSON.

TSV → XML

Convert TSV rows into XML.

TSV → YAML

Convert TSV rows into YAML.

Format & minify

Pretty-print or compact JSON and XML in your browser.

JSON formatter

Pretty-print JSON in your browser.

JSON minifier

Strip whitespace from JSON.

XML formatter

Pretty-print XML in your browser.

XML minifier

Strip whitespace from XML.

Validate & lint

Quickly check whether JSON, YAML, or XML is well-formed.

JSON validator

Check that JSON parses cleanly.

YAML validator

Quickly check simple YAML.

Clean & tidy

Trim empty CSV rows, deduplicate, and normalise structured input.

CSV cleaner

Remove blank rows from CSV input.

Tables & Markdown

Convert between CSV/TSV tables and Markdown tables.

Table → Markdown

Convert CSV or TSV into a Markdown table.

Markdown → CSV

Convert a Markdown table into CSV.