Free online data and file format tools
Open, convert, query and tidy structured data — CSV, JSON, YAML, XML, SQLite and ZIP — without installing anything.
- CSV Toolkit — View, Convert and Chart CSVOpen a CSV in your browser without Excel reformatting it. Check for malformed rows, convert to JSON, and chart any column. Nothing is uploaded.
- JSON FormatterFormat, minify, validate and sort JSON, with the position of the first syntax error reported. Runs entirely in your browser — nothing is uploaded.
- Format Converter — JSON, YAML and XMLConvert JSON to YAML, YAML to JSON, or either to XML and back. Runs entirely in your browser, so config files with secrets never leave your machine.
- SQL Playground — Run SQLite in Your BrowserRun real SQLite queries against a .sqlite file or a CSV, entirely in your browser. Nothing is uploaded, so you can query private data safely.
- Archive Toolkit — Create and Open ZIP FilesCreate a ZIP from your files, or open one and extract what you need — entirely in your browser. Nothing is uploaded, so private files stay private.
- Unit & Base ConverterConvert length, mass, temperature, area, volume, speed, time and data units, and between binary, octal, decimal and hex. Instant, in your browser.
- ZIP to Text — Combine Archive FilesUpload a ZIP and get back one text file containing every file in the archive, joined in order. Free, no sign-up, and nothing is kept after the download.