ConvertCSV

ConvertCSV is an online tool that allows users to convert CSV files to and from multiple formats, including JSON, XML, SQL, KML, YAML, Markdown, and more. It also provides a suite of utilities such as CSV viewers, editors, and data extraction tools for retrieving emails or URLs. Users can query CSV files using SQL, split large files, and transform CSV data into fixed-width, Excel, or PDF formats. All processing occurs entirely on the client side, ensuring complete data privacy and efficient handling of large files. ConvertCSV automatically detects field separators by default and supports advanced options such as filtering records, ordering data alphabetically or numerically, and customizing quotation marks around values. Because the tools run fully in the browser, users can confidently process their data — it never leaves their computer.