ConvertCSV is a web-based application that facilitates the conversion of CSV files to various formats, including JSON, XML, SQL, KML, YAML, and Markdown, among others. It features a range of utilities, such as CSV viewers and editors, as well as tools designed for data extraction, including emails and URLs. Users can execute operations like querying CSV files using SQL, splitting large datasets, and converting CSV files into fixed-width formats, Excel sheets, or PDFs. The entire processing is done on the client-side, ensuring user privacy, and it is capable of handling large files efficiently. With the ability to use SQL for querying and writing data back to CSV or JSON, users have powerful options at their disposal. The tool's default setting includes an auto-detect mode for field separators, making it user-friendly. Additionally, users can extract emails or URLs from websites, filter data to include or exclude specific records, and sort data either alphabetically or numerically. There is also an option for including double or single quotes around values, while the application can treat all quotes as data when needed. Importantly, all operations occur completely on the client-side, meaning that your data remains securely on your device. This ensures a high level of confidentiality and control over your information throughout the conversion process.