JSON → Excel (Offline Converter) is a Chrome add-on designed to seamlessly convert local JSON files to Excel format (.xlsx) without requiring internet access. This tool is particularly useful for users who need to work with data locally, as it ensures that all operations are performed offline, providing a secure and private experience. The converter identifies arrays of objects in JSON files and flattens nested structures into straightforward dot-key formats, eliminating any confusion associated with [object Object] cells.

The process is user-friendly; simply open the extension, select the desired JSON file, and initiate the conversion. Each array within the JSON file is transformed into a separate Excel sheet, complete with unique and valid names. Users can monitor the conversion process through live progress updates, ensuring they are informed every step of the way. The extension requires minimal permissions, only utilizing storage to maintain a local conversion counter, thereby safeguarding user privacy.