FitZip.local is a browser-based tool that allows you to analyze your Fitbit step data locally. It processes Fitbit data exported as a ZIP file, and exports the step activity over the specified duration.

• Local processing: Your data never leaves your computer
• Date range selection: Analyze data for specific time periods
• 5-minute interval aggregation: View your step data in 5-minute chunks
• CSV export: Download your processed data for further analysis

• Runs entirely in the browser - no server required
• Built with vanilla JavaScript
• Uses the JSZip library to process ZIP files
• Replaces a bookmarklet that could previously do this; the bookmarklet is not functional since Fitbit removed the web dashboard app.

FitZip.local processes all data locally in your browser. No data is sent to any server or third party.

GNU AGPL v3.0