File Metadata Analyzer

Yes, all file analysis happens entirely in your browser using JavaScript. Your files are never uploaded to any server. The tool processes everything locally on your device, making it safe to analyze sensitive or confidential files without privacy concerns.

SHA-256 is a cryptographic hash function that generates a unique 64-character fingerprint for any file. It is useful for verifying file integrity (ensuring a file has not been modified), comparing files to check if they are identical, and validating downloaded files against known checksums provided by software vendors.

Yes, you can drag and drop multiple files or select multiple files when browsing. The analyzer will process each file and display all results in a list view. Summary statistics show total files analyzed, combined size, unique file types, and average file size across all analyzed files.

Click the Export CSV button to download a complete report of all analyzed files in CSV format. The export includes file names, sizes, types, extensions, modification dates, and SHA-256 hashes. This is useful for documentation, auditing, or importing the data into spreadsheet applications.

SHA-256 hash calculation is automatically disabled for files larger than 100MB to maintain browser performance and responsiveness. Large file hashing can be computationally intensive and may cause the browser to become unresponsive. For large files, consider using dedicated command-line tools instead.