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File Information & Size Inspector

100% Client-Side

Analyze any local file byte size, MIME type, extension, and calculate estimated transfer speeds on 4G, 5G, and broadband networks.

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Drop any file here or click to inspect Videos, audio, documents, archives — processed 100% locally

How to Use File Information & Size Inspector

Select Local File

Drag and drop any file (video, audio, PDF, archive, document).

Inspect Technical Specs

View byte count, formatted size, MIME type, and last modified date.

Review Transfer Speeds

Check estimated upload/download duration on 4G LTE, 5G, and gigabit fiber.

✓ Network Transfer Estimates

Calculates expected download speeds across varying mobile and home connections.

✓ Precise Byte Breakdown

Reports exact bytes, Kilobytes (KB), and Megabytes (MB).

✓ Zero File Reading

Reads only header descriptors in RAM without transferring file contents.

🔒 Complete Client-Side Isolation

This tool runs entirely in your local browser runtime. No logs, analytics tracking, or remote server transmissions occur.

Upload or paste CSV spreadsheet data to view, search, and inspect records in a clean, responsive data table with zero server uploads.

Convert CSV spreadsheet tables into structured JSON arrays of objects with automatic header mapping and data type detection.

Convert JSON arrays of objects into RFC 4180 compliant CSV files with automatic key union and quotation escaping in your browser.