Archive File Info Analyzer
Drop in a ZIP file and get a full breakdown of its contents — entry count, on-disk size, uncompressed size and the effective compression ratio — computed locally.
Analyze Archive
How It Works
Three steps to full stats.
Choose a ZIP file
Select or drag a .zip file into the upload area.
Analyze
Press Analyze Archive to read the ZIP index locally.
Review stats
See file count, compressed size, uncompressed size and ratio.
FAQ
Common questions about archive statistics.
What statistics are reported?
File count, compressed (archive) size, uncompressed size and the percentage saved by compression.
How is the compression ratio computed?
It compares the archive size against the total uncompressed size of every entry.
Does analysis upload the file?
No. The ZIP index is read entirely in your browser.
Are encrypted ZIPs supported?
No. Encrypted archives cannot be inspected without a password.
Are there size limits?
No artificial limits, subject to device memory.
Is the file modified?
No. The archive is opened read-only.