Break down a ZIP by file type and folder. See which extensions dominate the archive and where the bulk lives. Helps identify low-value bloat. Bar chart included.
Per-job file size, entry count, and batch caps for Size Analyser. Limits apply to every Archive tool in JAD Apps; upgrade for larger uploads and bigger batches.
| Tier | Max archive size | Max entries / archive | Max files per batch |
|---|---|---|---|
| Free | 47.7 MB | 500 | 1 |
| Pro | 476.8 MB | 50,000 | 20 |
| Developer | 1.86 GB | 50,000 | 20 |
Drop a ZIP archive (or any libarchive-supported format)
We group entries by extension and by top-level folder, summing sizes
View the breakdown as a sortable table and a bar chart — biggest groups first
0 bytes uploaded. Archive Size Analyser runs entirely in your browser using fflate, zip.js, and libarchive WASM. Your archive files never leave your device.
File Type Breakdown counts entries per extension; Size Analyser focuses on bytes per group plus top-level folder rollups. Use both — they answer different questions.
No — that's the Redundancy Analyser, which uses SHA-256 to detect actual duplicates. Size Analyser only groups by name/extension.
Yes — fflate parses TAR.GZ entries directly. The bar chart and breakdown work identically across all supported archive formats.
Group every entry in an archive by file extension and see counts plus uncompressed and compressed totals. Find dominant file types and dead weight.
Open toolSHA-256 every entry inside an archive and group identical files. Spot duplicate logos, libraries, or .DS_Store waste. Reports total bytes recoverable.
Open toolInspect every entry in a ZIP and see compression ratios per file plus the overall archive ratio. Spot already-compressed files that don't benefit from re-zipping.
Open tool