What This Tool Does
This tool reports the properties of an archive: the detected format, entry count, stored and unpacked sizes, and read-level statistics across a wide range of archive types.
The information comes from reading the archive itself, not from guessing by the file name, which makes it a reliable first step before you repair, convert or extract.
What the Report Shows
- Detected archive format.
- Total file and folder counts.
- Total stored (compressed) and unpacked sizes.
- An estimation of how the content's size relates to the archive.
Step by Step
- 1
Upload the archive.
- 2
Click Get Archive Info.
- 3
Read the properties report.
How It Works
The archive engine lists the archive with a detailed flag, reading the directory so entries and sizes can be totalled. All numbers are measured from actual archive data.
Troubleshooting
- Format is always detected from file data, so odd extensions are still recognized.
- Damaged archives may fail listing; repair first (repair tool) and then rerun.
- Encrypted archives may still report counts; content verification is a separate step.
Frequently Asked Questions
Is format detection reliable?
Yes, it is based on the bytes inside the archive, not the file name.
Can I compare two archives?
For direct entry comparison use Compare ZIP Files; this page sums up a single archive.
What does stored size mean?
The total size of the entries as they are kept inside the archive.
Is this safe to use?
Yes, it only reads the archive directory and never extracts or executes anything.
What is the unpacked size?
The total size the entries would occupy once extracted.