ZIP Contents Viewer
Open a ZIP archive in the browser and list each entry name with its uncompressed byte size.
How to use
- Choose a .zip file and run to inspect its internal paths and sizes.
Capabilities and scope
fflate unzipSync expands the whole archive in memory and each entry Uint8Array length is formatted as B/KB/MB/GB.
How it works
ZIP bytes are passed to unzipSync; Object.entries then produces one line per name and uncompressed data.length.
Example
A ZIP containing docs/readme.txt and images/a.png shows both paths and their expanded sizes.
Useful for
- Inspect archive contents before extracting them to a folder
Before you use it
- This is a list view, not per-entry downloading, and full in-memory decompression can be expensive for large or highly compressed archives.
Frequently asked questions
Are the displayed sizes compressed sizes?
No. They are the byte lengths of the uncompressed entry data.