Estimate Compression
Inspect · ZIP
1. Drop your files
Drop files or a folder here or click to browse
Select one or more files
2. Run the estimate
We compress your files four times — once at each level — and report the resulting archive size and time taken. Nothing is uploaded; the four passes all run in this tab.
Related tools
- Inspect ArchiveView the contents, sizes, and metadata of any archive without extracting it.
- Compare ArchivesDiff two archives: see files unique to each and shared files with size differences.
- Checksum ArchiveSHA-256 and SHA-1 for a ZIP archive and every file inside. Verify integrity without uploading.
- Create ZIPCombine files and folders into a ZIP archive with adjustable compression levels.