Are ZIP files uploaded to a server?

No. ZIP archive metadata is parsed locally in your browser session.

Does the tool extract every file?

No. It reads the ZIP central directory to compare file paths, sizes, CRC32 values, compression methods, and modified times without extracting file contents.

Compare ZIP Files Online

Compare two ZIP archives in your browser. Review files added, removed, or changed by path and metadata; this tool does not show text differences inside archived files.

Browser-side ZIP comparison

ZIP files are parsed locally in this browser. The tool reads archive metadata and does not upload your files.

Original archive

Modified archive

Review archive inventories

Use ZIP comparison to check package releases, backup snapshots, exported folders, and delivery bundles before sharing or archiving them.

Compare metadata without extracting

The comparison uses archive metadata such as path, file size, compressed size, CRC32, compression method, and modified time.

Catch missing or changed files

Quickly spot files that were added, removed, changed, or left untouched between two archive versions.

For release checks, read our ZIP archive comparison guide .