ZIP File Extractor
ZIP File Extractor does not download entries individually or write them directly into folders. It loads only the first selected ZIP with JSZip, skips directory entries, copies every file entry—including its stored path name—into a new uncompressed-by-default archive, and downloads extracted-files.zip. It provides no password support, size limits, antivirus scan, path review, archive-bomb protection, or proof that nested file content is safe.
Runs locally — files stay on your deviceWhat does this extractor download?
A newly repackaged ZIP named extracted-files.zip containing the source archive's non-directory entries.
Repacking is not security sanitization
Parsing an archive and writing its entries into another container can avoid direct filesystem extraction, but it does not make embedded files trustworthy or harmless.
How it works
JSZip loads the first selected archive, each non-directory entry is expanded to a Blob and added under its existing entry name to a new JSZip object, then the new ZIP is downloaded.
Key concepts
First selection only
Additional selected archives are ignored.
Entry paths remain
Non-directory filenames are reused when constructing the output archive.
When to use it
- Repackage a small, ordinary ZIP locally.
- Remove explicit empty-directory entries.
- Obtain one new archive containing only file entries.
When not to use it
- Do not open untrusted contents without security controls.
- Do not process encrypted, huge, or archive-bomb candidates.
- Do not expect individual extracted downloads or folder selection.
Worked examples
Simple archive
- Input
docs.zip- Expected output
extracted-files.zip
Files are decompressed then repackaged.
Archive with empty folders
- Input
folders.zip- Expected output
Empty folder entries omitted
Directory entries are skipped.
Two ZIPs
- Input
a.zip and b.zip- Expected output
Only a.zip processed
The first File object is loaded.
Common mistakes
Assuming “safe” means scanned
No malware or content scan runs. Correction: Treat every resulting entry as untrusted.
Expecting loose files
The output is another ZIP. Correction: Use a trusted extractor after downloading if appropriate.
Ignoring expansion size
Compressed input can expand dramatically in memory. Correction: Inspect untrusted archives with bounded tooling.
Best practices
- Use only known, reasonably sized archives.
- Scan and inspect resulting files before opening.
- Use sandboxed, size-limited infrastructure for hostile input.
Related operations and differences
ZIP File Creator
Choose ZIP File Creator when you need to create a compressed ZIP from selected files.; use ZIP File Extractor specifically for zip extract.
Add Prefix to Filenames
Choose Add Prefix to Filenames when you need to add a prefix to selected filenames.; use ZIP File Extractor specifically for zip extract.
Add Suffix to Filenames
Choose Add Suffix to Filenames when you need to add a suffix before every extension.; use ZIP File Extractor specifically for zip extract.
Compare Two Files
Choose Compare Two Files when you need to compare two files securely by SHA-256.; use ZIP File Extractor specifically for zip extract.
File Checksum Comparator
Choose File Checksum Comparator when you need to compare a file digest with an expected checksum.; use ZIP File Extractor specifically for zip extract.
File Hash Calculator
Choose File Hash Calculator when you need to calculate a local cryptographic file digest.; use ZIP File Extractor specifically for zip extract.
Limitations and privacy
- First selected ZIP only.
- No password, encryption, multipart, bomb defense, explicit size/entry limits, malware scan, preview, selective extraction, or path audit.
- All entries and the output archive can occupy substantial browser memory.
Processing happens in this browser. Selected file contents are not uploaded by this tool.
Downloads and copied results remain on this device; handle them according to their sensitivity.
Frequently asked questions
Are files downloaded separately?
No.
Is the output guaranteed safe?
No.
Are empty directories retained?
No.
Can it open password-protected ZIPs?
No password workflow is provided.