ZIP File Creator
ZIP File Creator adds every selected File under its browser filename to a JSZip archive, requests DEFLATE compression, and downloads archive.zip. It does not preserve directory paths, timestamps deliberately, permissions, symlinks, extended attributes, encryption, or password protection. Duplicate names can collide inside the archive, and already compressed media may shrink little or even grow.
Runs locally — files stay on your deviceDoes the created ZIP use a password?
No. This tool provides no encryption or password protection.
Archiving and compression are different concerns
ZIP groups entries into one container and may compress each entry. Packaging alone does not provide confidentiality or authenticity.
How it works
Selected files are added by filename to a new JSZip object, generated as a Blob with DEFLATE, and downloaded as archive.zip.
Key concepts
Flat input set
Only selected names are supplied; directory context is not captured.
Name collisions matter
Two entries with the same name cannot be distinguished reliably in this flat workflow.
When to use it
- Bundle several ordinary files for one download.
- Compress text-heavy assets locally.
- Create a simple flat archive.
When not to use it
- Do not use it for confidential data requiring encryption.
- Do not expect folder hierarchy or full metadata preservation.
- Do not assume every file becomes smaller.
Worked examples
Text bundle
- Input
notes.txt + data.csv- Expected output
archive.zip
Text often compresses well.
JPEG collection
- Input
photos- Expected output
Possibly little reduction
JPEG data is already compressed.
Same names
- Input
Two report.pdf files- Expected output
Collision risk
No automatic unique naming is implemented.
Common mistakes
Calling ZIP encrypted
No password or encryption is applied. Correction: Use an audited encrypted archive workflow.
Expecting folders
Browser selection provides flat filenames here. Correction: Use a directory-aware archiver.
Ignoring duplicate names
Entries can overwrite or become ambiguous. Correction: Rename uniquely before archiving.
Best practices
- Keep originals and inspect the archive.
- Use unique, portable filenames.
- Choose a secure encryption tool when confidentiality is required.
Related operations and differences
ZIP File Extractor
Choose ZIP File Extractor when you need to extract a ZIP locally into a safe download archive.; use ZIP File Creator specifically for zip create.
Add Prefix to Filenames
Choose Add Prefix to Filenames when you need to add a prefix to selected filenames.; use ZIP File Creator specifically for zip create.
Add Suffix to Filenames
Choose Add Suffix to Filenames when you need to add a suffix before every extension.; use ZIP File Creator specifically for zip create.
Compare Two Files
Choose Compare Two Files when you need to compare two files securely by SHA-256.; use ZIP File Creator specifically for zip create.
File Checksum Comparator
Choose File Checksum Comparator when you need to compare a file digest with an expected checksum.; use ZIP File Creator specifically for zip create.
File Hash Calculator
Choose File Hash Calculator when you need to calculate a local cryptographic file digest.; use ZIP File Creator specifically for zip create.
Limitations and privacy
- No encryption, password, hierarchy capture, metadata guarantees, split volumes, compression controls, progress, or integrity verification after download.
- All output is generated in memory.
- Duplicate-name behavior is not guarded.
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
What is the download name?
archive.zip.
Are originals deleted?
No.
Will every file shrink?
No.
Are folders preserved?
No directory context is supplied by this page.