Create ZIP File
Create ZIP archive files in your browser
Supports up to 700 MB total. Zipping runs in the background — this tab stays responsive.
Click to add files
About Create ZIP File
Create ZIP File puts several files into one ZIP archive inside your browser, in your browser so the page stays usable, with a progress bar and a Cancel button. You choose the compression level, from store-only to the strongest DEFLATE setting. An optional password encrypts the contents with AES-256 (WinZip AE-2), never the weak old ZipCrypto; file names stay readable, as in every ZIP. Files are placed at the root of the archive under their own names, without folders. The archive is always called archive.zip.
How to create a ZIP file
- 1Click "Click to add files" and choose the files; add more the same way.
- 2Take out a wrong file with "Remove".
- 3Pick the "Compression level".
- 4To protect the archive, check "Protect with a password (AES-256)" and type it in "Password" and "Repeat the password".
- 5Click "Create ZIP", then "Download" to save archive.zip.
Formats and limits
- Total size on a computer
- Up to 700 MB for all files together
- On phones and tablets
- Up to 100 MB in total
- Compression
- Store only, or DEFLATE at level 1, 6 (the default), or 9
- Encryption
- Optional AES-256 in the WinZip AE-2 format; file names are not encrypted
- Output
- archive.zip, with every file at its root
Where your file is processed
The archive is built in a Web Worker in your browser, with JSZip, or with zip.js when a password is set; the files are not uploaded. The password is used inside that worker and not stored, so a lost password cannot be recovered. A failed archive leaves one cleaned error line in our log, naming the tool and your browser; the files themselves never travel.
Frequently asked questions
Can other programs open a password-protected ZIP made here?
Yes, programs that read AES-encrypted ZIP files in the WinZip AE-2 format can. In our test, bsdtar (libarchive) extracted such an archive byte for byte and refused a wrong password. Accented passwords may be read differently by some programs, so letters, digits, and English punctuation are the safest.
Is there a size limit?
Yes: 700 MB in total on a computer and 100 MB on phones and tablets. The archive is built in the memory of the browser tab, and these caps keep the tab from running out of it.
Does compression help for photos and videos?
No, very little: JPG, MP4, and ZIP files are already compressed, so the store-only level is quicker and the archive barely grows. Text, CSV files, and uncompressed images shrink much more at the stronger levels.
Can I add folders?
No. Files are added one by one and stored at the root of the archive under their own names. Rename files that share a name before adding them, so each one keeps its own entry.