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Create ZIP Archive Online

Pack files or a whole folder into one .zip archive in your browser, with folder paths kept and duplicate names handled.

Add files

The ZIP is built in this tab. Files are never uploaded.

Files and folders you add appear here before the archive is built.

Your archive

Add files to begin.

The finished .zip appears here. Up to 500 files and 150 MB per archive.

Your file is never sent to a server. It is read and processed by your own browser, and the results are not stored.

How to use it

  1. Choose files with the picker, or choose a folder to keep its structure.
  2. Review the list, remove anything you do not want, and name the archive.
  3. Build the ZIP and download it.

Limits worth knowing

  • Up to 500 files and 150 MB in total before compression. The archive is produced in this tab, so these are memory ceilings rather than commercial limits.
  • Folders are only kept when the browser provides a folder selection or relative paths. A flat multi-file pick has no folder information to preserve.
  • Files that are already compressed — JPEG, PNG, MP4 and similar — will shrink very little. The page does not claim a compression ratio it cannot deliver.
  • Empty folders are not included, because a picker cannot hand the browser an empty folder.

How the archive is built

Files are added to a ZIP container in the order shown, with deflate compression at a balanced level. Folder-relative paths are preserved and sanitised: parent-directory segments are removed rather than resolved, so an entry can never climb out of the folder it is extracted into.

Duplicate paths are made unique before writing. A ZIP that contains two entries with the same name keeps only one of them when extracted, which silently loses a file; the tool numbers the repeats instead.

When a ZIP helps, and when it does not

A ZIP is the right answer for sending many small files as one attachment, for text-heavy folders where deflate genuinely saves space, and for preserving a folder tree that email would flatten.

It is the wrong answer for shrinking a folder of photos. Most image and video formats already use compression, so the archive will be close to the sum of its parts. The tool reports the real output size after building so there is no guesswork.

Frequently asked questions

Does Create ZIP Archive Online upload my files to any server?

No. Create ZIP Archive Online runs in your browser, and the file is read there rather than sent to a server for processing. Our host still sees ordinary page-request metadata, which is described on the privacy page.

Is Create ZIP Archive Online free to use?

Yes, Create ZIP Archive Online is free, with no paid tier, no account, and no watermark added to your output. The limits are technical rather than commercial: file size, page count and supported formats are listed on this page.

What file formats and sizes are supported?

Create ZIP Archive Online supports standard files files up to 150MB directly in your browser.

Can I ZIP a whole folder and keep its structure?

Yes. Choose a folder with the folder picker and the archive keeps the relative paths, so subfolders arrive intact when the ZIP is extracted. Dragging a folder onto the drop area also works in browsers that supply folder entries.

Does ZIP compression make photos much smaller?

Usually not. JPEG, PNG, WebP, MP4 and most modern formats are already compressed, so deflate saves little or nothing. ZIP is most useful as a single container for many files, and for text, logs, CSV and uncompressed data where the saving is real.

Is there a limit on how many files I can add?

Up to 500 files and 150 MB in total before compression. Those ceilings exist because the archive is built in this tab; beyond them the page risks running out of memory.