ZIP Maker & Extractor

No. Both zipping and unzipping run entirely in your browser with the fflate library, so your files never leave your device — there is no server and nothing is stored.

Yes. Those formats are ZIP archives under the hood, so you can drop them into Extract mode and browse or download the files inside, such as the XML parts of a Word or Excel document.

Yes, unless you choose otherwise. By default entries use the standard ZIP DEFLATE method at the Normal level, so text, code and documents shrink while already-compressed formats like JPEG or MP4 stay about the same size; Compression can pick Fast or Smallest instead, or None, which stores the files as they are. The result opens in Windows Explorer, macOS Finder, 7-Zip and other ZIP tools.

Yes. Drop the folder on the Create zone, or press “Add a folder” and pick it, and every file inside goes into the archive under its path, so photos/trip/a.jpg is still in its folder when the ZIP is opened. Empty folders are not kept, since a ZIP of files has no entry for them. A folder holding a very large number of files and subfolders is refused with the limit named — add it in parts — and each file inside is held to the same size limit as a file added on its own.

Yes. “Show as” switches the contents from One list to Folders, where each folder opens and closes with a click and says how many files are under it. Every entry has a Preview button: an image is drawn and a text file shown on the page — the first part of a long one, with a line saying the download has the rest — and anything else says it cannot be shown. Tick entries, or “Select all”, and “Download selected” packs just those, paths kept, into one ZIP.

Yes. Type it in “Archive name”, under the compression choice. The characters no file system accepts are taken out, and .zip is added when you leave it off. Left blank, the archive is named after the first file in the list — photo.jpg makes photo-archive.zip.