Zip files online

What a ZIP file is

A ZIP is a single container holding any number of files and folders, each individually compressed. It has been the standard way to bundle files since the early 1990s and is opened natively by Windows, macOS, iOS, Android and every Linux desktop without extra software. That universality is the main reason to use it: one attachment instead of twenty, one download link instead of a folder full of them, and the recipient does not need to install anything.

What compression actually saves

ZIP uses DEFLATE compression, which is very good at squeezing text, spreadsheets, source code, uncompressed images and databases, and does almost nothing for files that are already compressed. In practice:

So a ZIP of photos is barely smaller than the photos, but it is still one file, which is often the point. If the goal is a smaller photo set, compress the images first and then zip them.

Compression levels

Store does no compression and is instant; use it for photos, video and anything already compressed. Normal is the sensible default. Maximum spends more time for a small extra gain, worthwhile for large text-heavy archives and pointless for media.

Practical uses

• Sending a project folder of documents to a client as one attachment.
• Bundling exported reports, invoices or statements for an accountant.
• Packaging a website's files or a font family for delivery.
• Collecting a set of photos into a single download for a shared album.
• Keeping a dated snapshot of a folder for backup.

Zipping files on Windows, Mac and phones

Every desktop system can make a ZIP without extra software, and this page does the same job in any browser:

• Windows 11: select the files, right-click and choose Compress to ZIP file. On Windows 10 it is Send to, then Compressed (zipped) folder.
• Mac: select the files, right-click and choose Compress. The ZIP appears next to the originals.
• iPhone and iPad: in the Files app, select the files, tap the three dots and choose Compress.
• Android, Chromebooks and locked-down work computers: built-in options vary or are missing, which is where the tool above helps. Drop the files, create the ZIP and download it.

Once zipped, the archive can be opened again with our unzip tool or any system's built-in extractor.

How this differs from other online ZIP sites

Most online ZIP makers upload your files to their server, build the archive there and send it back. That costs time on a slow connection, usually comes with a size cap, and puts your documents on a computer you know nothing about. Here the archive is built on your own device: it starts straight away, there is no upload limit or waiting queue, and once the page has loaded it even works offline.

Sending the ZIP

Email services cap attachments: Gmail and Yahoo at 25 MB, Outlook at 20 MB. If your ZIP is bigger, check what is inside. Photos, videos and scanned PDFs barely shrink in a ZIP, so make them smaller first with Compress images, Compress video or Compress PDF, then zip the results. For anything still too large, share it through a cloud storage link instead.

Limits to know about

The archive is built in your browser's memory, so a few hundred megabytes is fine on a laptop, while several gigabytes may not be on a phone. Folder structure is kept if you drop a folder. File names with characters outside the basic Latin set are stored in UTF-8, which every modern unzipper reads correctly. Nothing is uploaded at any stage, so the files inside stay private.