ZIP Create & Extract

Bundle files into a .zip or unpack one — entirely in your browser.

Bundle files into a .zip or unpack one — entirely in your browser. Free and 100% private — runs entirely in your browser, nothing is ever uploaded.

About ZIP Create & Extract

ZIP Create & Extract is a free, browser-based tool for bundling several files into one .zip archive or opening an existing .zip to list, preview, and download its contents. It is built on the fflate library and runs 100% in your browser, so your files are never uploaded to any server. Reach for it when you need to combine a handful of files into a single download, or quickly peek inside a .zip without installing WinZip, 7-Zip, or any desktop app. Note: it does not open password-protected (encrypted) archives.

How to use ZIP Create & Extract

  1. Open ZIP Create & Extract and choose the Create or Extract tab at the top.
  2. To make an archive, stay on Create and drag your files onto the drop zone (or click to browse). Add as many as you like; identical files are skipped and duplicate names are auto-renamed to a foo (2).txt style.
  3. Review the staged file list and the Files and Total size stats, remove any file with its trash icon, then click Download .zip to save a single archive.zip.
  4. To open an archive, switch to Extract and drop a .zip onto the zone. The tool lists every entry sorted by name with its size and the total uncompressed size.
  5. Click the eye icon next to a text file (txt, md, json, csv, code, and similar) to preview its contents inline, or click the download icon to save just that one file.
  6. Click Close to clear the archive from the tool when you are finished.

Frequently asked questions

Are my files uploaded anywhere when I zip or unzip them?
No. ZIP Create & Extract does all of its work in your browser using the fflate library. The files you bundle or open never leave your device and are never sent to a server, which makes it safe for sensitive documents.
Can it open password-protected or encrypted zip files?
No. Encrypted (password-protected) zips are not supported. If you drop one in, the tool will tell you the archive is password-protected and stop. Use a desktop tool that supports AES/ZipCrypto for those.
Is there a file-size limit?
There is no hard limit, but the whole archive is held in memory (input, output, and intermediate buffers), so very large jobs can be slow or fail in a browser tab. The tool warns you once the staged files exceed about 200 MB.
Why is my created .zip not much smaller than the original files?
By design, the Create mode stores files without re-compressing them (store mode). Most everyday payloads such as images, PDFs, and existing zips are already compressed, so squeezing them again wastes time for little gain. The .zip mainly bundles many files into one convenient download.
Can I preview what is inside a zip before extracting?
Yes. In Extract mode, the tool lists every entry with its name and size, and text-like files (txt, md, json, csv, source code, and more) get an inline preview when you click the eye icon, so you can check contents before downloading anything.
Does it download all extracted files at once?
Extraction is per-file: each entry has its own download button so you can grab exactly the files you need. To combine files into a single download instead, use the Create mode.