ZIP / UNZIP Online

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Create or extract ZIP archives in your browser.

Nothing Is UploadedRuns In This Browser TabNo Account Needed

How It Works

1

Upload / Input

Select your files or paste your content to get started.

2

Process

The work happens in this browser tab. Your file never leaves your device, so nothing is queued, stored or transmitted.

3

Download / Result

Get your results instantly. Download files or copy output in one click.

Features

Create a ZIP from any number of files
List an archive’s contents before extracting
Download individual files or the whole archive
Unpacks stored and DEFLATE entries, and flags anything it cannot
Correct CRC-32 checksums, so unzip and 7-Zip accept the output

How to use ZIP / UNZIP Online

  1. Choose the operation

    Create an archive from files, or open an existing one to extract.

  2. Add your files

    Everything is processed in your browser — nothing is uploaded.

  3. Bundle or unpack

    Creating an archive bundles the files without compressing them. Opening one lists every entry with its size and whether it can be unpacked here.

  4. Download

    Save one file at a time with the Save button beside it, or take everything at once. Verify the extracted files open correctly before deleting the archive.

When to use ZIP / UNZIP Online

  • Bundling several files into one attachment for email
  • Opening a ZIP on a device with no archive software
  • Reducing the size of a folder of documents before sharing
  • Extracting a single file from a large archive

FAQ

Processing happens in your browser, so the limit depends on your device memory. Most files under 500 MB work without issues. ZIP64 archives, which is what a ZIP larger than 4 GB becomes, are not supported.
No. RAR and 7z are different formats that need their own decoders, and no browser ships one. Open those with 7-Zip, WinRAR or The Unarchiver, then re-zip the contents here if you need a ZIP.
No. Encrypted entries are listed and marked as password-protected, but they cannot be decrypted here. Unlock the archive with desktop software first.
No — they are stored rather than compressed, so the archive is roughly the sum of its contents plus a small header per file. The useful half of ZIP is the bundling: one attachment instead of thirty. Most of what people zip (photos, PDFs, video) is already compressed and would barely shrink anyway.
Because it is stored rather than compressed. The archive bundles the files and adds a small header to each one; it does not shrink them. If size is what you need, a desktop archiver compressing text or documents will do considerably better.
No. Bundling and extraction run in your browser, so the contents never leave your device.
Only weakly. Standard ZIP encryption is dated and not a serious barrier. For genuinely sensitive material, encrypt the documents themselves rather than relying on the archive. This tool cannot open encrypted entries in any case.
Many mail systems refuse or quarantine ZIP files because archives have long been used to deliver malware. Sending a link is more reliable for anything of size or importance.

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About ZIP / UNZIP Online

ZIP does two things at once: it bundles many files into one, and it compresses them. The bundling is the more useful half — one attachment instead of thirty is a genuine convenience regardless of any size saving — and it is the half this tool performs. Archives created here are stored rather than compressed, so the result is about the size of its contents plus a small header per file.

That trade is deliberate. Most of what people put in a ZIP is already compressed: photos, video, music and PDFs all carry internally compressed data, and squeezing them again saves a percent or two for a lot of work. Text, spreadsheets and source code would genuinely benefit, and for those a desktop archiver will produce a smaller file. Archives you open here are a different matter: compressed entries are unpacked normally, using the decompressor built into the browser.

A practical note on email: many mail systems block ZIP attachments outright, or scan and quarantine them, because archives have historically been used to smuggle executables. If a zipped attachment does not arrive, that is usually why — a shared link is more reliable for anything substantial.

Tips and limits

  • Archives created here are stored, not compressed — use a desktop archiver if you need the size saving.
  • Many email systems block or quarantine ZIP attachments — use a link for anything important.
  • Password-protected entries are listed but cannot be opened here; unlock them with desktop software first.
  • Extract into a new empty folder so you can see exactly what the archive contained.
  • Large archives need memory to process in a browser; very large ones may be better handled by desktop software.
  • ZIP64 archives — anything over 4 GB, or with more than 65,535 entries — are not supported.