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ZPAQ file: what it is and how to open it

Zpaq Archive. Here is what a .zpaq file contains, how to open one on any device, and a viewer that opens it right in your browser.

Open a .zpaq file hereChoose fileRead in your browser. Nothing is uploaded.

What the viewer shows

  • Whether the file matches the .zpaq signature
  • The first bytes as hex
  • A preview when your browser can display it

What is a .zpaq file?

A .zpaq file is a zpaq Archive. Its registered MIME type is application/x-zpaq, which places it in the application or document family of formats.

ZPAQ is a binary format: the contents are not readable text, so opening it in a text editor shows scrambled characters.

Files of this type usually begin with the bytes 37 6B 53 74. That signature is how programs recognise the format even when the extension is wrong or missing.

ZPAQ file format details

Extension.zpaq
FormatZpaq Archive
MIME typeapplication/x-zpaq
CategoryApplication or document
Text or binaryBinary
File signature37 6B 53 74
Registered with IANANo
Other extensionsNone

How to open ZPAQ files

WindowsZPAQ files (Zpaq Archive) are made by specific software. The reliable way to open one is with the program that created it; a generic viewer will only show raw data.
MacThe same applies on a Mac: look for a Mac version of the program that makes ZPAQ files.
iPhone and iPadPhones rarely open this type of file directly. The viewer above can show what is inside it without installing anything.
AndroidThe same applies on Android. The viewer above shows the first bytes of the file so you can confirm what it is.

Can you convert a .zpaq file?

TapToConvert does not convert ZPAQ files. The usual route is to open the file in the program that made it and use its Export or Save as option.

ZPAQ file FAQ

What is a .zpaq file?

A .zpaq file is a zpaq Archive, with the MIME type application/x-zpaq.

How do I open a .zpaq file?

With the program that created it. The viewer on this page shows what is inside without installing anything.

Is a .zpaq file safe to open?

ZPAQ files hold data rather than programs, but any file from an unknown source can be crafted to exploit the software that opens it. Keep that software up to date. The viewer on this page only reads the bytes and never runs anything.

What is the MIME type of .zpaq?

application/x-zpaq. Web servers send this type so browsers know how to handle the file.

Is ZPAQ a text or binary format?

Binary. Its contents are not readable as text.

File type facts come from the IANA media type registry, the mime-db project and the freedesktop.org shared MIME database.

Similar file types

Try MP4 to MP3, HEIC, merge PDF or compress video.