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File type: Adobe AIR Installation Package

About the .AIR file type

Invalid file associations could be the result of underlying issues within your Windows PC. It is highly recommended to scan your PC for invalid registry entries, unused processes and other slowdown issues.

It  is used by the installation files of the Adobe AIR programs. AIR is actually an acronym for the Adobe Integrated Runtime which is also described as a multi-platform environment used for executing Internet based programs from the user's desktop.
There are some Operating System platforms like the Microsoft Windows Vista which may erroneously handle this file type because it is locked by default in the registry. In these cases, the user has to explicitly define its appropriate file association to be used correctly during system runtime.
It provides support for developers in implementing proven Web-based technologies for building rich Internet programs with the inherent ability of running outside the browser environment regardless of the Operating System platform.
This technology provides users an innovative way of engaging customers without necessarily changing existing infrastructure.

How to open AIR Files

Category: Executable Installation Files
File format: Proprietary
Open with Windows: Adobe AIR
Open with Linux: Adobe AIR
The system behind the AIR extension is the same technology utilized for the creation of cost effective Web-based applications for rapid as well as low risk development and deployment.
Existing Web resources can be used for the development of engaging, branded programs running on majority of desktop Operating Systems.
The implementation of the AIR file provides the user with extensive benefits and enhances the implementation of RIA (Rich Internet Application) strategies.
They are intended to boost productivity, enhance customer satisfaction, lower operating cost, extend market share, increase profitability, and improve retention of customers.
The use of this technology is validated by major businesses such as NASDAQ, AOL, and eBay which have invested significant resources into the development of their systems.
It allows for the establishment of persistent connections, delivery of desktop functionality, leveraging of current resources, and increasing of return on investments for Web-based enterprise.


What is a WEBP File

On September 30, 2010, Google announced the publication of a new open standard for compression with 24-bit graphics loss on the web. The model for this standard was the VP8 video format. On2 Technologies developed it and Google acquired that on 2019.

Thereafter, Google expanded the WebP format with features such as a lossless compression mode, transparency (alpha channel) and animations.

Chrome supports the compression format since the end of 2010, but so far, as has happened with Opera, it has had to assume that many browsers only support WebP experimentally (such as Safari and Firefox, whose regular updates are still unsupported) .

According to its own statements, Microsoft would be currently working to support it in its own Edge browser.

How to open .WEBP Files

Can't? Problems or Inability to view and open the .webp file on your computer is a sign that you do not have the corresponding program to open it; though there may be a couple of other reasons, which are mostly technical.

All you have to do is to download the right program or tool to open it.


File Viewers

If you want to see images or animations encoded in WebP, you have several options at your fingertips:


Using Photoshop

To open a WebP file in Photoshop we will have to use a plugin that adds this compatibility to the Adobe tool.

The software in question is called WebPFormat and we can get it from this link. There we will find the links for the 32-bit and 64-bit version. So before downloading them we must make sure that we get the version that matches our system.

Once downloaded, the next thing we have to do is unzip the file that is saved on our hard drive. Inside the compressed file we will find a file with the name WebPFormat64.8bi, which corresponds to the plugin itself. Therefore, now it only remains to install it.




Open with

  1. Search for the .webp file in your device
  2. Double click on it
  3. Select open with option
  4. From the drop down list of apps and software select the viewer, app or program.
  5. If there is not any viewer in your device or computer. Then you will have to download one of the programs we mentioned in the previous section.



  1. Open one of the webp viewers installed:
    1. Browsers like Chrome or Opera
    2. Irfanview a free image viewer for Windows
  2. From the application go to the menu of files to open the .webp from your device.
  3. Now you can view the format in the app.


WEBP related extensions


Can't open a .webp file?

Other problems that may prevent you from accessing these files are below

  • If the drivers, the tools or equipment required is outdated.
  • The computer or Android device does not have adequate hardware resources that can cope with the easy opening of the .webp.
  • If the file that you want to open is infected with malware.
  • The tool or application for opening it is not installed.
  • If you accidentally delete the description from your Windows registry.
  • There is an incorrect link to the file in registry entries.
  • It is corrupt.
  • If you cannot resolve the problems y yourself, you can get in touch with trained it support to help out.

After resolving all the issues, your device should easily open it.


File type: binary compressed format


About the .XDF file type

A XDF file is a compressed format of binary file that has user levels of selectable compression. This is an implementation proprietary of Microsoft R Server.

XDF is an engineered native file format that helps in columnar data retrieval. The data in this format is available stored in blocks. It offers the benefit of distributed files systems that overwrites or appends the import operations at the block level.


How to open XDF files

Category: Executable Installation Files
File format: Proprietary
Open with Windows: ML R Server
Open with Linux: ML R Server

There is software such as ML R Server that allows the opening of XDF files.

However, without a proper software, a message on the Windows appears as ‘How do you want to open this file?’ or as ‘Windows cannot open this file’ in Windows 7 or as an alert in Mac/Android/iPhone.

In case you are unable to launch it correctly. There is a need to keep the files under long-press or even to try to right-click. It will 'Open with' click, and you get to choose the application.

This type of files does not open directly as it has no software. Besides, no information is available in this type about public sources.  This happens with internal data files, temporary files, caches, etc.

A quick way 

There are different software packages for different file extensions, and when you are unable to open an XDF file, it may be due to these reasons:

  • The file may be corrupt.
  • The associated software is not available on your computer.
  • There may be the required software or format image available, but it does not associate XDF files as it is not configured to the relevant software.


When there is relevant software, and your computer is unable to open the software, there is a need to change on Mac or Windows the file associations. Based on the operating system, ensure to open XDF files on your computer. Choose the program of your preference such that it uses XDF files.

Yet, if it fails to work, contact the software developer to know what to do. You may contact developers and acquire assistance or more information. In some instances, an error message may be received stating a file is corrupt. In case you try all the ways, and it fails to work, request, or download a new copy and ensure it works.

The XDF files normally open through a developed program. But you may also do it through File Magic, a universal file viewer. You may download it from the Microsoft Store in an easy way.


How to solve issues

  • Use suggested programs. Choose an app by right-clicking any XDF file. Select another program and check the box .Sdf files.
  • Update software to open binary file om r servers as it supports the format of the latest XDF file. For instance, the ML R Server update is on the website of Microsoft manufacturer.



Video file extensions and formats are of different types. This is not surprising because they each serve different purposes. As a video content creator or a videographer, you need to be aware of the various video file extensions of video formats out there. The knowledge can help you a great deal in your profession and help you to even create better videos.

 It is important to use the best video format when projecting your videos on big screens or when you are uploading the video on websites, like YouTube. Using the right video format will improve the quality of your video and make it more presentable to all who may want to watch it.

In the remaining part of this write-up, we will show you some of the most common video file extensions formats available out there today.

Containers, codecs and compression

Video files tend to be large and this is one of the most obvious challenges. The size of the files even gets larger with the use of high-resolution monitors and cameras that make both 8K and 4K accessible to the general public. The existing limitation in available bandwidth or storage space makes the issue of size a very important one. Consequently, each video file comes with a measure of compression degree and available in the codec form.

Video codecs

A video codec works by compressing and decompressing video files. The compression can either be lossless or lossy also.

The lossy type does the compression by creating smaller sizes of files. However, it leaves out some amount of data and this will cause the quality of the video to be somewhat low. This is apparent with a series of compression. The recurrent compression will culminate in the loss of a significant quantity of data in a cumulative manner.

The lossless type of compression, on the other hand, will safely keep every data from the original file and this will ensure a video with far better quality; it will equally prevent the progressive damage or degradation of the video files consequent of multiple saves. While the lossless type ensures better video quality, it will result in a large file since it does not leave out any of the files.

Most Common Video File Extensions

These are the most common video file types and their extensions:

  • HEVC (H.265), which makes video compression a lot more efficient than before.
  • MPEG-2, which came before MPEG-4 and was the standard codec for early versions of Blu-ray and DVDs discs. End-users that need video streaming software rarely use this since those who have such needs can access a better option.
  • DivX, which is among the oldest video code types and can maximize the quality of the video, while sacrificing the larger size of files. It also has use in various commercial settings where there is little concern about the size of the video file.
  • MPEG-4, which commonly streams videos and equally useful for the online streaming of videos. The compatibility range is very wide too.
  • H264, which is among the most common set of video codec formats and it is also among the most efficient codec. It comes with smaller sizes of files and will not require much download data or storage space. This video format is compatible with MP4 containers and you can play them on various streaming services and video players

Video containers

As its name implies, video container bundles all video elements and store all of them in a container or one package. Some of the elements thus stored are the codec, video metadata, subtitles, audio streams and so on. Each of the types of video containers is highly compatible with a particular video codec. The video editing software you use should only permit the end-user to select a compatible pairing. However, it must attempt to plan what container and codec that you will like to use far ahead of time as this will help you to avoid the occurrence of any issuer when the final video is being rendered.

Some of the most common examples of video containers are highlighted below

  • MP4, which is about the closest to a universal standard of video formats. It is compatible with several versions of video players.
  • WMV, which also means Windows Media Video. It has the smallest file size among all other video formats. It is a very good option if there is a need to send the video via various methods, including email. However, the quality is on the low side when you compare it to other formats in this category.
  • AVI, which is among the most universally accepted and also among the oldest video file formats available out there today.
  • FLV, which mainly works for Adobe Flash Player. The videos that come with this format are relatively common. The file size is small and you can play it on third party flash players. Be that as it may, its use is not as common as it was in times past.
  • MOV, which you can also call QuickTime player. It originates from Apple and works mainly for QuickTime player. The quality of the MOV video format is usually very high. Be that as it may, the volume of the file is very huge. One other factor worthy of consideration is the compatibility of this video format; it is not especially compatible with other non-QuickTime video players. Even at that, you can still play such videos on non-QuickTime players via several third-party video players.

Which one to consider

As a newbie choosing the right video format, you may get confused about the right one to choose. Most individuals involved in video creation go for either H.264 or MP4 when creating videos. Most individuals that upload videos on YouTube go for either of these formats. They go for either of the formats because it gives a mix of high quality and small file size. This format is also available on video cameras. Furthermore, it can be played on different types of devices, both mobile and otherwise.

What is your specific need? This is a very important question you should ask before you choose the right video format to use. You should also consider who your audience is, as well as, bear in mind how the audience will watch your videos.


For those who work with XML files regularly, opening such files with ease to view the data they contain will only make out work easier as we can work a lot faster with little or no inhibitions. Just in case you didn't know, there are several ways to open XML files.

Using only one method may not always be in your best interest, so read on to find out other ingenious ways to open them.

What is an XML File?

Before we proceed, it will be wise for us to first understand in technical detail what an XML file is.

XML stands for Extensible Markup Language. These are basically standard ASCII text based files and hence can be opened or edited using any standard text editor. These files use tags for defining objects as well as objects attributes. These files are formatted in a similar manner as HTML documents but usually contain custom tags which have no meaning in HTML for defining of the custom data they are meant to hold.


XML files have picked up popularity in the recent past due to their ease of parsing and small size enables them for ease of transferring over the internet quickly. XML files are used very commonly today in technologies such as SOAP, Web Services, AJAX, etc where the underlying data is all communicated to and from the servers in XML files.

For starters, it is a language markup curated by the W3C (World Wide Web Consortium) to define a selected series of syntax for document encoding.

These codes are readable by both humans and computers through tags. Similarly to Hypertext Markup Language (HTML), which also uses shortcodes, the only difference is that XML uses a longer and more extensive code to describe its format.

What’s more? the users can use their own special markups to describe their own content in a defining way. This, along with its ease of use, is one of the reasons why this format is widely used by many. To clearly distinguish HTML from XML, let’s say that

  • HTML is used for content presentation
  • XML is used as a dedicated storage platform for data language description 

Some common document formats that use XML include 

  • ATOM and RSS – Describe how your reader handles news feeds
  • Microsoft.NET – Is used to configure files 
  • Microsoft Office 2007 and Subsequent Versions – Structures documents. Eg. What X represents in.DOCX

How Do you Open an XML File?

Now that we have given you a brief overview of what is and what it is used for let us show you how to open one directly.

1. Use a Text Editor

If you work with XML files all the time, you can hasten the process by using a Text Editor. However, you should know that a lot of Editors are not designed to display your XML files in a proper structure. What this means is that the file will come out differently from what you are often used to. Text Editors are best used to open them so as to take a quick look. To use a Text Editor, just do the following.

  • Right-click the file you wish to open
  • Point your cursor to “Open With” on the menu
  • Click “Notepad”

This action will open the file within seconds.

NB: Text Editors are suitable for glancing the data in the XML file. If you want to work extensively with or on their data, an Editor may not be an ideal tool.

2. Use your Web Browser 

If you do not intend to edit the file, you can use a Web Browser to view the structured data it contains. You can even use the browser you are using to read this article to view the file or files. It may also interest you to know that most browsers have default settings, which are set as a default viewer for XML files. To open with a Web Browser, follow these steps.

  • Double click the XML file with your cursor 
  • When the file opens, it will display a structured data
  • Scroll through the data to view

NB: The data will be clear to see but will not be as colorful as what is obtainable with Notepad++.


3. An Online Editor 

Do you know that you can do more than just the viewing of an XML file with an Online Editor? You can also edit and convert them too. If you wish to edit the data but you don't want to go through the stress of downloading a text editor, you can download a free Online Editor. An Online Editor can be used for conversion purposes. Some very good Online Editors are


These websites can enable you to view and edit your XML files. Once you are done with the edition, you can then re-download the file or convert it to a different format of your choosing.


4. Use the XML- JSON for conversion 

Another very easy way to open your XML file is to the following 

  • Use the Export to CSV key to saving your file in comma-separation
  • You can also use the download command to download changes made to the XML file


These four steps above are very simple steps to open and even convert your XML files.

Although you can use any of them, it is often best to use the option that offers you the best results based on your personal preference. If you only want to view the file, it is best to use a Text Editor or a Web Browser. If you intend to convert the file to a different format, XML/JSON converter or an Online Editor will be appropriate.

File type: Calendar file, CALS raster, Cakewalk Application Language script, CyberAudioLibrary link, Daqarta Extended audio data, digital camera firmware update, QV Map Geographic coordinates, radiance function file format, schedule data, superCalc worksheet


Problem with a CAL file? Does your computer fail to open?  Know here what CAL files are and how to open your CAL files.


What is a CAL file?

The file extension Cal is commonly associated with calendar and scheduling applications. The CAL files have the events and dates included in the calendar schedule. It may contain for each calendar month custom images.

Among the many uses of the CAL file extension is to name the calendar files of many applications. These include:
  • American Greetings CreateaCard,
  • PrintMaster,
  • Broderbund software,
  • Printmaster,
  • DOS Calendar Creator,
  • MS Windows 3.x Calendar,
  • HTML Calendar Maker Pro,
  • and Print Shop.
cal image
Similar to its function as a calendar file, the CAL file extension also names CALS Raster files. This is another bitmap format file developed during the 1980s.
Back then, it was the standard graphics data interchange for electronic publishing for the government. The name CALS is the acronym for Computer Aided Acquisition and Logistics Support.
Today, that same extension is for several graphics applications like:
  • the Adobe Photoshop,
  • Graphics Converter Pro,
  • PhotoPhilia,
  • and Paint Shop Pro.


CAL files are developed in the 3ds Max software that is used for 3D modeling and animation. It has the Biped characters stored in FIG files in association with CAL files can be.


How to Open CAL files?


Unable to open CAL files on the computer may be due to various reasons. The foremost reason is lacking suitable software to support CAL installed on the device. The simplest way of solving this issue is to download the appropriate application.


Category: Graphic files, Data files, Script files, Audio files
File format: Proprietary
Open with Windows:
  • Broderbund Print Shop,
  • Calendar Creator,
  • American Greetings CreateaCard,
  • Adobe Photoshop,
  • Corel Paint Shop Pro Photo X2,
  • Graphics Converter Pro,
  • Cakewalk Application Language,
  • CyberAudio, Daqarta,
  • DOS Calendar Creator,
  • HTML Calendar Maker Pro,
  • PhotoSmart 850 Digital Camera,
  • QV Map, Radiance Function,
  • SuperCalc,
  • MS Windows 3.x Calendar
Open with Linux:
  • Broderbund Print Shop,
  • Printmaster,
  • Adobe Photoshop
Moreover, the CAL file works as an application language script file for Cakewalk. This is a programming language used to process various events. Cakewalk can be used to extend Pro Audio as well as Professional with its custom-editing instructions.
The CAL file extension is also an audio file for Daqarta, an audio application to produce better performance of the Windows sound card. CyberAudioLibrary also use the CAL file extension as its audio file.
Meanwhile, this file extension works as a useful coordinates file for the QV Map Geographic. This application creates a topographic file with the PNY file extension. This file is used for some GPS applications. The CAL file extension works as a geographic coordinates for every PNY file.


Likely problems with CAL format files

The inability to operate or open the CAL file always does not mean you have not installed the software on your computer. Other issues are blocking the ability to operate the CAL S Raster Image Format File. However, here is a list of likely problems opening the CAL files:

  • CAL file corrupted when it is being opened.
  • Incorrect links in registry entries to the CAL file.
  • Accidental deletion of the CAL description from the Windows registry
  • Incomplete installation of application supporting the format of CAL.
  • The CAL file gets infected when it is open with some undesirable malware
  • The computer lacks hardware resources to handle the CAL file opening
  • Equipment drivers used by the computer are out of date to open a CAL file.


If you are certain that any of these reasons exist or maybe the problem in your case, you should check. If not, the CAL file will operate without any problem with your programs.

Also, If the CAL file problem is not any of all these likely issues. Then it may be some rare problem in the opening of the CAL file. The only option now is to seek staff assistance.


How to associate with installed software?


If you wish to associate CAL file with some new program, you can do it in two ways:

  • The easiest and the first way is to select a CAL file and right-click on it.
  • From the drop-down menu, ‘choose default program'.
  • Click on ‘Browse' to find the desired program.
  • You should confirm this operation entirely by clicking ‘Ok.'


  • The tough and second way is to associate the file extension of CAL in the Windows Registry to the corresponding software.


Many files just contain simple text data. If you try to open the file with a text editor like notepad. Then some data will be encoded.

This method facilitates you to glance at the file’s contents, but it may not be possible to see in a structure as a program actually supports to dedicate seeing them.




What is a .PDG file?

The .PDG file is essentially a special file created by Chaoxing Digital Library and created in association with Chaoxing Reader. You will need to first download the special reading tools for this file and then install it on your computer system. The name of the reading tools to download is Chaoxing reader, which is also called ssreader. Aside from reading the book, it is also possible to use the reader to scan the Chaoxing information collection network resources.

How to open PDG files

You will have to use suitable software readers to open the .PDG file, a good example of which is the Chaoxing reader.

If you do not have the right software to open the file on your computer, you will see a Windows message that reads thus: "How do you want to open this file?" if you are using Windows 10 and you will get "Windows cannot open this file" if you are using Windows 7. You will receive something similar to any of the messages above if you are using any other operating system, like Android, iPhone or Mac operating system. If you find it difficult to open the file, then you can long-press or right-click on the file. A drop-down menu will show up. Look for "Open with" and click on it and choose an application with which you can open the file.

You need to understand that different types of programs and files can bear the same extension and this can make it difficult for an end-user to know the best program to use for opening a file with a particular extension. If you find it difficult to open the pdg file, you can try any of the tips given below to open it.

Use another software program

If a particular software fails to open the pdg file, all you have to do is to use another file entirely. Bear in mind that this file is the type that can be opened using a different file entirely if the right program is not available on your computer, you can search for it online and download it to open this file. One of the best programs you can consider for this purpose is MetaCAM part File. Other types of programs that can successfully open this type of file are:

  • Chaoxing reader
  • Chaoxing Digital Library e-book
  • PrintShop Deluxe File

You can check the developer's website for any of these programs.

The file type is a good hint

You can use the file type as a hint to search for the particular program with which you can open the .PDG file. The type of file can give you a hint about how best to open it. In most instances, .PDG file is referred to as Page Layout Files. Check if there is a program on your computer that can be used to open this type of file. If this type of program is on your computer, you can simply open it and use it to open the .PDG file.

The above hint is only applicable if you are sure of the type of file the .PDG file is. If the reverse is the case and you do not know the type of file you are dealing with, you can use the PDG file to look for the particular file type so that you can easily open the particular file on your computer. You can follow the steps given below to open the .PDG file on different operating systems.

How to open .PDG file on a Windows computer:

  • First of all, right-click on the file icon on your computer.
  • Next, check the drop-down menu and then click on Properties from the drop-down menu.
  • You can then check under the label Type of File to look for the file type.
  • How to open .PDG file on a Mac computer:
  • Right-click first on the file icon.
  • Then check the drop-down menu that comes up and choose More Info.
  • Next, check under the list labeled Kind to choose the type of file.

Get in touch with a Developer

Another way to open the .PDG file is to ask a developer if none of the methods above can get the file opened. If you know a particular software program that can be used to open the file, just get in touch with the developer of that program. The list below will help you to find the right developer for the most popular of all the programs associated in any way to the .PDG file.

  • MetaCAM Part File: The developer is Metamation Inc. the developer created the program for the Sheet Metal Fabrication industry. Its classification is in the CAD/CAM.
  • PrintShop Deluxe File: The developer is unknown.
  • Chaoxing Reader Chaoxing Digital Library e-Book: The developer is Chaoxing Digital Library. Some also call it a Chaoxing Reader graphics because the creation or use of the file is essential for this particular purpose.
  • Print Designer GOLD Data File: The developer is CAM Development.



.PDG file is classified as a Graphic file. You should find out if there is any corruption or virus of any form on the .PDG file before you open it. If there is any virus in the file, you can simply delete the one you have downloaded and got a new one entirely. Afterwards, scan the new file for virus using from Google.

You can equally link the .PDG file extension together with the right application. If you are using the Android operating system, you can click on the Settings icon on any part of your Smartphone. Next, click on the Apps on the list of menu that comes up. You can then click on the Options icon, which you can find at the top right end of your mobile device's screen and this will help to change the default apps.

One other way to open it is to update the software that you want to use to open the .PDG file. This is about the only way out if you already have the program on your computer but it cannot open the file. In most instances, you can only access .PDG files with the most recent version of the program designed for opening it.




File type: Data File


File Extension MDF

MDF files are the DVD or CD data that is saved as an image using a disc authoring application, for example Alcohol 120%. These are very similar to the .ISO file format but are saved in a slightly different format or structure. In these files the actual data of the discs is stored within the MDF file itself whereas the track and header information is usually stored along with it in corresponding MDS format files.


Open MDF File

Category: Data File.
File format: Proprietary
Open with Windows: Microsoft SQL Server
Open with Linux:
MDF files are also the standard file formats used in the automotive industry in order to store measurement data. It has the raw measurement data which were gathered from the actual measurements as well as the metadata that is necessary to be able to interpret the raw data. MDF files are also the primary database format files that are used by the Microsoft product namely, Microsoft SQL Server. It is a high performance database manage system used by large enterprises for large volumes of data which is installed with the Microsoft SQL server as well as its related add-ons. In Microsoft SQL Server the users may also create custom MDF files.

File type: Keyhole Markup Language File

About the KML file type:

This is a XML-based specification for expressing geographical data, annotations and visualizations for 2D maps and 3D Earth browsers or geobrowsers. It is usually a set of KML files which contain the actual data for geographic locations in terms of a longitude and a latitude value along with other graphic images or overlay information files which are zipped together and distributed as KMZ files with the .kmz extension.
KML was originally created by a company named Keyhole, Inc which was then acquired by Google in 2004 for use with Keyhole Earth Viewer, later renamed by Google to Google Earth. KML files specify various features such as place marks, polygons, images, textual descriptions, 3D models, etc, for Google Earth, Mobile, Maps, or any other geobrowser which uses this standard. Each location is described in terms. KML has been adopted as an official OGC (Open Geospatial Consortium) standard as of April, 2008 recommended to be used with all geobrowsers.


Open KML File

Category: Data File.
File format: Open Standard.
Open with Windows: Google Earth, Blender (only import).
Open with Linux: Google Earth, Blender (only import).

Open XAPK File

.XAPK file is categorized as a compressed file and comes in the zip format. It is a special package used for installing android apps on any mobile device. The file has a similarity to the standard .APK file .

However, it may also contain several other assets that are used by the app to be downloaded, egg a .OBB file; this file is responsible for storing several programs, like media files, graphics, and several other apps.

The .XAPK file is used to distribute apps on a third-party Android app that you have downloaded from the internet. The file is, however, not supported by Google Play.

Installer package

.XAPK file is not a standard app installer package. As a result, it must be manually installed or the installation must be done using a XAPK installer.

After you have downloaded the .XAPK file, the app can still be installed to your Android device with the aid of a XAPK installer.

If you prefer you install any additional file manually, you can get the XAPK file unzipped first and then move the unzipped files to the right location on your mobile device.

It is, however, difficult to deliver the apps through Google Play since the size of the concerned APK file must not be more than 50MB.

This is forcing apps developers to go for other files for storing additional media assets and graphics, like the OBB file mentioned earlier.

Due to the limitation mentioned above, some of the developers publicize their apps on several other sites aside from Google Play. The .XAPK format can be used for packaging the OBB and APK files together to bring about a seamless installation and delivery process when an android app is being downloaded from a site that is not Google Play.

Before you download the file in the XAPK format from any external source aside from Google Play, you should first verify if that website is trustworthy or not since it is possible to distribute malware and even spyware through .XAPK files.


How to open .XAPK files

You can open XAPK file on your android device by using the APKPure app. If you are using Windows Operating System, on the other hand, you can use Pure APK Install to open the .XAPK file on your Windows device.

If you do not have access to any of the programs mentioned above for opening the .XAPK, you can install the file manually by changing the file extension.

In this case, you need to:

  1. First open the .XAPK file.
  2. Then launch the File Manager.
  3. Locate the .XAPK file and change the name of the extension to .ZIP.
  4. You can then navigate to Google Play to download the RAR app.
  5. Next, copy the .obb file into any location you prefer and install the APK.
  6. after which the app will collect the resources automatically from the OBB data file and it will open as intended.

It is equally possible to open the file using your PC. You will need to first download Pure APK Install on your PC before you can do this.

One other helpful app for opening the .XAPK file is the Uptodown App.

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