How To Open APK, SRT And EPUB Files (Complete Guide)

An example of a file extension is APK, SRT, or EPUB. But are you actually aware of what they are? Or do you understand how to operate each one? Observe this article carefully.


A file extension, also known as a file name extension or a file suffix, is added to the end of the name of a computer file, for example, .apk, .srt, or .epub.

The file extension reveals information about the file’s contents or intended use. Normally, a full stop (period) separates a filename extension from the rest of the filename, although in some systems, spaces are used instead.

On some versions of IBM AIX and earlier versions of Linux, some extension types include dashes and/or underscores.


While some file systems treat filename extensions as a feature of the file system itself and may place restrictions on the type and length of the extension, other file systems simply treat the extension as a component of the filename.

What an APK, SRT, and EPUB file is and how to open or install them are all covered in this article (exactly how depends on your operating system.)

ALSO READ: 20 Best APK Download Sites For Android Apps (Safe & Secure)

What Is an APK File?


An Android Package file, or APK file, is a type of file used to distribute apps on Google’s Android operating system.

APK files are commonly downloaded directly to Android devices using Google Play, however they can also be available on other websites, and they are saved in the ZIP format.


An AndroidManifest.xml, classes.dex, and resources.arsc file, together with a META-INF and res folder, are some of the contents of a typical APK file.

How to Open an APK File

APK files can be opened on a variety of operating systems, but Android smartphones are where they are most frequently utilised.

On Android

Downloading an Android app and then opening it when prompted are the only steps needed to use one on an Android smartphone. However, due to a security block put in place, APK files installed outside of the Google Play store might not immediately install.

Depending on your Android version, navigate to one of these menus to get around this download limitation and install APK files from untrusted sources:

  • Settings > Apps > Special app access > Install unknown apps
  • Settings > Apps & notifications > Advanced > Special app access > Install unknown apps
  • Settings > Apps and notifications
  • Settings > Security

Helpful Content: Best Sites To Download Cracked Apps For Android In 2022- APK Cracked Sites

On Windows

On a Windows computer, an Android emulator like BlueStacks can be used to open an APK file.

Additionally, Windows 11 users can download Android programmes from the Microsoft Store, doing away entirely with the requirement to work with APK files.

You can’t simply play an Android game or test out a new app on your computer using Android Studio, which is the tool used to create Android apps. Both Windows and macOS support it.

On iOS

The APK file is constructed entirely differently from apps used on iPhones and iPads, on this note, you cannot open or install APK files on those devices. Additionally, the two platforms are incompatible with one another.

The IPA file extension is used to store iOS programmes in their native format.

What Is an EPUB File?

The most popular format for digital books is an epub file. Most other suppliers of digital books sell epub files, despite the fact that some, like Amazon, don’t. You’ll want to learn how to open epub files if you enjoy reading. No matter what device you use, this tutorial has you covered.


How to Open an EPUB File

Several operating systems can open epub files, however Android smartphones are the devices that use them the most.

On Android

You must install an epub reader on Android in order to access epub files, such as Aldiko or Universal Book Reader. Here’s what you have to do: We choose Universal Book Reader.

  • Copy all epub files to your Android device.
  • Open Universal Book Reader. The first time you start it, you will see some tips about the app’s features. Keep hitting next till you see a bookshelf.
  • The app will now ask you if you want to import all ebooks. Tap the Yes button and all the ebooks on your device will show up in the app automatically. Tap the one you want to open and you’re good to go.

On Windows & OS X

Calibre is the best programme for opening epub files on Windows and Mac OS X. We adore Calibre because it is the most potent tool of its sort currently available and supports practically all ebook file formats. It provides great tools for managing libraries, and you can “get” book metadata from the Internet with it as well. Additionally, it makes it simpler to send books to your devices and share them with others. You may read novels, of course. Follow these instructions to read books after downloading and installing it on your device.

  • Open Calibre and click the red Add books button on the top-left.
  • Select your epub file. It will appear in the big white box in Calibre. Double-click the file name in Calibre to open it and start reading.

On iOS

Your iPhone or iPad’s iBooks app can open epub files without any issues, but iOS users may have trouble downloading the files onto their device in the first place. The iBooks app and online storage services like Dropbox are the two best ways to open an epub file on iOS. Before logging in, you must download the Dropbox iOS app and submit the file. then take these actions:

  • Find the epub file and tap on it. You will see an error message saying Dropbox can’t open the file.
  • Now tap the Share button (the box with an arrow pointing upwards) and tap Open in.
  • You’ll see a menu pop up, with an option to Open in iBooks. Tap that to open the epub file.

How to Convert an APK File

Although it’s typically necessary to employ a file conversion tool or service to change one file type into another, APK files don’t benefit much from this. This is because, unlike other file formats like MP4s or PDFs that function on several platforms, an APK file is an application that is designed to run only on specific devices.

Instead, you should follow the steps outlined above if you wish to convert your APK file to ZIP. Either rename the.APK file to.ZIP or open the APK file in a file extraction programme and then repackage it as a ZIP.

What Is an SRT File?

A SubRip Subtitle file has the.SRT file extension. These kinds of files store information about video subtitles, such as the text’s beginning and ending timecodes and the number of subtitles in order.


It’s critical to remember that the file is really a text file that contains video data. This indicates that there are no audio or video files present.

How to Open SRT Files

Since SRT files are just ordinary text files, any text editor can be used to open them.

However, using an SRT file with a video player to have the subtitles play along with the video is the most typical reason for someone to wish to do so.

If so, software like VLC, MPC-HC, KMPlayer, MPlayer, BS.Player, or Windows Media Player can be used to access it (with the VobSub plugin). You can even utilise the subtitles in one of your YouTube videos because the SRT format is supported for those as well.

How To Convert An SRT File

Some of the aforementioned editors and video players can change the file’s subtitle format. Jubler, for instance, allows users to save subtitles in SSA, SUB, TXT, STL, XML, or DXFP files, among other subtitle formats.

Additionally, SRT files can be converted online via services like and Subtitle Converter. One can be converted to SCC, MCC, TTML, QT.TXT, VTT, CAP, and other formats, for instance, using It can convert it in bulk and even in a number of formats at once.

ALSO READ: 20 Platforms That Let You Convert Your Social Media Content To NFT

Frequently Asked Questions About How To Open APK, SRT And EPUB Files

Can APK files harm my device?

Unfortunately, APK files occasionally cause damage to devices. It is advised to scan APK files for viruses online before installing them because they may contain malware.

To reduce the risk of your device being infected by a malicious programme, only download from websites you know and trust. In a nutshell, YES!

Are APK files legal?

Downloading APK files and using them to install programmes not found in the Google Play Store is entirely legal. APK is merely a file type, much as EXE or ZIP. The APK file format was created by Google, however anybody can use and produce APK files.

How do I find APK files on my Android device?

Use an Android file manager to search for the file and find APK files on your device. There are several alternatives to the file managers that are included on some mobile devices in the Google Play Store.

How do you download an SRT file from YouTube?

If a YouTube video has the closed captions icon (CC) displayed underneath it, you can utilise a website like SaveSubs to extract and download the subtitles. Enter the video’s URL, choose Download, and then choose SRT on SaveSubs.

How do you create an SRT file for Facebook?

Initially, use a text editor or an SRT editor like Jubler to produce the SRT file. To upload your SRT file, choose Edit video on the Facebook video and then Choose File under Upload SRT files.


That’s all on how to open APK, SRT And EPUB files.


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