Format file APK is, in fact, a standard archive with a .zip extension, which contains all the necessary components for installing the application on a smartphone. For the average user, simply clicking on it will start the installation, but in situations where you need to extract specific resources, change an icon, or access code, an unzipping procedure is required. This process is not complicated, but it requires an understanding of the structure of Android packaging and the availability of suitable software.
Many people encounter a problem when the standard file manager does not see the contents of the APK as a folder, or the device refuses to open the file correctly. This is due to the fact that the system treats the installation package as a single whole for security purposes. However, with the help of specialized tools, you can turn this package into a regular directory of files, available for editing and analysis. In this article we will look at how to do this directly on the device and using a computer.
Preparing the device and selecting tools
Before you start manipulating files, you need to make sure that you have access to the file system in full. Standard Android tools often restrict access to system folders, so for deep work you may need to get root access. However, for basic unpacking of an APK into a user storage, superuser rights are usually not required.
The key element of success is choosing the right one file manager. Not all explorers can work with archives at the APK content extraction level. Some applications only simulate opening, starting the installation, which is not suitable for us. We need tools that can recognize the ZIP structure inside an APK and allow you to extract files manually.
⚠️ Attention: When unzipping system applications or files from unknown sources, there is a risk of damaging the app structure. Never try to replace the original files inside the APK back without creating a backup copy, otherwise the application will stop running.
It is also worth freeing up space on the internal drive in advance. An unpacked APK takes up several times more space than the archive itself, since resources (pictures, sounds, libraries) move from a compressed state to an expanded one. It is recommended to have at least 100-200 MB of free disk space before starting the operation.
Before starting, copy the APK file to a separate folder on an external SD card or cloud storage. This will keep the original intact if something goes wrong during the editing process.
Method 1: Using advanced file managers
The fastest way to unzip an APK is to use multifunctional file managers available on Google Play. The leaders in this category are MT Manager, ZArchiver and RS File Manager. These applications can open APKs like regular folders, allowing you to view the internal structure without explicit unpacking, or extract files one by one.
Let's consider the algorithm using the example of a popular archiver ZArchiver. After installing the application, find the desired APK file in the list. Click on it once to bring up the context menu. From the list of options, select View or Extract. The first option will allow you to go inside the archive as a folder, the second will unpack all the contents into the current directory.
If you select extraction, the app will prompt you to specify the path to save the files. By default, a folder is created with a name corresponding to the application name. Inside you will find a standard set of files: AndroidManifest.xml, a folder res with resources and a folder lib with libraries for different processor architectures.
- 📂 MT Manager - an ideal choice for modding, allows you to edit files inside an APK on the fly without completely unpacking.
- 📦 ZArchiver —a simple and reliable tool for bulk file extraction in normal mode.
- 🔍 RS File Manager —a powerful harvester with support for root access and a built-in code editor.
- ⚙️ Total Commander —a classic option that requires the installation of an additional plugin for working with ZIP/APK.
It is important to understand that when viewing through a file manager, files resources.arsc and AndroidManifest.xml can be displayed in binary form. To read them in a clear text format, you will need additional decoders, which are often built into the same MT Manager or Apktool.
Method 2: Manually changing the file extension
There is a method that does not require installing third-party software that works on most versions of Android. Since the APK format is based on the ZIP standard, you can simply rename the file by changing its extension. This trick allows you to open the archive with any built-in archive viewer, if the system has one.
To implement this method, go to the settings of your file manager and enable the display of file extensions. Find the APK you want, hold your finger on it and select the Rename option. Change the ending of the file name from .apk to .zip. The system will warn you about possible file corruption - confirm the action.
After changing the extension, the file icon should change to an archive icon. Now you can click on it and select "Extract" or "Unzip". Standard Android tools or pre-installed archivers (for example, from Xiaomi or Samsung) will correctly process this request and create a folder with the contents.
⚠️ Attention: After renaming the file, the system will no longer perceive it as an installation package. To install the application back, you will have to rename it again, returning the .apk extension. Do not delete the original before checking its functionality.
This method has one significant drawback: it does not decode binary manifest and resource files. You will receive raw data that is difficult for a human to read. This method is ideal for simply copying pictures or sounds, but not for code analysis.
Why don’t some archivers open the renamed APK?
Some developers use non-standard compression or encryption methods inside the APK container that standard ZIP algorithms do not recognize. In such cases, only specialized software like 7-Zip on a PC will help.
Method 3: Unpacking via a computer (PC)
If manipulations on a small smartphone screen seem inconvenient, or a deep analysis of the application structure is required, it is better to use a personal computer. A PC has more processing power and convenient tools for working with archives, such as 7-Zip or WinRAR.
First, connect your smartphone to the computer via a USB cable and copy the APK file to your hard drive. Make sure you have an archiver installed on your PC that supports the ZIP format (7-Zip is free and the best choice). Right-click on the APK file and select the “Extract here” or “Extract here” option.
The process will take a few seconds. As a result, you will receive a full-fledged folder with all subdirectories. On a computer it is much more convenient to view images in a folder res/drawable or analyze text configs. In addition, you can use specialized deconpilation software, which will be discussed below.
| Tool | Platform | Complexity | Features |
|---|---|---|---|
| 7-Zip / WinRAR | Windows / Linux | Low | Easy file extraction |
| MT Manager | Android | Medium | Editing and decoding |
| Apktool | PC (Java) | High | Full decompilation of the project |
| JADX | PC / Android | Medium | View Java code |
Using a PC also avoids the risk of accidentally deleting system files on your phone. All operations take place in an isolated computer environment, which makes the process safer for the main device.
Deep decompilation using Apktool
When it comes to not just extracting pictures, but about full-fledged reverse engineering of an application, ordinary unpacking will not help. Files classes.dex (bytecode) and resources.arsc (resource table) remain in a format incomprehensible to humans. This is where the utility comes in. Apktool.
This tool allows you to decode resources back into readable XML and convert the bytecode into a understandable smali structure. To work with Apktool on a PC, you will need Java Development Kit (JDK)installed. The process is launched via the command line using specific flags.
apktool d name_app.apk -o output_folderThe command above instructs the app to decode (flag d) the file name_app.apk and save the result to a folder output_folder. Once completed, you will receive a complete copy of the project, ready for study or modification. This is the only way to legally and correctly change the logic of the application or translate its interface.
☑️ Checklist for working with Apktool
There are also mobile versions of similar tools, for example, a built-in decoder in MT Manager. It works similarly, but directly on your smartphone. When you open an APK in editor mode, the app will automatically offer to decode the manifest and resources if you try to change them.
Content analysis and folder structure
After successful unzipping, you will be faced with a set of folders and files, the names of which may not mean anything to a beginner. Understanding APK structure is critical for navigation. The bulk of user data is usually hidden in the directory res.
The folder lib contains native libraries compiled for specific processor architectures (armeabi-v7a, arm64-v8a, x86). It is not recommended to touch these files without deep knowledge of assembler - this will lead to the application crashing when launched on a device with an incompatible processor.
⚠️ Attention: Application interfaces and utility algorithms can be updated by developers. If you do not find familiar buttons or options, check the official documentation for the file manager or archiver you are using.
The file AndroidManifest.xml is the passport of the application. It contains all the permissions that the app requests (access to the camera, the Internet, contacts), as well as a description of activities and services. With normal parsing, it will be binary, but tools like JADX allow you to see it in a readable form.
- 📁 assets — additional data loaded by the application (databases, game levels, fonts) is stored here.
- 🎨 res — interface resources: pictures (drawable), screen layouts (layout), lines of text (values).
- ⚙️ smali —the result of disassembling the code, presented in the intermediate language of the Dalvik virtual machine.
- 📜 META-INF —a folder with digital signature certificates that guarantee the integrity of the package.
The res folder contains all the visual elements of the application. If your goal is to change the icon or background, you need to look here, in the drawable or mipmap subfolders.
Common problems and their solutions
During the work process, users often encounter errors that block further actions. The most common problem is the "File is corrupted" or "Unsupported format" message. This often happens when trying to open an APK that was signed with a new signature scheme (V2/V3) or older versions of archivers.
Another difficulty arises when working with Split APK (.apks or .xapk format). Such packages consist of several parts: a base module and configurations for different screens or languages. Simply unpacking one file from such a set will not produce a complete application. To work with them, you need special installers or utilities like SAI (Split APKs Installer)that can put them together before analysis.
If, when unpacking via a PC, the files turn out to be empty or have a size of 0 bytes, check whether the antivirus has blocked access to the contents of the archive. Sometimes security software considers APK manipulation suspicious and isolates some of the data. Temporarily disable protection or add the folder with files to exceptions.
Do not forget that the modified application cannot be installed over the original from Google Play without deleting the latter. The signature systems will not match and Android will throw a conflict error. To install a modified version, you must first completely remove the original application from the device.
Is it possible to unzip an APK without installing apps?
Yes, using the method of changing the extension to .zip and the archiver built into Android (if there is one), or through online APK decoding services, where you need to upload the file. However, online methods are less secure for sensitive data.
Is it safe to edit files inside an APK?
For personal experiments, yes. But if you plan to distribute a modified application, it may violate copyright. In addition, incorrect editing of the manifest will make the application inoperable.
Why do you need to extract files from the APK?
The main reasons: creating mods (cheats, patches), app localization (translation into another language), extracting resources (music, wallpaper) for personal use or analyzing malicious code.
What should you do if the files do not open after unpacking?
Most likely, you are trying to open a binary file (for example, resources.arsc) in a text editor. To view such files, you need special decompilers like JADX or APK Editor Pro.
Will the application be deleted if I unzip its APK?
No, the unzipping process creates a copy of the files in a new location. The original installed application and the APK installation file itself remain untouched unless you delete them manually.