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Convert UEFI to JAR
Online & free tool to convert UEFI files to JAR

1) Input file

Choose source file(s) to convert:

0 of 5 files added (up to 1000 MB combined)

2) Output format

Select a target format to convert to:

3) Convert

By clicking you agree to our terms

Fine-tune conversion output with format-specific controls.

No advanced controls available for this format.

1) File URL

Choose file URL to convert:

2) Output format

Select a target format to convert to:

3) Convert

By clicking you agree to our terms

Fine-tune conversion output with format-specific controls.

No advanced controls available for this format.

1) Cloud Service

Choose a cloud service provider:

2) Output format

Select a target format to convert to:

3) Convert

By clicking you agree to our terms

Fine-tune conversion output with format-specific controls.

No advanced controls available for this format.
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UEFI

Unified Extensible Firmware Interface

EFI files, most commonly referred to as, Extensible Firmware Interface files, are a type of file extension most commonly used for creating an environment in order to boot up the OS. EFI file extensions are usually hidden in the OS in a special EFI system partition and are considered to be UEFI boot loaders. EFI files exist in UEFI file systems and contain data which dictates, how the boot process should occur, or how the booting phases should be executed/initiated. The EFI format was originally developed in the 1990s when the first generation of the Intel HP Itanium systems were being built. It was designed as part of the "Intel Boot Initiative" to tackle server platforms which were large in size; later on, it came to be known as the "Extensible Firmware Interface (EFI)"
JAR

Java Archive File

A .jar extension file is a Java Archive format file that is used to store a large number of files into one single file. The basic advantages of .jar extension files are data compression, archiving, decompression, unpacking of the archived file and electronic signing which is one of the advanced features of this format. The Java Development Kit (JDK) contains the Java Archive Tool that is used to perform the basic tasks on .jar extension files. The JAR format is similar to a ZIP file format and it was specifically developed to help download Java applets and its components that include class files, images and sounds in one single HTTP transaction.

Trusted conversion quality

FreeFileConvert uses tuned encoding for UEFI to JAR conversions, preserving clarity while trimming file size. Finished audio streams instantly across phones, tablets, desktops, and modern browsers without extra tweaks.

Seamless workflow

Upload UEFI files from desktop, tablet, or cloud storage, queue multiple jobs, and let the converter finish autonomously. Return whenever convenient to download synchronized JAR results on any device you rely on.

Batch support for teams

Process up to 5 files sized 1000 MB per batch without splitting queues manually. Mixed-format uploads convert together, producing consistent JAR audio with dependable progress tracking.

About UEFI

How to open UEFI files

7-Zip

Technical details

EFI files contain data tables which contain platform information that aid in the booting and execution of the OS environments, and provide a distinct advantage over traditional BIOS systems. Disk sizes containing up to 2 terabytes of information can be booted…

EFI files contain data tables which contain platform information that aid in the booting and execution of the OS environments, and provide a distinct advantage over traditional BIOS systems. Disk sizes containing up to 2 terabytes of information can be booted and EFI files even work with globally unique identifier tables. Network capability and running PreOS environments are some of the technological perks EFI files offer. Usually, EFI Files provide an interface between the OS and the platform firmware. Users can create and execute an environment for booting up the system's OS which can help run various pre-boot applications. EFI file extensions are used in Microsoft Windows 7 files. EFI files help the hardware and software communicate better with each other and form a part of the UEFI system. A UEFI system allows users to easily launch multiple operating systems without the need of a bootloader such as LILO or GRUB.

About JAR

How to open JAR files

Corel WinZip 21
7-Zip
Bitzipper
WinRAR

Technical details

A .jar file contains the Java source code, a manifest file, XML based configuration data, JSON-based data files, images and sound clips as well as security certificates. These files use a standard compression algorithm and hence can be easily opened by extract…

A .jar file contains the Java source code, a manifest file, XML based configuration data, JSON-based data files, images and sound clips as well as security certificates. These files use a standard compression algorithm and hence can be easily opened by extracting the contents of the file with a standard decompression tool like the tool used to extract .zip extension files.

How to convert UEFI to JAR

STEP 1

Upload your archive file in the UEFI format from your device, Dropbox, or Google Drive.

STEP 2

Select JAR as the output format and click Convert. Adjust optional settings if needed.

STEP 3

Download the converted archive file. Each file stays available for up to 5 downloads.

More UEFI and JAR options

Convert other files to JAR

Explore popular source formats that convert beautifully into JAR.

Convert UEFI to other formats

Need a different output? These conversions transform UEFI into other widely used formats.

Your data, our priority

  • 256-bit SSL encrypted uploads and downloads
  • Automatic file deletion shortly after conversion completes
  • Reliable global infrastructure for consistent performance