XXE to JAR Converter
Processing entirely on your device — large files may take a moment.
Repack a JAR as ZIP to inspect classes and resources with any unzip tool. If your files are still in XXE format, this page is the shortcut: XXE is xxencode's answer to uuencode — the same 4-for-3 packing but with an alphabet that survives IBM mainframe EBCDIC gateways.
This converter runs entirely in your browser using WebAssembly — your files never leave your device, nothing is uploaded, and there are no watermarks, sign-ups or queues. Drop in several files at once to convert them as a batch.
How to convert XXE to JAR
- 1
Select your files
Drag & drop your XXE files onto the area above, or click to browse. You can add multiple files at once for batch conversion.
- 2
Convert instantly
Click "Convert to JAR". The conversion runs entirely inside your browser using WebAssembly — no upload, no queue, no waiting.
- 3
Download results
Download each converted JAR file individually, or grab everything at once as a ZIP archive.
About the XXE format
XXE is xxencode's output: the same 4-for-3 packing as uuencode, but with an alphabet (+- and alphanumerics) chosen to survive EBCDIC systems — the IBM mainframe text encoding that mangled uuencoded files crossing gateways.
The decoder is identical arithmetic with a different lookup table; payloads decode back to the original binary (often a tar) ready for repackaging.
+ Strengths
- ✓EBCDIC-safe alphabet
- ✓Same simple packing as UUE
- ✓Decodes with a table swap
! Limitations
- −Extremely rare today
- −EBCDIC gateways themselves are gone
- −Dialects differ between implementations
About the JAR format
A JAR is a ZIP with Java manners: class files, a MANIFEST.MF, resources and optional signatures. Any tool that opens ZIPs can open it — but converting to a plain ZIP strips the “is this executable?” ambiguity and makes browsing the contents painless.
Useful for auditing dependencies, extracting embedded resources, or checking what a library actually ships before adding it to a build.
+ Strengths
- ✓Standard Java delivery format
- ✓ZIP-based, tools abound
- ✓May carry signatures and manifests
! Limitations
- −Not a installer — just a package
- −Contents are class files, not source
Why convert XXE to JAR?
There is a concrete reason this conversion exists: Extremely rare today JAR sidesteps that — Standard Java delivery format If that is your situation, the tool above settles it in seconds, entirely on your device.
Frequently asked questions
Is this XXE to JAR converter really free?
Yes — completely free, with no sign-up, no watermark and no daily conversion limits. The site is supported by advertising.
Are my files uploaded to a server?
No. The conversion runs entirely inside your browser using WebAssembly, so your files never leave your device — that is what makes it instant and private.
Does it work on Windows, Mac, iPhone and Android?
Yes. Anything with a modern browser works: Windows, macOS, Linux, Android and iOS. No software installation is required.
Is there a file size limit for XXE to JAR?
The only limit is your device's memory, since nothing is uploaded. Files up to a few hundred megabytes work fine on a modern desktop browser; very large files simply take a little longer.
Are the files inside my XXE archive modified?
No. Contents are unpacked in memory and repacked into JAR byte-for-byte — the conversion changes the container, never the files inside it.
Is there a size limit for archive conversion?
There is no upload cap because nothing is uploaded — the practical limit is your device memory. A few hundred megabytes of unpacked content works comfortably on a modern computer.