XXE is xxencode's answer to uuencode — the same 4-for-3 packing but with an alphabet that survives IBM mainframe EBCDIC gateways.
Typical use: Decode XXE payloads just like UUE — same packing, different alphabet.
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
- Structure
- begin/end + XXE alphabet blocks
- Types / schema
- ASCII armor over binary
- Compatibility
- xxdecode, 7-Zip
- Best for
- Mainframe-era binary transport (legacy)
Convert XXE to…
12 direct directions, sorted A–Z; 🔥 marks popular targets.
Frequently asked questions
What is a XXE file?
XXE is xxencode's answer to uuencode — the same 4-for-3 packing but with an alphabet that survives IBM mainframe EBCDIC gateways.
How do I convert XXE files online?
Pick a target format from the "Convert XXE to…" list below, drop your file and hit convert. Everything runs in your browser — no install, no upload, no watermark, no limits.
Is it safe to convert XXE files here?
Yes. Every conversion is performed by your own device inside the browser — files never leave for a server, and the page keeps working even offline.
Which formats can XXE convert to?
This page lists all 12 directions across documents, images, audio, video, spreadsheets and archives — each one is its own free converter page.