EML to XZ Converter
Processing entirely on your device — large files may take a moment.
Email Message (RFC 822) and XZ Compressed File exist for different jobs: EML is the RFC-822 email format every mail client exports: plain-text headers followed by the (often MIME-multipart) body. Universal, but awkward to read outside a mail app. Unpack XZ into ZIP/TAR for tools that cannot read LZMA2.
Because the whole conversion happens on your device, it is instant, unlimited and genuinely private — no accounts, no watermarks, no files on anyone's server. Multiple files are converted in one go.
How EML compares to XZ
| EML | XZ | |
|---|---|---|
| Layout | As sent (RFC 822/MIME) | One compressed member |
| Best for | Cross-client email archives | Packages and releases |
How to convert EML to XZ
- 1
Select your files
Select your EML file.
- 2
Convert instantly
The file bytes are gzip-compressed in place — the same archive your server or build tool produces, made locally.
- 3
Download results
Download the .gz file — ready to upload, serve or attach.
About the EML format
EML is the open email format (RFC 822/MIME): readable headers followed by a body that may be plain text, HTML or multipart. Every mail client exports it, every standard knows it — yet outside a mail app, a raw EML is a wall of headers and MIME boundaries.
Converting EML to clean HTML or TXT produces correspondence you can file, search and feed into other systems — the format stays open, but the reading experience finally matches what the sender intended.
+Strengths
- ✓The open standard every client exports
- ✓Headers stay intact and searchable
- ✓Multipart bodies resolved to readable content
!Limitations
- −Attachments are listed but not extracted here
- −Exotic encodings occasionally need manual care
About the XZ format
XZ wraps the LZMA2 algorithm: the best ratio of the common Unix compressors, which is why distribution packages and source releases pick it when bandwidth matters more than CPU.
Windows Explorer and many cross-platform tools cannot open it — unpacking to ZIP or TAR makes the payload portable.
+Strengths
- ✓Highest common ratio
- ✓Standard for Linux packages
- ✓Integrity checks built in
!Limitations
- −Memory-hungry at high settings
- −Sparse support outside Linux
Why convert EML to XZ?
Think of it as moving your file to the container that fits the job. Attachments are listed but not extracted here XZ works differently: Highest common ratio If any of that sounds like your task, run the conversion — it takes seconds and nothing leaves your device.
Frequently asked questions
Is this EML to XZ 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 EML to XZ?
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.
What about folders and directory structure?
The full directory tree is preserved: folders stay folders, and deep paths arrive exactly as they were packed in the EML file.
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.