OpenNestEPUB to GZ Converter
Convert EPUB Book to GZIP Archive directly in your browser. Your files never leave your device — no uploads, no account, no tracking.
Choose files
or drag & drop here
100% local — your file never leaves this device.
How to convert EPUB to GZ
Choose your EPUB file
Select a EPUB Book from your device — click or drag & drop.
Pick GZ as the output
We auto-detect your file and show GZ as a recommended target.
Convert & download
Everything runs locally in your browser, then you download the result instantly.
Why use OpenNest to convert EPUB to GZ?
100% local
Your EPUB file is converted entirely in your browser — nothing is uploaded.
Free & no account
No signup, no limits. Convert as many files as you need, on any device.
Private by design
No servers, no tracking, no logs. Close the tab and every trace is gone.
Supported input & output
| Input — EPUB Book | .epub · application/epub+zip |
|---|---|
| Output — GZIP Archive | .gz · application/gzip |
FAQ — EPUB to GZ
Is EPUB to GZ conversion free?
Yes — completely free, no account, no signup, and no file limits.
Do I need to upload my EPUB file?
No. The conversion runs entirely in your browser; your file never leaves your device.
How do I convert EPUB to GZ?
Select your EPUB file, choose GZ as the target, and click Convert. The result downloads instantly.
Is the output quality preserved?
Conversion is done locally with high-quality output, preserved to the extent the target format allows.