Convert MOBI to HTMLZ Online
MOBI and HTMLZ serve different purposes. Convert MOBI to HTMLZ here when you need HTMLZ workflows.
How to convert MOBI to HTMLZ
- Upload your MOBI file. Drag it onto the box above or click to browse. Files up to 200 MB are accepted.
- Choose HTMLZ as the output. The target format is pre-selected on this page — just press “Convert now”.
- Download the result. Conversion runs on our own server and the download starts as soon as it is ready. Your files are deleted automatically.
Why convert MOBI to HTMLZ?
People convert MOBI to HTMLZ mainly for compatibility. Superseded by KFX/AZW3; convert for modern devices. HTMLZ, by contrast, is built for HTMLZ workflows, and support for HTMLZ depends on the application you use.
MOBI vs HTMLZ: key differences
| MOBI | HTMLZ | |
|---|---|---|
| File type | reflowable | file format |
| Typical use | legacy Kindle libraries | HTMLZ workflows |
| Compatibility | Superseded by KFX/AZW3; convert for modern devices. | Support for HTMLZ depends on the application you use. |
Tips for a clean MOBI to HTMLZ conversion
- Superseded by KFX/AZW3; convert for modern devices.
- Use the highest-quality source MOBI you have — converting a compressed file again cannot restore lost detail.
- If you only need a smaller file, try a lower resolution or bitrate instead of a different format.
- Keep the original MOBI until you have checked the converted HTMLZ opens the way you expect.
Frequently asked questions
How do I convert MOBI to HTMLZ?
Upload your MOBI file to the converter on this page, make sure HTMLZ is selected as the output format and click “Convert now”. When the conversion finishes the download starts automatically.
Is this MOBI to HTMLZ converter free?
Yes — it is completely free and needs no account. Files up to 200 MB are accepted, and heavy use is rate-limited so the service stays available for everyone.
Will converting MOBI to HTMLZ reduce quality?
HTMLZ uses its own compression, so the converted file is re-encoded. Quality loss is minimal at sensible settings, but keep the original MOBI if you may need to convert again later.
What is a MOBI file?
MOBI is amazon's older Kindle ebook format. Its technical name is Mobipocket and it is typically used for legacy Kindle libraries.
What is a HTMLZ file?
HTMLZ is a HTMLZ file, handled by the converthubor conversion engine. Its technical name is HTMLZ and it is typically used for HTMLZ workflows.
Can I convert MOBI to HTMLZ on my phone?
Yes. The converter runs in the browser on Android, iOS, Windows, macOS and Linux — no app installation is required.
Are my files kept on the server?
No. Uploaded files and converted results are deleted automatically a short time after the conversion finishes.