HTMLZ to DOCX Converter
Convert zipped HTML (HTMLZ) files to DOCX. Turn a single archive holding an HTML document with its images and stylesheet into an editable Word document.
Complete the security check to begin
About Converting HTMLZ to DOCX
HTMLZ is a ZIP containing a single HTML file plus its images and stylesheet. It exists as an interchange and archival format rather than a reading one — a way to keep a document as plain, inspectable HTML in one file. When you need to move away from HTMLZ, the usual reason is simple: not a reading format — readers reject it.
Converting your HTMLZ e-book to DOCX solves that. DOCX is the modern Microsoft Word format — a ZIP package of XML. It is compact, resistant to corruption and editable in Word, Google Docs, Pages and LibreOffice. In practice you gain fully editable and open xml standard. PrivConvert runs the whole HTMLZ-to-DOCX conversion in server memory and deletes your file the instant the DOCX is ready — nothing is stored, logged or reused.
When this conversion helps
- You need fully editable
- You need open XML standard
- You need small and corruption-resistant
- Sharing a HTMLZ e-book with someone whose software expects DOCX
Tips for best results
- After converting, open the DOCX and skim the formatting — complex layouts occasionally need a small touch-up.
- Files up to 250 MB are supported, and you can batch-convert several HTMLZ files at once; each is processed privately and deleted immediately.
How to Convert HTMLZ to DOCX Online
Converting HTMLZ to DOCX with PrivConvert takes three quick steps and no software to install. What you gain with DOCX: fully editable.
Drag and drop your file into the upload area, click to browse your device, or paste a URL to a file hosted online. You can upload files up to 250 MB and batch convert up to 20 files at once.
Once uploaded, the conversion from HTMLZ to DOCX starts automatically. The process runs entirely in an isolated environment - your data never leaves the secure pipeline.
Your converted file is ready instantly. Click the download button to save it to your device. The file is deleted from memory immediately after download.
A more private way to convert HTMLZ files
Plenty of sites convert HTMLZ files. Very few promise never to keep them — PrivConvert does, and backs it up with how the service is built.
Every upload and download is protected with TLS 1.3, so your e-book cannot be intercepted on the way to the server or back to you.
Convert instantly with no sign-up, no email and no profiling cookies. We never build a profile around you or the files you convert.
Runs in any modern browser on Windows, macOS, Linux, Android and iOS — no install, plugin or desktop software needed.
Each job runs in an isolated in-memory sandbox, so most conversions finish in seconds instead of waiting in a queue.
HTMLZ vs DOCX - Format Comparison
| Feature | HTMLZ | DOCX |
|---|---|---|
| File extension | .htmlz | .docx |
| Full name | Zipped HTML archive | Office Open XML Document |
| Introduced | — | 2007 |
| Encoding | Binary | Binary |
| Editable | Yes | Yes |
| Open standard | Yes | Yes |
| Supported by PrivConvert | Yes (as input) | Yes (as output) |
| Privacy-safe conversion | In-memory, zero storage | |
| Max file size | 250 MB per file | |
| Batch support | Up to 20 files simultaneously | |
Built for people who value their privacy
From one-off files to daily batches, thousands of people rely on PrivConvert precisely because it keeps nothing once the job is done.