HWPX to AZW3 Converter
Convert HWPX to AZW3 online for free. Fast, secure, and high-quality conversion with no sign-up or software required.
Maximum file size is 1GB
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Three steps to your converted file
Everything happens in your browser tab - upload, pick a format, download. The heavy lifting runs on our servers.
Upload your file
Drag and drop, click to browse, or paste a URL. Batches take up to 20 files at once - 230+ input formats across video, audio, image, document, and archive types.
Choose an output format
Pick from over a hundred output formats. Filter by category or search by name - every option is open to everyone, no account needed.
Convert & download
Hit Convert and grab your download link moments later. Originals are erased when the job completes; results are cleared within about an hour.
What is an HWPX file?
HWPX is the modern, open standard document format for Hancom Office Hangul, introduced to adhere to the OWPML (Open Word Processor Markup Language) standard, also known as KS X 6101. Unlike the binary HWP format, HWPX utilizes a ZIP-compressed container structure holding XML files to define content, styles, and metadata, conceptually similar to Microsoft's DOCX. This shift enables better data interoperability, programmatic parsing, and machine readability for big data analytics and public record archiving.
How to open an HWPX file
HWPX files are primarily opened using Hancom Office 2010 SE+ or newer iterations. Users can also utilize the Hancom Office Viewer or the cloud-based Hancom Docs service. Because HWPX is a ZIP-based XML format, the raw contents can be inspected by renaming the extension to .zip and extracting it, though proper rendering requires the Hancom engine or the Naver Whale browser's document viewer.
HWPX Technical Info
- Full Name
- Hangul Word Processor XML
- Developed By
- Hancom Inc.
- Initial Release
- 2010
- MIME Type
- application/hwp+zip
What is an AZW3 file?
AZW3, also known as Kindle Format 8 (KF8), is the successor to the original AZW standard, engineered to support a subset of HTML5 and CSS3 specifications. Unlike its predecessor, AZW3 enables advanced formatting features including Scalable Vector Graphics (SVG), embedded fonts, and complex layouts within a proprietary binary wrapper. The format structure is a compiled database that allows for both reflowable content and fixed-layout elements, catering to the rendering capabilities of fourth-generation and later Kindle E Ink devices.
How to open an AZW3 file
Primary support is provided by Amazon Kindle devices (Generation 4+) and the official Kindle reading apps. For desktop viewing without Amazon software, Calibre and SumatraPDF (Windows) offer rendering support for DRM-free AZW3 files. Users on Linux can utilize eBook viewers like FBReader or coolreader provided the files are unencrypted.
AZW3 Technical Info
- Full Name
- Kindle Format 8
- Developed By
- Amazon
- Initial Release
- 2011
- MIME Type
- application/vnd.amazon.ebook
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Purpose-built for speed, privacy, and breadth of format support.
Convert HWPX to AZW3 in seconds
Every HWPX to AZW3 conversion runs on our servers, so your device stays fast and the output quality stays intact.
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No queue, no waiting. Files are processed on high-performance servers and returned in seconds, even for large files.
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Encrypted in transit and never shared with anyone. Uploads are erased the moment your job completes, and results shortly after.
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Developer API
Convert HWPX to AZW3 via API
Automate HWPX to AZW3 conversions in three steps: create a job, upload your file, then poll for the result.
# 1. Create job
curl -X POST https://api.runconvert.com/v3/jobs \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"tag": "hwpx-to-azw3",
"tasks": {
"upload-file": {
"operation": "import/upload"
},
"convert": {
"operation": "convert",
"input": "upload-file",
"output_format": "azw3"
},
"export-result": {
"operation": "export/url",
"input": "convert"
}
}
}'
# 2. Upload your file (use upload_url from the response)
curl -X PUT "$UPLOAD_URL" --upload-file input.hwpx
# 3. Poll for result
curl https://api.runconvert.com/v3/jobs/$JOB_ID?include=tasks \
-H "Authorization: Bearer YOUR_API_KEY"Replace YOUR_API_KEY with your RunConvert API key. Get your free API key at runconvert.com/api.