How to Recover Deleted HWP Files
Hancom Office Document Recovery Guide

If you work with Korean government agencies, universities, or businesses in Korea, chances are you live inside Hancom Office (한컴오피스) and its native file format: HWP. Losing an HWP document — whether through accidental deletion, a crashed drive, or an accidental Shift+Delete — can feel catastrophic, especially when a deadline is looming.

The problem: most data recovery tools on the market cannot properly recover HWP files. They're built for common Western formats like DOCX and PDF, with no knowledge of HWP's internal structure. HDH DataRecovery was designed from the ground up with explicit support for HWP and HWPX file signatures, making it one of the few tools that can reliably restore these documents.

1. What Is the HWP Format?

HWP (Hangul Word Processor) is the native document format of Hancom Office — Korea's most widely used word processor, with over 20 million users. It's the standard document format for Korean government, education, and many corporate environments. Files use the .hwp extension (legacy) or the newer .hwpx extension (XML-based, introduced in Hancom Office 2014).

Unlike Microsoft Word's DOCX format (which is essentially a ZIP archive of XML files), the legacy HWP format uses a proprietary binary structure based on Microsoft's Compound Document File format, with Korean-specific encoding and compression layers on top. This means:

• Generic recovery tools that search for DOCX signatures cannot find HWP files
• Even if a tool recovers the raw bytes, it may not correctly reconstruct the file's internal structure
• The HWPX format (used in newer versions) requires separate signature handling

2. Why Standard Recovery Tools Fail on HWP

File carving — the technique used in Deep Scan mode — works by searching disk sectors for known byte patterns (magic bytes) that mark the beginning of a specific file type. For an HWP file, the signature is the Compound Document header followed by HWP-specific stream markers. Most tools simply don't have this pattern in their database. HDH DataRecovery does.

3. Common Causes of HWP File Loss

• Accidental deletion — hit Delete or Shift+Delete in a moment of distraction
• Recycle Bin emptied — cleaned up the bin without checking contents
• Drive formatting — formatted a USB or hard drive that contained HWP documents
• Drive failure — HDD bad sectors or USB corruption
• Ransomware — malware encrypted or deleted HWP files as part of an attack
• Hancom Office crash — file in use when software or system crashed, autosave failed
• Cloud sync overwrite — a cloud service overwrote the file with an older version

4. Step-by-Step: Recovering HWP Files

1. Stop Using the Affected Drive Do not save any new files to the drive where the HWP documents were stored. Do not reinstall Hancom Office to the same drive. Each write risks overwriting your deleted documents.
2. Download HDH DataRecovery to a Different Drive Download the installer from the link below and install it on a USB drive or secondary partition — not on the drive containing your lost HWP files.
3. Select the Drive and Run Deep Scan Launch HDH DataRecovery, select the source drive, and choose Deep Scan. This mode activates the file carving engine that includes HWP and HWPX signature detection. Quick Scan may not find HWP files if the file system index has been altered.
4. Filter by File Type: HWP / HWPX Once scanning completes, use the file type filter to show only HWP and HWPX files. You can also filter by date range if you know approximately when the file was last modified.
5. Preview and Verify Before Recovering HDH DataRecovery shows a preview of recovered HWP files so you can confirm the content is intact before purchasing a license. Select the files you want and choose a recovery destination on a different drive.
6. Open in Hancom Office or Hancom Viewer After recovery, open the files in Hancom Office or the free Hancom Office Viewer to verify content. If the file opens correctly, recovery is complete.

5. HWP vs. HWPX: What's the Difference for Recovery?

The newer HWPX format (.hwpx) is structurally similar to DOCX — it's a ZIP archive containing XML files and embedded assets. This makes it somewhat easier to recover using standard ZIP carving, but HDH DataRecovery adds HWPX-specific validation to ensure the recovered archive is correctly structured and will open properly in Hancom Office.

6. Tips for Preventing Future HWP File Loss

Enable Hancom Autosave

Go to Hancom Office Tools → Settings → Files and set autosave to every 5 minutes. Autosave files are stored separately from the main document and survive most crashes. After a crash, Hancom Office will prompt you to restore the autosaved version on next launch.

Back up to cloud storage

Korean government and enterprise users often work with sensitive documents — make sure your HWP files are backed up to a secure cloud location (Google Drive, OneDrive, or your organization's internal storage). Enable version history so you can roll back accidental overwrites.

Keep a second copy on a USB drive

For critical documents — submissions, contracts, proposals — keep a USB backup updated daily. HWP files are typically small (under 10MB), so even a 16GB USB can hold years of documents.