OpenViewer - HWP PDF Word

OpenViewer is a lightweight document viewer that opens many file formats in one place. PDF, HWP, DOCX, XLSX, PPTX, EPUB, and images — all in a single app.

No sign-up. No in-app purchases.

[Supported formats]
• PDF — fast page swipe + pinch zoom
• HWP / 한글 (Hancom) — native support for Korean documents
• DOCX (Word) / XLSX (Excel) / PPTX (PowerPoint)
• EPUB — built-in e-book reader
• TXT — plain text
• Images — JPG, PNG, WEBP, GIF

[Key features]
• Fast launch — opens instantly without heavy office suites
• Clean viewer — page swipe, pinch zoom, dark mode
• Recent files — quick access to documents you read often
• Favorites — pin important files to the top
• Multilingual UI — English, Korean, Japanese
• Privacy-first — all processing happens on your device, nothing uploaded
• No account required — minimal permissions, no data collection
• Ad placement separated — no ads inside the document viewer (no distractions)

[Who is it for]
• Professionals reviewing PDF, Word, Excel files on the go
• Students reading class materials on mobile
• Korean speakers who frequently open HWP files
• Anyone who wants a lightweight viewer instead of a heavy office app

[FAQ]

Q. Will HWP files open without breaking?
A. Yes. We natively support the Hangul (HWP) standard format. Text, tables, and images all render properly.

Q. Can I edit documents?
A. The current version is a viewer (read-only), optimized for fast review and sharing.

Q. Does it work offline?
A. Yes. Everything happens on your device. No server uploads, fully offline.

Q. Is it useful outside Korea?
A. Yes. UI in English, Korean, Japanese. Plus all global formats — PDF, DOCX, XLSX, EPUB, images.

OpenViewer is built to save you time.
Install now and open any document, anywhere.

— wowpia (Info-Gate Inc.)