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WZ Reader · Unified document viewer

Many document formats.
One viewer for your work.

Letters, reports, presentations, spreadsheets, mail and images—open them in WZ Reader without switching apps for each format. Move from viewing to search, OCR, speech, presentation and PDF export, then connect recurring tasks to AI with MCP.

Web & Desktop — No document uploads to WZ service servers
Install Free for Windows Try it in your browser →

Windows 10/11 · MIT Open Source · Always up to date · Local document processing

PDFHWP · HWPXWord · PowerPointExcel · CSVEML · MDPNG · JPG · TIFF
WZ-PDF desktop screenshot showing on-screen markup, PDF to EXE export menu
AI · MCP 15 Tools
No Upload

Earlier WZ PDF interface · The current app is named WZ Reader.

Many formats, one workspace

HWP, HWPX, PDF, Word, PowerPoint, Excel, mail, Markdown and images

Find it. Convert it.

Document search · Scan OCR · PDF export

Automate recurring work with AI

15 MCP tools for reading, searching, conversion and editing

Process documents on-device

No document uploads to WZ service servers

Core Features

One viewer for your everyday documents

HWP, PDF, Word, PowerPoint, Excel, mail, Markdown and images share one familiar workspace. Stop finding a different app for each document.

Unified document viewer
📂

Different formats. The same viewer.

View HWP, PDF, Office, mail, Markdown and images together. Supported formats include HWP/HWPX, DOCX, PPTX, XLSX, XLS, ODS and CSV, with search, printing and PDF export. Office viewing is read-only.

WZ-PDF PDF to EXE Portable Executable feature and signature dialog screenshot

PDF task example from the unified viewer · HWP, Office, mail and images open in the same app.

LOCAL OCR
🔍

Korean & English OCR, fully offline

Recognize Korean and English in scanned PDFs and images on-device. Saving after OCR retains a searchable, copyable text layer; read-aloud can then speak the recognized text.

100% Free
✂️

A unified viewer with PDF finishing tools

Organize and merge pages, add stamps, signatures and watermarks, and set passwords. Save your stamp size, paste it onto multiple pages, and undo edits with Ctrl+Z.

Present & Record
📊

Present, listen and make a video

Present fullscreen and highlight key points with pen and laser tools. PowerPoint files with speaker notes can become MP4 videos with narration and optional subtitles.

🔄

Package any document as a standalone EXE

Bundle PDF, HWP, Office, mail, Markdown or images with a viewer in their original format. Recipients open them on Windows without installing a separate viewer, including PowerPoint notes and read-aloud tools.

ONE VIEWER · MANY FORMATS

One document viewer. More ways to get work done.

Review letters, reports, presentations, spreadsheets, mail and images together, then move into conversion, presentation, delivery and automation. WZ Reader is a unified viewer that goes beyond viewing.

DOCX · PPTX · XLSX

View Office files without Office

View Word tables and images, PowerPoint slides, and Excel sheets with cell formatting. Export searchable PDFs. Editing the original Office files is not supported.

LOCAL SPEECH · MP4

Listen to documents. Make narrated videos.

Local speech reads documents with sentence navigation. OCR makes scans readable aloud; PPTX speaker notes become MP4s with narration and optional subtitles.

IMAGE ZIP · TIFF · PDF

Many photos. One PDF.

Open folder images, selected photos, image ZIPs and multi-page TIFFs. Arrange them and save as one PDF; JPEG photos are embedded without recompression.

SELF-HOSTED · IFRAME

A designated-document viewer for your portal

Embed a self-hosted viewer with an iframe. Private mode restricts arbitrary file opening, saving and editing, with optional printing. Enforce document access permissions separately on the server.

Speech and EXE creation require initial component preparation. MP4 creation, command-line conversion and the built-in MCP server are Windows app features.

Discuss document automation and AX
AI DOCUMENT AUTOMATION

The moment you delegate document work to AI

The built-in MCP server offers 15 tools to read, search, convert and save documents without a separate Node.js install. Air-gapped deployments can connect to an internal AI system that supports MCP.

Ask your AI this

“Convert the HWP, Word and PowerPoint files in this folder to PDF, find pages mentioning CONFIDENTIAL, and add a watermark.”

Mixed-format documentsdoc_to_pdfpdf_searchDone
topdf report.docx slides.pptx data.xlsx -o converted Mixed files to PDF

Connect mixed-format documents to AI work

doc_get_text reads supported document content, including PowerPoint notes and Excel sheets. doc_to_pdf converts multiple formats for PDF search and processing.

15 document automation tools

New doc_get_text, doc_info and doc_to_pdf tools join PDF search, split, merge, page editing, watermarks, stamps and text overlays.

Local folder sandbox

Restrict automation to an approved working directory and keep the scope under control.

Server included with the app

The app runs MCP with its own runtime. Existing WZ PDF executable paths and MCP settings continue to work after the rename.

LIVE DOCUMENT PREVIEW

See the unified viewer with real documents

HWP and PDF are two examples from the supported formats—not the limit of the viewer. WZ Reader also opens Word, PowerPoint, Excel, mail, Markdown and images.

HWP

Document example 01 · HWP

Open, zoom, search and present an HWP document in your browser without installing Hancom Office.

Open full screen
PDF

Document example 02 · PDF

Show a crisp PDF directly inside a web page instead of forcing visitors to download it.

Open full screen

Two examples from a multi-format viewer, not its full format list. Public samples are fetched and displayed in your browser. HWP sample: rhwp

DOCUMENT TO EXE

Your Document and Viewer.
One Windows File.

Bundle PDF, HWP, Office, mail, Markdown or images with a viewer in their original format. Recipients open them on Windows without installing a separate viewer, including PowerPoint notes and read-aloud tools.

  1. 1

    Open the document to share

    Open your PDF, HWP, Office file or mail in WZ Reader.

  2. 2

    Choose Export to EXE

    Use the menu beside Save. On first use, download the runtime or supply a matching portable build.

  3. 3

    Standalone file ready

    Open it on Windows without installing a viewer. Original formats and PDF passwords, stamps and OCR results are preserved. Check the recipient organization’s EXE execution policy.

Install Free for Windows Try it in your browser →
WZ-PDF EXE export menu open
PDF Editor

A unified viewer with PDF finishing tools

Organize and merge pages, add stamps, signatures and watermarks, and set passwords. Save your stamp size, paste it onto multiple pages, and undo edits with Ctrl+Z.

  1. 1

    Save selected pages or a two-page booklet

    Export just the pages you need or a PDF matching the two-page view. Booklets retain text, stamps, signatures and OCR results.

  2. 2

    Reusable stamps, passwords and undo

    Remove white stamp backgrounds and paste across pages. Set or remove PDF passwords and check unsaved changes before leaving.

WZ-PDF PDF Editor feature
REAL WORKFLOWS

Focus on the job, not the file format

More than a viewer: WZ Reader follows the document from arrival through review, production, presentation and delivery.

01

Public, legal & finance review

Review letters, contracts, reports, spreadsheets and mail in the same viewer. Search different document formats, then convert material to PDF for page organization and sharing.

02

Training and instruction videos

Turn PowerPoint speaker notes into MP4s with narration and subtitles for repeat training and operational guidance.

03

Batch-convert mixed document formats

Use topdf to convert mixed-format files to searchable PDFs and connect scripts, schedulers or MCP workflows.

04

Client-ready document delivery

Send a standalone EXE or self-contained HTML viewer and reduce recipient software and setup issues.

🔒

The simplest security rule for confidential documents

Process files in your browser or PC instead of uploading to online converters. For AI integration, choose a model and environment that fit your data policy.

🖥️

Conversion, OCR and speech stay local

Documents are not uploaded to WZ service servers. Connecting MCP to a public AI service can send extracted content to that provider. Use an internal AI deployment for confidential work.

Zero Upload
👤

No account or login required

No signup or login is required to use the viewer. Convenience settings such as recent file paths and saved stamps are stored on your device.

No Account
🚫

Prepare before air-gapped deployment

Speech models require an initial download. EXE export needs a runtime downloaded once or supplied using a matching portable build. Prepare these components and verify internal AI connectivity before deployment.

Prepare Components
✅ 100% Local Processing
✅ Zero Server Storage
✅ Offline after setup
✅ Internal AI integration
Presentation

From presentation deck to narrated video

Press F5 to present the document you have opened. PowerPoint speaker notes appear below slides or as fullscreen captions; read-aloud advances pages as it speaks.

  1. 1

    Pen, highlighter, arrow, laser & spotlight

    ZoomIt-style keyboard tools, USB clicker support, swipes and click-to-advance keep delivery fluid and focused.

  2. 2

    Turn speaker notes into an MP4

    The Windows app exports PPTX files with notes as one MP4 with narration and optional subtitles. Use it for training and instructions. PowerPoint object animations are not included.

WZ-PDF Presentation highlighting feature
WZ-PDF Presentation 2-page view feature
Platform

Instant on the web. More powerful on Windows.

View files instantly on the web or embed the viewer in your portal. Windows adds local speech, MP4 creation, batch conversion, MCP and EXE export. Documents are not uploaded to WZ service servers.

Desktop App

Windows app with AI automation

The installer adds file associations and automatic updates. Use local OCR, speech, MP4 creation, topdf, MCP and EXE export in one app. Some features require initial component preparation.

  • ✓
    HWP · PDF · Office · mail · images
  • ✓
    15 MCP document tools for AI
  • ✓
    topdf · hwp2pdf batch conversion
  • ✓
    Read-aloud · narrated MP4 · automatic updates
Free Download (Windows)
Web Version

Open instantly in your browser

Open supported workplace documents in your browser or embed the unified viewer in your portal. Self-hosted private mode displays designated documents; authentication and permissions remain server responsibilities.

  • ✓
    No install required
  • ✓
    HWP · PDF · Office · mail · Markdown · images
  • ✓
    Embeddable website viewer
  • ✓
    Responsive desktop · tablet · mobile
Try it in your browser →
FAQ

Questions teams ask before adopting WZ Reader

Which documents can I open?

WZ Reader is a unified viewer for workplace documents. It supports HWP/HWPX, PDF, Word (DOCX), PowerPoint (PPTX), Excel (XLSX/XLS/ODS/CSV), mail (EML), Markdown, and images (PNG/JPG/GIF/BMP/WebP/TIFF). Review them in one workspace without switching viewers. Editing and export capabilities vary by document format.

Can I search or copy document text?

Text-based PDF, HWP, Office, mail and Markdown support search and text workflows. Run OCR on scanned PDFs and images to recognize text for search, copying and read-aloud. Searchable PDF export and available tools vary by format.

How is viewing different from editing?

WZ Reader is first a unified viewer for mixed-format workplace documents. It also provides PDF page editing, merging, stamps, signatures and watermarks. Office viewing is read-only, so it does not replace an editor for the original Word, PowerPoint or Excel files. Viewing, conversion and editing capabilities vary by format.

Are WZ PDF and WZ Reader different products?

They are the same product. The name changed from WZ PDF to WZ Reader to reflect its role as a unified viewer for many workplace document formats. Settings, recent files, stamps, speech models and installation locations are retained. Automatic updates are installer-only; older installations and portable builds need a manual download.

Are documents really never uploaded to a server?

Viewing, conversion and OCR run in your browser or PC; documents are not uploaded to WZ service servers. However, MCP connected to an external AI can send extracted content to that provider. Use an internal AI system for confidential work.

Can it run on an air-gapped network?

The Windows app processes local documents. Speech needs its models prepared first; EXE export needs a downloaded runtime or a matching portable build. Verify component provisioning and internal AI connectivity before air-gapped deployment, and configure automatic updates according to your organization policy.

Does AI integration require a developer environment?

The installer includes an MCP server with 15 tools and needs no separate Node.js install. Register the executable path and allowed working folder in your MCP client. Existing WZ PDF MCP settings work with WZ Reader.

Can I embed the unified viewer in an internal system?

Yes. Embed the self-hosted web viewer with an iframe to display supported documents inside a page. Private mode limits viewing to designated documents and restricts arbitrary file opening, saving and editing. It is not DRM or access control; enforce login and document permissions on your server.

Is it free, and can businesses use it?

WZ Reader is a free open-source project under the MIT license. Review both the project license and included third-party notices before redistribution or reuse.

Get Started

Your next document job. One WZ Reader.

Start viewing, searching, converting and presenting in one document workspace. HWP, PDF, Office, mail, Markdown and images are supported together. Existing WZ PDF settings and MCP connections are retained.

Download the latest version Portable version View on GitHub
View latest release notes and checksums

Windows 10/11 · Installer and portable builds · MIT License