All-in-one PDF program for Windows · Built on our own engine

Easy to read, easy to edit —
your PDF program

A compact toolbar with just the essentials, so anyone can view and edit right away. Convert PDFs to Word and PowerPoint with our 100% in-house engine, create PDFs straight from the right-click menu, and make scans searchable with the high-accuracy OCR pack — everything happens on your own PC.

Compact, essential menus Word · PPT · image conversion Right-click PDF conversion 100% in-house engine Files stay on your PC
Why HanFlow PDF?

Only what you need, made simple

We stripped away the clutter so everyday PDF work is fast and comfortable.
The core features run on our 100% in-house engine — your documents never leave your computer.

1
Clean reading and editing screen

Easy to read,
easy to edit

A clean screen with just the essentials — anyone can use it.

2
Convert PDF to Word, PowerPoint, HTML, text and images

Word · PPT · HTML
full conversion

One click turns your PDF into an editable document.

3
Highlight
High-accuracy OCR for scanned documents

Scanned pages become
searchable text

The optional high-accuracy OCR pack (deep-learning engine) recognizes scanned documents — download only if you need it, language packs included.

Add-on OCR pack · offline
4
Privacy
All processing happens locally on your PC

Everything runs
on your own PC

Viewing, editing, conversion and OCR are all processed locally. Nothing is uploaded anywhere.

No cloud upload
Feature 1

Easy to read, easy to edit

A clean screen with only the tools you actually use. Add text, highlight, and draw with the pen — anyone can annotate right away.

Compact menusEasy editing
HanFlow PDF editing screen — view, edit, highlighter and convert tools with page thumbnails
Feature 2

Word · PPT · image conversion

One click turns your PDF into an editable document, or saves it as PNG images. Tables and formatting carry over so you can keep working.

→ Word→ PPT→ HTML→ Images
Convert a PDF into Word or PowerPoint documents
Feature 3 · Highlight

Scanned pages become
searchable text

Add the high-accuracy OCR pack (modern deep-learning engine) and scanned documents become selectable, searchable, copyable text — fully offline, with downloadable language packs.

Searchable PDFOffline OCRLanguage packs
OCR recognizes a scanned document into searchable text
💚 Your documents never leave your PC.
Viewing, editing, conversion and OCR all run locally on our in-house engine — nothing is uploaded to any server. Bonus: HanFlow PDF also converts Korean HWP/HWPX (Hangul) documents to PDF with the same engine, a rare capability outside Korea.
All features

Everything you need for PDF work

View, edit, annotate and convert — no more juggling between programs.

Comfortable viewing

Fit to width or page, zoom, single/two-page and continuous scrolling, plus a full-screen presentation mode.

View modesPresentationBackgrounds

Direct text editing

Add and edit body text with character-level selection, drag, copy and paste. Line wrapping follows the box width naturally.

Add textCopy & paste

Highlighter · pen · shapes

Highlight, draw freely, and leave notes with shapes and text boxes — perfect for review and proofreading.

HighlighterPenShapes

Word · PPT · HTML · text · image conversion

Convert PDFs into editable Word or PowerPoint files, layout-preserving HTML, plain text, or PNG images — tables and formatting preserved.

WordPPTHTMLTextImage

High-accuracy OCR (add-on)

Recognize scanned pages into searchable, copyable text with a modern deep-learning engine. Download the compact engine pack plus the language packs you need.

Searchable PDFLanguage packsOffline

Page thumbnails

Navigate long documents at a glance from the side panel and jump to any page instantly.

ThumbnailsQuick jump

Tabs & multi-window

Open several PDFs in tabs, drag a tab out into its own window, or merge windows back — great for comparing documents.

TabsSplit / merge

Drop a file, get a PDF

Drop Word, image or HTML files onto the window and they convert to PDF automatically and open in a new tab — no separate converter needed. Korean HWP files get a convert/compress choice.

Drag & dropAuto-convert

Security & signatures

Protect documents with AES-256 passwords and print/copy/edit restrictions, and place hand-drawn signatures or stamp images anywhere.

AES-256PermissionsSignatures
Install & start

Up and running in 3 steps

No sign-up, no payment — download and start right away.

1

Download

Click Free Download to get the installer (.exe).

2

Install

Run the file and follow the prompts — it takes a minute or two. The installer speaks your language.

3

Use right away

Open a PDF to view and edit, convert documents, and add the OCR pack if you work with scans.

System requirements

Installation info

Operating system
Windows 10 / 11
Download size
about 170MB
Price
Free (personal) · Pro license available
What's free
Free forever · PDF viewing · editing · annotation · page management
1-month free trial · Document conversion (Word · PowerPoint and more) — a Pro license is required after the trial

Get started now

Install and try PDF viewing, editing and conversion for free.

Free Download (Windows · 170MB)