Splitwriter

For all creators — past, present, and future.

Splitwriter is a focused writing tool built to make creative work easier.
Instead of fighting with a heavy word processor, you just open Splitwriter and start writing.

Current beta: 0.9.3-beta.4 (Portable, Windows x64)
Available languages: 한국어 (Korean), English

Free Forever — Splitwriter aims to stay free for both personal and commercial creative work.

Made by a stubborn nagger who refuses to quit, with 100% coding support from ChatGPT.
created by Crom Kim & GPT, 2025

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Why Splitwriter?

This program exists for one purpose: to support comfortable, uninterrupted writing.

• No account, no network, no cloud lock-in.
• Simple but powerful split layout for text, references, and management.
• Just enough features for long-form creative work, without turning into a full office suite.

If you want a small notebook-like tool for novels, scripts, or journals, Splitwriter is for you.

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Key Features

Core Design

• Complete Security
  Splitwriter works fully offline. It does not collect user information or require an internet connection.

• Factory Initialization
  You can reset presets and settings by deleting the configuration files — a “factory reset” is always possible.

• Free Forever
  Licensed under MIT and intended to remain free for personal and commercial creative work.

Boards

• Text Board
  Preset-based text editor for comfortable writing. Switch between headline/body/accent/emphasis presets for different parts of your manuscript.

• Echo View (Cinematic Preview) Instantly preview the selected text in a clean, full-screen, visual-novel-style layout. Echo View can display your text alone against a dark background, or combine it with the current reference image to create a scene-like presentation. Perfect for reviewing dialogue, checking flow, practicing readings, or preparing YouTube/lecture scripts.

• Image Board
  An image viewer for description and reference. Images are referenced by path only and are not embedded into the .swon file.

• Viewer Board
  Open another .swon file side-by-side in a read-only view to reference older drafts or notes.

• Manage Board
  Organize your .swon projects and user data in one place.

Layout & Interaction

• Flexible Layout
  Free horizontal/vertical splitting of panes with minimum-size guards.
  Double-click a split handle to snap panes to a clean 50 / 50 layout.

• Typewriter Mode
  Keeps the current line at a comfortable height while you type, so your eyes don’t have to chase the cursor.

• Accent Color
  A single accent color that instantly changes the overall mood of the editor.

Writing Utilities

• Auto Save
  Timer-based autosave using seconds. Your work is automatically saved at regular intervals.

• Curly Braces Replacement
  For writers who rarely use { }, Splitwriter can replace them with more writing-friendly symbols.

• Writing Goal HUD
  A small heads-up display that shows your current progress toward a writing goal.

• Undo / Redo
  Per-board history for both text and image edits (up to 20 steps, including selection restore).

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System Requirements

• OS: Windows 10 (1803) or later recommended
• Runtime: Requires Microsoft WebView2 Runtime

If the app does not start, please install the WebView2 runtime first.

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How to Run (Portable)

1. Download the latest portable ZIP from the Releases page.
2. Extract the ZIP to any folder.
3. Double-click Splitwriter.exe to launch the app.

No installation is required.

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If the App Does Not Start

Try running the bundled WebView2 installers in this order:

1. runtime/MicrosoftEdgeWebview2Setup.exe
   • Recommended (online installer, requires internet connection)
2. runtime/MicrosoftEdgeWebView2RuntimeInstallerX64.exe
   • Offline option if the first one fails

After installation, launch Splitwriter.exe again.

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Data & File Format

• Project data is saved under your local app data folder
  (a sub-folder of AppData\Local in your user profile).
• Splitwriter uses its own file format: .swon
• Existing .swon files can be opened from File → Open.

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Security Warning (SmartScreen)

This beta build is not digitally signed, so Windows SmartScreen may show a warning.

1. Click “More info”
2. Click “Run anyway” to start Splitwriter

This is expected behavior for unsigned beta builds.

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License

Splitwriter is released under the MIT License.

Free forever for personal and commercial creative work.
Made by Crom Kim & GPT, 2025.