A Premium WinUI 3 Desktop Text Editor Shell with WebView2 Hybrid Core
Ueditor is a high-performance, elegant, and modern desktop text editor shell built for Windows. It marries the robust, native desktop capabilities of WinUI 3 (.NET 10.0) with the rendering flexibility of a WebView2-based custom core.
Designed for developers, writers, and power users, Ueditor provides a fluid, distraction-free environment. It features standard workspace tools like a live Markdown/HTML/LaTeX previewer, a built-in terminal, comprehensive Git integration, multi-provider secure AI assistance, and a virtualized editor core capable of opening and editing files from small snippets to 200MB+ logs seamlessly.
- Massive File Support: Instantly open and edit extremely large files (200MB+ logs or source code) with zero lag, keeping the editor highly responsive.
- Virtual Scrolling: Renders only visible viewport lines plus an overscan buffer, keeping DOM elements minimal and rendering fast.
- Syntax Highlighting: Premium, high-performance syntax coloring for Markdown (headers, lists, blockquotes, bold/italic, code blocks, links), C#, JavaScript, Python, HTML, CSS, LaTeX, and many more.
- Auto-Completion & Snippets: Intelligent auto-completion suggesting variables, keywords, and customizable snippets (such as Markdown tables, LaTeX matrices, HTML5 shells, C# notifier properties) that insert seamlessly via Enter or Tab.
- Rich Markdown Toolbar: Quick-apply styling (bold, italic, underline, list, color, tables) to selected text.
- Mica Backdrop & Dark Mode: Native Windows themes using a high-fidelity Mica backdrop.
- Multi-Pane Splitters: Easily adjust sidebars, preview sections, and terminal panes via interactive C# split-controls.
- Always on Top & Sticky Notes: Pin your editor window or transform to sticky notes directly from the toolbar.
- Live Renderer: View Markdown, HTML, Aozora or LaTeX (powered by KaTeX) in a split view or an external browser.
- Multi-Provider: Connect with Gemini, OpenAI, or local LM Studio endpoints.
- Secure Storage: API keys are securely saved via native Windows Credential Manager.
- AI Translation: Fast translation of selected text to/from Korean, English, Japanese, Chinese, French, Spanish, German, etc. while safely preserving code structure, markdown formatting, and commands.
- AI Custom Commands: Execute custom prompts, instructions, and arbitrary questions directly on selected editor blocks or file contexts.
- Context Actions: Quick AI actions (Explain, Refactor, Summarize, Fix) on selected text.
- PowerShell: Launch terminal sessions directly beneath your editor canvas.
- Path Syncing: Automatically matches the terminal's working directory with the active workspace.
- Status Tracker: View staged/unstaged changes, stage/unstage files, execute commits, and push to remotes.
- History Viewer: Visual repository branch and commit history logs.
- File & Folder Bookmarks: Pin any file or folder to your Favorites panel for instant one-click access — no more digging through deep directory trees.
- Right-Click to Add: Simply right-click any file or folder in the Explorer panel and select "Add to Favorites" from the context menu.
- Global Lookup: Folder-wide multi-file search with Match Case, Whole Word, and Regex filtering.
- Jump-to-Source: Double-click search results to open the file and focus the exact line.
Ueditor is designed for speed and productivity, packing standard IDE shortcuts and premium interactive elements.
| Shortcut | Description |
|---|---|
Ctrl + N |
New Tab - Opens a brand new blank editing tab. |
Ctrl + S |
Save File - Instantly saves the active file. |
Ctrl + O |
Open File - Opens the native file picker to select documents. |
Ctrl + F |
Find/Search - Opens the inline search bar within the editor. |
Ctrl + W |
Close Tab - Closes the active editing tab. |
Ctrl + P |
Print Document - Prints the active document using standard print flow. |
Ctrl + 1 |
Toggle Left Panel - Instantly shows or hides the left workspace sidebar (explorer, search, git, bookmarks). |
Ctrl + 2 |
Toggle Right Panel - Instantly shows or hides the right side live preview/assistant pane. |
Ctrl + ` |
Terminal Toggle - Instantly shows or hides the native embedded terminal. |
Ctrl + Z |
Undo - Reverts the last text editing action. |
Ctrl + Y |
Redo - Re-applies the last reverted text editing action. |
Ctrl + C |
Copy - Copies selected text to the clipboard. |
Ctrl + V |
Paste - Pastes text from the clipboard to the active cursor position. |
Ctrl + X |
Cut - Cuts selected text to the clipboard. |
Ctrl + Mouse Wheel |
Zoom In/Out - Scale the editor's text size dynamically. |
Ctrl + Enter |
Send AI Prompt - Fast submit inside the AI input text prompt box. |
- Custom Text Color Selector:
- Right-Click on the
TextColorbutton to summon the native Color Picker dialog, allowing you to select and configure custom text colors precisely.
- Right-Click on the
- AI Target Language Selector:
- Right-Click on the translate button to open a context menu enabling you to switch target translation languages (Korean, English, Japanese, Chinese, French, Spanish, German) instantly.
- Add to Favorites:
- Right-Click any file or folder in the Explorer panel and choose "Add to Favorites" to instantly pin it to your Favorites sidebar for quick access.
You can download the latest installer (built using Inno Setup) from the Releases Page.
To build and run Ueditor locally, make sure you have:
- Windows 10 / 11
- Visual Studio 2022 (v17.10 or later recommended)
- .NET 10.0 SDK
- Windows App SDK component installed inside Visual Studio.
- WebView2 Runtime (installed by default on modern Windows).
- Clone the Repository:
git clone https://github.com/kirinonakar/Ueditor.git cd Ueditor - Open the Solution:
Open the
Ueditor.slnx(orUeditor.csproj) inside Visual Studio. - Restore & Build:
Visual Studio will automatically restore NuGet packages (such as
Microsoft.WindowsAppSDK). - Run:
Set the startup project to
Ueditorand pressF5to build and run in unpackaged mode.
This project is licensed under the MIT License - see the LICENSE file for details.
Copyright (c) 2026 kirinonakar. All rights reserved.