Notepad3

# Notepad3

**A fast, lightweight, Scintilla-based text editor for Windows**

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[Website](https://rizonesoft.com/downloads/notepad3/) · [Downloads](https://github.com/rizonesoft/Notepad3/releases) · [Documentation](https://rizonesoft.com/documents/notepad3/) · [FAQ](readme/faq/FAQ.md) · [Changelog](https://rizonesoft.com/downloads/notepad3/update) · [Sponsor](https://github.com/sponsors/rizonesoft)

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Notepad3 is a free, open-source text editor with syntax highlighting for Windows. Built on the [Scintilla](https://www.scintilla.org/) editing component and [Lexilla](https://www.scintilla.org/Lexilla.html) lexer library, it has a small memory footprint while being powerful enough for professional programming and everyday text editing.

> Notepad3 is based on code from Florian Balmer's [Notepad2](https://www.flos-freeware.ch/notepad2.html) and XhmikosR's [Notepad2-mod](https://xhmikosr.github.io/notepad2-mod/). MiniPath is based on Florian Balmer's metapath.

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## Features

### Editing
- **Code folding** with toggle-all support
- **Bookmarks** for quick navigation within files
- **Word auto-completion** with configurable fill-up characters
- **Mark all occurrences** of a selected word with occurrence count display
- **Find and Replace** with [PCRE2](https://github.com/PCRE2Project/pcre2) regular expression engine
- **[Focused View](readme/focusedview/FocusedView.md)** — filter display to show only lines matching the current word/selection (Ctrl+Alt+V), with fold, bookmark, and highlight modes
- **[TinyExpr++](readme/tinyexprcpp/TinyExprPP.md)** — inline math expression evaluation with 80+ functions (type `expression=?` to evaluate in-place, use `${expr}` in line numbering).
- **Undo/Redo** that preserves selection state
- **Visual Studio–style** copy/paste of the current line (when nothing is selected)
- **Virtual space** rectangular selection (Alt+Drag)
- **Accelerated word navigation** with configurable delimiters
- **Insert GUIDs** directly into your document
- **[Clipboard monitoring mode](readme/config/ClipboardMonitoring.md)** (`/b` command-line switch) — automatically pastes copied text at the