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ScreenCapture

A powerful and lightweight screenshot tool for Windows, built with Qt/C++. Supports cross-screen capture, scrolling screenshots, drawing annotations, and extensive command-line integration.

Features

• Cross-screen capture, scrolling screenshots (long capture), high-DPI support, and window area highlighting.
• Color picker with hotkeys for copying RGB (Ctrl+R), HEX (Ctrl+H), and CMYK (Ctrl+K) colors.
• Drawing tools: Filled/unfilled ellipses, perfect circles (hold Shift), rectangles, squares (hold Shift), arrows, and numbered annotations.
• Line tools: Curves, straight lines (hold Shift), semi-transparent lines, mosaic, eraser, and text.
• Edit annotations anytime by hovering over them with the mouse.
• Undo (Ctrl+Z) and Redo (Ctrl+Y) support.
• Pin screenshots in new windows with mouse wheel zoom functionality.
• Save to file (Ctrl+S) or copy to clipboard (Ctrl+C or double-click).
• High performance with low memory usage and CPU consumption.
• Portable - single executable file, no installation required, no external dependencies.
• Rich command-line parameters for easy integration into other applications.

Download

Releases (8MB)

Command Line Usage

Parameter Overview

All command-line parameters are optional. Launching without parameters shows the full screenshot interface.

Basic Parameters

--path (optional): Set the save path for screenshots

# If path is a directory, filename will be auto-generated
ScreenCapture.exe --path:"D:\\screenshots"

# If path includes filename, save with specified name (overwrites if exists)
# Currently supports PNG format only
ScreenCapture.exe --path:"D:\\screenshots\\capture.png"

--lang (optional): Set application language

# Supports Simplified Chinese (zhcn) and English (en), default is zhcn
ScreenCapture.exe --lang:en
ScreenCapture.exe --lang:zhcn

--comp (optional): Compress images when saving

# Format: --comp:quality,scale_percentage
# Quality range: -1 to 9 (integer)
#   0: Minimum compression, largest file
#   9: Maximum compression, smallest file
#  -1: Default compression, medium compression
# Scale percentage range: 1 to 100 (integer)
# Note: Quality parameter has no effect when saving to clipboard
ScreenCapture.exe --comp:6,60

Screenshot Parameters

--cap (optional): Screenshot functionality, mutually exclusive with --pin

Area Screenshot:

# Capture specified area: x,y are top-left coordinates, width,height are dimensions
# Save to clipboard (clipboard parameter is optional, saves to file if not specified)
ScreenCapture.exe --cap:area,10,10,500,600,clipboard

# Save to specified path
ScreenCapture.exe --cap:area,10,10,500,600 --path:"D:\\screenshots"

Fullscreen Screenshot:

# Capture entire screen and save to clipboard (clipboard parameter is optional)
ScreenCapture.exe --cap:fullscreen,clipboard

# Capture entire screen and save to specified path
ScreenCapture.exe --cap:fullscreen --path:"D:\\screenshots"

Custom Screenshot:

# User drags mouse to define capture area, then saves to clipboard
ScreenCapture.exe --cap:custom,clipboard

# User drags mouse to define capture area, then saves to specified path
ScreenCapture.exe --cap:custom --path:"D:\\screenshots"

Long Screenshot:

# Scrolling screenshot with only four control buttons: pin, clipboard, save, close
# Also supports customization via --tool parameter
ScreenCapture.exe --cap:long

Pin Parameters

--pin (optional): Pin functionality, mutually exclusive with --cap

Pin Clipboard Image:

# Pin image from clipboard, x,y are pin window coordinates (optional)
# Default coordinates are 100,100 if omitted
ScreenCapture.exe --pin:clipboard,100,100
ScreenCapture.exe --pin:clipboard

Pin Image File:

# Pin specified image file, x,y are pin window coordinates (optional)
# Default coordinates are 100,100 if omitted
ScreenCapture.exe --pin:file,"D:\\image.png",100,100
ScreenCapture.exe --pin:file,"D:\\image.png"

Pin Area Image:

# Pin desktop area image
# Format: --pin:area,x,y,width,height,windowX,windowY
# First four parameters define capture area, last two are pin window coordinates (optional)
# Default window coordinates are 100,100 if omitted
ScreenCapture.exe --pin:area,100,100,500,600,800,10
ScreenCapture.exe --pin:area,100,100,500,600

UI Customization Parameters

--tool (optional): Control toolbar button order, position, and visibility

# Available tool names:
# Drawing tools: rect(rectangle), ellipse(ellipse), arrow(arrow), number(numbering), line(line), text(text), mosaic(mosaic), eraser(eraser)
# Action tools: undo(undo), redo(redo), pin(pin), clipboard(clipboard), save(save), close(close)
# Separator: |
ScreenCapture.exe --tool:"rect,ellipse,arrow,number,line,text,mosaic,eraser,|,undo,redo,|,pin,clipboard,save,close"

# Simplified toolbar example
ScreenCapture.exe --tool:"rect,arrow,|,clipboard,save,close"

Usage Examples

# Launch without parameters - shows full screenshot interface
ScreenCapture.exe

# English interface with custom save path
ScreenCapture.exe --lang:en --path:"D:\\screenshots"

# Quick screenshot to clipboard
ScreenCapture.exe --cap:custom,clipboard

# High-quality screenshot save
ScreenCapture.exe --cap:area,0,0,1920,1080 --comp:-1,100 --path:"D:\\screenshot.png"

# Long screenshot with simplified toolbar
ScreenCapture.exe --cap:long --tool:"pin,clipboard,save,close"

• --cap and --pin parameters are mutually exclusive; other parameters can be combined.
• Parameters start with --, cannot contain spaces, and are separated by spaces.
• Use appropriate path separators (\\ or /) based on your terminal when specifying file paths.

Integration

Example for Node.js or Electron (similar for Python):

let spawn = require("child_process").spawn;
let child = spawn("./path/to/ScreenCapture.exe");
child.on("close", (code) => {
    /// Exit codes:
    /// 0: undefined
    /// 1: quit by close button
    /// 2: quit by right mouse button
    /// 3: quit by ESC key
    /// 4: quit when copying RGB color
    /// 5: quit when copying HEX color
    /// 6: quit when copying CMYK color
    /// 7: quit when copying mouse position
    /// 8: quit when saving to file
    /// 9: quit when saving to clipboard
    console.log("Exit code:", code);
});

Supported Operating Systems

• Windows 10 1607 or Later

Hotkey Setup

Option 1: AutoHotKey

• Download and install AutoHotKey.
• Create an .ahk script file in %AppData%/Microsoft/Windows/Start Menu/Programs/Startup directory with the following content:

/*
^  :  Ctrl
!  :  Alt
+  :  Shift
#  :  Win

Example 1: Ctrl+Alt+A 
^!A::Run "path/to/ScreenCapture.exe"

Example 2: Win+Ctrl+Alt+P with long screenshot parameter
#^!P::Run "path/to/ScreenCapture.exe --cap:long"
*/

^!A::Run "path/to/ScreenCapture.exe"

• Double-click the .ahk file, then you can launch ScreenCapture.exe with Ctrl+Alt+A.
• This script will auto-start with Windows.

Option 2: SC_Starter

SC_Starter is a ScreenCapture launcher written in Rust.

• Supports auto-start with Windows
• Built-in screenshot program, no additional installation required
• Auto-registers global hotkeys
• Supports custom default save paths
• Accidental deletion protection
• Left-click system tray to screenshot, right-click to exit

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