HandyView is a handy image viewer for convenient viewing and comparing. It is developed with PyQt5.

Handy Series:    HandyView   HandyFigure   HandyCrawler   HandyWriting

1. Download the pre-compiled executable zip file from the release page.
2. Unzip the file
3. Set HandyView as the default image viewer, so that you can double-click the image to open HandyView.

1. Download the handyviewer.dmg from the release page and install.
2. If you fail to install the app, you may first need to disable gatekeeper first. You should be aware of the risk of disabling gatekeeper.
3. Set HandyView as the default image viewer (use cmd+i), so that you can double-click the image to open HandyView.

I used the early version of HandyView on Ubuntu. The current version is not tested on Ubuntu and may be out-of-date.

1. Clone this repo git clone https://github.com/xinntao/HandyView.git
2. How to double click to open an image
   1. Modify the HandyView.desktop file - Exec & Icon
   2. Copy the .desktop file to /usr/share/applications
3. How to change the default image viewer
   1. Right click an image
   2. Go to Properties -> Open With
   3. Choose HandyView

For python user, you can also launch HandyView from the command line:

1. Clone repo and install dependent packages

   git clone https://github.com/xinntao/HandyView.git
   cd HandyView
   pip install -r requirements.txt

2. Run

   python -m handyview.handyviewer [image_path]

• Switch among images with fixed zoom ration, which is useful when comparing image details. (Unfortunately, I cannot find such a image viewer and this is the initial motivation to develop HandyView).
• Various comparison modes.
• Show basic image information, e.g., image path, shape, size, color type, zoom ration, etc.
• Show the position and color in the current mouse cursor.
• Draw rectangles on images and show the start and end position.

• Current screenshot

• Switch among images with fixed zoom ratio

• Compare images in two-column or three-column modes

• Show the position and color of the current mouse cursor

• Draw rectangles and show the start and end positions

For Windows and MacOS users, you can find the instructions of compiling the executable program from how-to-build.

The basic operation (such as shortcut keys) could be found in the Help button in the toolbar.

• preview mode
• show zoom info for each folder (store in database)
• drag together in the multi-view comparison mode

• Simple image edit: crop, resize, color conversion, etc
• Draw rectangular and enlarged the area
• Make GIF easily

• Qt5 doc
• PyQt5 doc
• Qt Key

This project is released under the MIT license.

I have used the icons from flaticon. The following are the source links.

Icon	Link	Icon	Link	Icon	Link
	Open		History		Refresh
	Index		Include		Exclude
	Compare		Clear comparison		Help
	Main canvas		Compare canvas		Preview canvas
	Fingerprint		Auto Zoom
	Image		Crop		Video

(pip install pyqt5 -i https://mirrors.xxx.com/pypi/simple/ --trusted-host mirrors.xxx.com)

If you have any question, please open an issue or email xintao.wang@outlook.com.