Open the Terminal window in Ubuntu (Alt + Cntrl + T) and type eog to open the image viewer program. To open the image use the image name followed by the eog command. eog // You can use tab to auto-complete the filename. eog test123.

To open a PNG image with Shotwell, search for the tool in the gnome-search tool and launch. This will import all images in the Pictures directory. To open a specific tool, double-click the image from the list.

To edit PNG files, the XnView program just mentioned can be used, as well as the Microsoft Windows included graphics program called Paint, the Windows 10 Paint 3D tool, the popular GIMP utility, and the popular Adobe Photoshop.

To open a picture from terminal,

1. Install shotwell to open a picture via terminal, sudo add-apt-repository ppa:yorba/ppa sudo apt-get update sudo apt-get install shotwell.
2. Then go into the directory which contain picture you want to open, cd /path/to/the/directory/which/contains/picture.

View Images from the Terminal in Linux

1. Overview.
2. feh.
3. sxiv.
4. ImageMagick.
5. Terminal Image Viewer.
6. ranger File Manager.
7. Using the Browser as Image Viewer.
8. GUI Image Viewers.

Following are some useful ways to open a file from the terminal:

1. Open the file using cat command.
2. Open the file using less command.
3. Open the file using more command.
4. Open the file using nl command.
5. Open the file using gnome-open command.
6. Open the file using head command.
7. Open the file using tail command.

Adding PNGs to your Photoshop files is fortunately super easy! No need to “place” or use the File > Open menu. Locate the PNG file that you’d like to import on your computer. Making sure you have your Photoshop file window open in the background and in view, drag and drop the PNG file onto the Photoshop document.

How to convert PNG to JPG using Windows

1. Open the selected PNG file in the Microsoft Paint program.
2. Select ‘File’, click ‘Save as’
3. Type the desired file name in the ‘File name’ space.
4. Click the ‘Save as type’ dropdown menu and select ‘JPEG’
5. Click ‘Save’ and the file will be saved into the selected destination.

The relevant packages to install are w3m and w3m-img (on Ubuntu at least). You then need to disable the external image viewer wither by passing -o ext_image_viewer=0 or by going into the options menu (‘o’) inside w3m and disable external image viewing. Now, typing w3m will display the image in terminal.

FileViewer Plus 4 FastStone. This tool is a certified PNG file viewer that comes with a variety of features including image editing, viewing, and management. XnView. XnView is another great tool for opening PNG files. IrfanView. Windows Viewer.

To see or list the files in a directory on Linux, run ls command: ls. ls -l. If you would like to see and list files in another directory, use the ls along with the path to the directory:

Eye of GNOME

A file with the PNG file extension is a Portable Network Graphics file. The format uses lossless compression and is generally considered the replacement to the GIF image format.