How to upscale images on Linux
Need to upscale some images from lower resolutions to higher ones on your Linux PC? With the Upscaler app, you can! Upscaler is a simple Flatpak app for Linux that when used, can scale any image to a higher resolution. Here’s how to upscale images on your Linux PC with the Upscaler tool.
Before we begin
Upscaler is an excellent tool, and with it, you can enlarge images quite well. However, Upscaler isn’t perfect. You may run into issues when enlarging an image. At times, you may have an issue where it comes out pixelated and doesn’t look as good as expected. Use at your own risk!
How to install Uplscaler on Linux
Upscaler is installable only through Flathub as a Flatpak, and the Flatpak packaging format is all that the developer has chosen to support. However, Flatpak is an excellent package format and is well supported on 99% of Linux OSes, so getting Upscaler working is easy.
To start, you must open up a terminal window. YOu can open up a terminal window on the Linux desktop by pressing Ctrl + Alt + T on the keyboard, or, by searching for “Terminal” in the app menu and launching it that way.
With the terminal window open, use your distribution’s package manager to install the “Flatpak” package. This package is responsible for enabling Flatpak on your computer, so it is important.
Ubuntu installation
On Ubuntu, you’ll need to install the “flatpak” package using the apt install command.
sudo apt install flatpak
Debian installation
If you’re on Debian, you must install the “flatpak” package using the apt-get install command.
sudo apt-get install flatpak
Arch Linux installation
Those on Arch Linux need to install the “flatpak” package using the pacman -S command.
sudo pacman -S flatpak
Fedora installation
On Fedora, you will not need to install Flatpak, as it is installed already.
OpenSUSE installation
Flatpak should already be installed on OpenSUSE, so there is no need to install it.
After installing the Flatpak package on your computer, you must enable the Flathub app store. Flathub delivers apps like Upscaler to users as Flatpak packages. You can enable the Flathub app store on your computer using the following flatpak remote-add command.
flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
Once the Flathub repo is added to Flatpak on your system, you will be able to install Upscaler on your Linux PC as a Flatpak package.
flatpak install flathub io.gitlab.theevilskeleton.Upscaler
When the app is installed on your Linux PC, you will be able to launch it via the app menu on the Linux desktop. Alternatively, you can launch the Upscaler tool right from the terminal with the following flatpak run command.
flatpak run io.gitlab.theevilskeleton.Upscaler
How to upscale images on Linux
To upscale an image on Linux with the Upscaler application, do the following. First, launch the Upscaler tool on the Linux desktop. You can launch the app by searching for “Upscaler” in the app menu. Alternatively, you can launch the app via the command below in a terminal window.
flatpak run io.gitlab.theevilskeleton.Upscaler
Once the Upscaler application is open, follow the step-by-step instructions below to upscale an image on your Linux desktop.
- After launching the Upscaler application, find the “Open Image” button. Once you’ve located the button, select it with the mouse. Upon selecting the “Open Image” button, a pop-up window will appear.
- In the pop-up window, browse for the image file you wish to upscale. After locating the file, select it to load it into the app. Once the image is loaded into the Upscaler app, you will see the image size and the post-upscale size.
- Find the “Save location” area, and click the “(None)” button. When you select this button, a pop-up window will appear. Write the name of the new image in the pop-up window. Then, after naming it, browse for a location to save your newly upscaled image file.
- Once you’ve decided on your save location in Upscaler, find the “Upscale” button, and click on it with the mouse. Once you select this button, the Upscaler app will show a progress bar that says “Upscaling. This could take a while.” Be patient, and allow the image to upscale.
- Repeat the 4 steps above to upscale as many images as you wish to on your Linux PC.
With Upscaler finished, open up the Linux file manager. Once it is open, browse to the location where you upscaled your image. Double-click on it to open up the upscaled image in your distribution’s default image viewer.
