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gThumb 3.12.0 Released! How to Install via PPA in Ubuntu 20.04

Last updated: September 20, 2021 — Leave a comment

gThumb image viewer and organizer announced version 3.12.0 as the new stable release series!

gThumb 3.12.0 is the new stable series since the last 3.10.x, while the 3.11.x is the development release.

What’s New in gThumb 3.12.0:

The new release includes many new features compare to the previous stable 3.10.x. They are all introduced in the 3.11 development releases, so you may already enjoy using them for a period of time.

With libheif library, gThumb now opens AVIF, HEIF (include Apple’s HEIC) images, and allows to save images as AVIF. And it supports JPEG XL images using the jpeg-xl library. A template editor is available to edit text values with special codes, for use in script commands, rename templates, print header and footer, etc.

Besides that, it improved file navigation for directory contains thousands of images. The file list now starts more thumbnailers in parallel, status bar has button to show the progress dialog. And the color picker tool shows colors in two more formats: rgb in % and hsl. Others include:

Allow to set shortcuts to activate filters.
Allow to mount unmounted volumes.
Add file actions to the viewer context menu.
Read color profiles from png files as well.
Option to show/hide the status bar.

For those already running gThumb 3.11.4, there are only bug-fixes and translation updates.

How to Install gThumb 3.12.0 in Ubuntu:

The software does not provide official binary package. Besides building from the source tarball, you may install it via the unofficial Ubuntu PPA.

1. Add the Ubuntu PPA.

The PPA so far provides packages for Ubuntu 20.04, Ubuntu 21.04, Ubuntu 21.10, and Linux Mint 20. It contains package for Ubuntu 18.04 but lacks JPEG XL support.

Firstly open terminal either from start menu or by pressing Ctrl+Alt+T on keyboard. When it opens, paste the command below into terminal and hit run:

sudo add-apt-repository ppa:ubuntuhandbook1/apps

2. Update system package cache.

Adding PPA will automatically refresh the package cache in Ubuntu 20.04 and higher. However old versions and some Ubuntu based systems does not. To do it manually, simply run command in terminal:

sudo apt update

3. Install / Upgrade gThumb.

Finally, either run the apt install command in a terminal window to install the image viewer:

sudo apt install gthumb

Or use the Software Updater (Update Manager) utility to receive package updates. Un-check other packages from the PPA if you don’t want them.

Uninstall / Restore gThumb:

You can restore to the stock version of the image viewer and organizer by purging the PPA repository. To do so, simply run command:

sudo apt install ppa-purge && sudo ppa-purge ppa:ubuntuhandbook1/apps

You may also keep the gThumb package but remove the Ubuntu PPA, since it contains many other software packages that you don’t prefer. To do so, either run command in terminal:

sudo add-apt-repository --remove ppa:ubuntuhandbook1/apps

Or remove the repository line under ‘Other Software’ tab via Software & Updates utility.

In Howtos, News image viewer

gThumb Image Viewer & Organizer 3.11.4 Adds AVIF/HEIF Support [PPA]

Last updated: September 20, 2021 — 3 Comments

The GNOME image viewer and organizer app, gThumb 3.11.4 was released! PPA updated with Ubuntu 18.04, Ubuntu 20.04, Ubuntu 21.04, and upcoming Ubuntu 21.10 support.

Thanks to libheif library, the new release introduced HEIF file format support, so it can now handle photos imported from your iOS devices. Also AVIF, an image file format specification for storing images or image sequences compressed with AV1 in the HEIF file format is supported, and you can save file as AVIF.

There’s a performance improvement for browsing directory with thousands of images, so users will get a smoother experience. The file list now starts more thumbnailers in parallel, status bar has a button to show the progress dialog. And the color picker tool shows colors in two more formats: rgb in % and hsl.

Other changes include:

Allow to set shortcuts to activate filters.
Added a template editor to edit text values with special codes: script commands, rename templates, print header and footer, etc.
Allow to mount unmounted volumes.
Allow to keep browsing while executing long-running external tools.
Show the properties in a single column to save horizontal space.
Bug-fixes and translation updates.

How to Install gThumb 3.11.4 in Ubuntu:

The software lacks a repository for Ubuntu packages. Besides building from the source tarball, I’ve made the packages into the unofficial PPA for Ubuntu 18.04, Ubuntu 20.04, Ubuntu 21.04, Ubuntu 21.10, Linux Mint 20 and derivatives.

The Ubuntu 18.04 package is built ~~without AVIF/HEIF support since it requires updated FFmpeg library (as dependency of libheif) that might break other packages in your system~~.

1.) Add the PPA

To add the PPA, open terminal either from the ‘show applications’ menu or by pressing Ctrl+Alt+T on keyboard. When terminal opens, run command:

sudo add-apt-repository ppa:ubuntuhandbook1/apps

2.) Install / Upgrade gThumb

You can then either upgrade the image viewer from an old version via Update Manager (Software Updater), or run command in terminal:

sudo apt install gthumb

NOTE for Linux Mint, you have to run sudo apt update to refresh package cache first.

Uninstall gThumb & the Ubuntu PPA

To remove gThumb image viewer, run command:

sudo apt remove --autoremove gthumb gthumb-data

To remove the Ubuntu PPA, either run the apt-add-repository command with --remove flag, or use Software & Updates -> Other Software.

In News image viewer

How to Install PhotoQt Image Viewer 1.6 in Ubuntu 16.04

Last updated: February 21, 2018

PhotoQt, a free open-source Qt5 image viewer supports for touch-screen, slideshow, and uploading to imgur.com, reached the 1.6 release earlier today.

PhotoQt 1.6 features:

Re-structuring of code, taking better advantage of QML property bindings
Hide most elements behind Loader items for faster start-up
Add proper touchscreen support
Add uploading of images to imgur.com
Add copy images to clipboard
Add ability to freely move main image
Add split ‘ThumbnailKeepVisible’ setting into 1) always visible, 2) visible when image not zoomed
Add Export/Import configuration and shortcuts
Add handle case of directory passed on command line (instead of image)
Add Transparency marker option
Add one shortcut for multiple functions
Redo ‘Open File’ element, more versatile and reliable
Open File now has two hover preview modes: quick (uses thumbnail) or full
Left pane of Open File element can be hidden (hides if nothing is there or window is resized rather small)
New ‘loading image’ indicator

How to Install PhotoQt in Ubuntu:

The developer offers a PPA repository with the latest packages for Ubuntu 16.04 and Ubuntu 17.10.

1. Open terminal either via Ctrl+Alt+T or by searching for ‘terminal’ from app launcher.

When it opens, run command to add the PPA:

sudo add-apt-repository ppa:lumas/photoqt

Input your password (no visual feedback while typing) when it prompts and hit Enter to continue.

2. Then install the image viewer either via Synaptic package manager or by running commands in terminal:

sudo apt-get update

sudo apt-get install photoqt

Uninstall:

To remove the software, either use Synaptic or run command:

sudo apt-get remove --autoremove photoqt

You can remove PPA repositories via “Software & Updates” utility under “Other Software” tab.

In Howtos image viewer, PhotoQt

How to Install PhotoQt Image Viewer in Ubuntu 14.04

Last updated: January 20, 2015

PhotoQt is an open-source Qt based image viewer designed to be fast, simple, good looking, yet powerful and highly configurable.

This full screen image viewer features:

Based on Qt5
Support of many image formats (use of GraphicsMagick)
Rotating, flipping, zooming images – no permanent changes
Scaling images – permanent change
Basic File Management (Renaming, Deleting, Moving, Copying)
Keyboard and Mouse Shortcuts
Set-as-Wallpaper function
Slideshow feature
Exif information
Highly Adjustable to your custom preference
Interface that doesn’t get into your way
Very fast and flexible
Thumbnail Cache
System Tray Usage
Command Line Options
Several translations available
and much more…

Install PhotoQt in Ubuntu:

The most recent release PhotoQt 1.2 brings XCF and PSB/PSD support. It’s available in PPA for Ubuntu 14.10, Ubuntu 14.04 and Linux Mint 17.

To install it, open terminal from the Dash or by pressing Ctrl+Alt+T on keyboard. When it opens, do:

1. Run command to add the PPA:

sudo add-apt-repository -y ppa:samrog131/ppa

Type in your user password when it asks.

2. Update system package cache by running command:

sudo apt-get update

3. Finally install the image viewer:

sudo apt-get install photoqt

If for some reason you want to remove PhotoQt as well as the PPA repository, run below command in terminal:

sudo apt-get remove photoqt && sudo add-apt-repository -r ppa:samrog131/ppa

That’s it.