Archives For photo

Converseen image converter announced release few days ago. Here’s how to install it in Ubuntu via PPA.

Converseen is a free and open-source tool for converting or resizing a large quantity of photo images to another format with a few mouse clicks.

The new release redesigned the Images Settings dialog. Previously, it automatically removes the metadata (information including date & time, device, and even location you capture the photo image) in output images, and replaces with only modified date and other non-sensitive data.

Now, it provides a “Remove image’s metadata” check-box. So, user can manually choose to either to remove the metadata information about the photo images in output files.

As you can see in the screenshot above, it now supports configuring the compression level and image quality for WebP images. As well, it fixes a bug that inhibits the overwrite feature when the Rename option is checked.

How to install the new Converseen in Ubuntu

The image converter is available to install in different package formats: AppImage, Snap, and Deb. Choose either one that you prefer.

1. AppImage

The software website provides the universal AppImage for downloading via the link button below:

It’s a non-install package. Just grab it, right-click and go to ‘Properties’ dialog to add executable permission. Finally, click run the AppImage will launch the tool.

2. Snap

For Ubuntu 20.04+, the snap package is the easiest way to get converseen, though it runs in sandbox. Just open Ubuntu Software, search for and install the package marked as ‘Snap Store (snap)’.

3. Ubuntu PPA (.deb)

For those who prefer the classic .deb package format, there’s unofficial PPA that contains the package for Ubuntu 18.04, Ubuntu 20.04, Ubuntu 22.04, and Ubuntu 22.10.

1. First, press Ctrl+Alt+T on keyboard to open terminal. When it opens, run command to add the PPA:

sudo add-apt-repository ppa:ubuntuhandbook1/apps

Type user password (no asterisk feedback) and hit Enter to continue.

2. Then, install the software package by running command:

sudo apt install converseen

Linux Mint user may have to run sudo apt update first to update cache.


The PPA also contains some other software packages, so you may remove it immediately after installed Liferea.

To do so, either run the command below in terminal, or remove the source line under “Other Software” tab in Software & Updates tool.

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

To remove the feed reader package, simply run command:

sudo apt remove converseen

That’s all. Enjoy!

Got photo images but not clear enough? Or you want to convert them into 4K resolution without losing quality? This app can help!

It’s upscayl, a free and open-source app for Linux, Windows, and macOS. It uses AI modules to upscale single or batch of photo images into 7680×5120 (or double resolution 15360×10240). Supported AI modules so far include:

  • Real-ESRGAN

The app has a quite easy to use user interface, which has a few buttons in left pane and image preview in right. Just follow the steps in the UI to select your Photo Image/Images, choose AI module, where to save output image, and finally click upscale.

There are as well advanced options to choose output image format: PNG, JPG or WEBP, change the app theme, and specify GPU ID for machine with multiple graphic cards. As you can see in screenshot above, output image and original one will be displayed side by side when process done, allowing to see the difference intuitively.

How to Install Upscayl in Ubuntu & other Linux

NOTE: The app needs Vulkan compatible GPU to upscale images. And, the upscale process can take long time depends on your machine.

The app offers official packages in it Github releases page available to download at the link blow:

For Linux, either download the non-install AppImage package. Right-click and go to file ‘Properties’, and enable ‘Allow executing file as program’ in Permissions tab. Finally click run AppImage at anytime to launch it. NOTE: Ubuntu 22.04+ need to enable AppImage support first by running sudo apt install libfuse2 in terminal.

For Debian/Ubuntu based systems, grab and click install the .deb package for choice. And, Fedora based systems can download and install the .rpm package instead.

Uninstall Upscayl

In case you installed the app using .deb or .rpm package, and you can’t find it in the Software app. Open a terminal window, and run command to remove it in Debian/Ubuntu:

sudo apt remove upscayl

For Fedora, just replace apt with dnf, so the command will be:

sudo dnf remove upscayl

Darkable, the popular free open-source photography app and raw developer, released new 4.2.0 release a day ago.

Darktable 4.2.0 is a big release with following changes:

  • New Sigmoid display transform module
  • Two new algorithms in the highlight reconstruction module: “inpaint opposed” and “segmentation based”.
  • Possible to preview the effect of a user-generated style on an image.
  • Read and write JPEG XL images.
  • New drop-down menu to add, remove filters.
  • Read WebP images support.
  • Support for JFIF file extension.
  • Improve AVIF & EXR format support.
  • Rework pixelpipe functionality, so it can be used elsewhere.
  • Rework snapshot module to support dynamic screen capture.
  • Enhance lens correction module.
  • Introduced balanced “OpenCL vs CPU” tiling

There are also various other improvements, bug-fixes, as well as new cameras support. See the release page for details.

How to Install Darktable 4.2 in Ubuntu, Debian, & other Linux

The software website refers to the OBS repository that contains native packages for Ubuntu, Debian, Fedora and SUSE.

For choice, here’s an unofficial Ubuntu PPA contains the packages for Ubuntu 20.04, Ubuntu 22.04, Ubuntu 22.10, Ubuntu 23.04.

Due to dependency updates, Ubuntu 18.04 is no longer supported! And, no package for Ubuntu 22.10 in this release due to a compile issue. The package for Ubuntu 22.10 is back thanks to this thread.

And, JPEG-XL library is not in Ubuntu repository until 23.04. Building it requires to update few other dependency libraries that might cause package conflicts. So I excluded the file format support in Ubuntu 20.04 and Ubuntu 22.04. If you do need this function, please leave comment here.

1. First, press Ctrl+Alt+T on keyboard to open a terminal window. When it opens, run command to add the PPA:

sudo add-apt-repository ppa:ubuntuhandbook1/darktable

2. Linux Mint use may need to run command to manually refresh package cache:

sudo apt update

3. Finally install the photography software either via the command below:

sudo apt install darktable

Or by installing package updates via Software Updater. NOTE: You are strongly advised to take a backup first.

Darktable is also available as universal Flatpak package that works in most Linux systems.


To remove darktable, simple run command in a terminal window:

sudo apt remove --autoremove darktable

And, remove the Ubuntu PPA by either removing source line in ‘Software & Updates’ utility under ‘Other Software’ tab, or running command:

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

If you would like to revert back the stock Darktable package in system repository, just purge the PPA instead of removing it as well as the software packages and install old version back.

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

The Hugin panorama photo stitcher finally announced the 2022.0.0 release! Ubuntu PPA updated for Ubuntu 18.04, Ubuntu 20.04, Ubuntu 22.04 and Ubuntu 22.10.

One year per release! The 2022 release is finally here, though there’s not so many changes!

  • Add simple edge fill option to fill black edges in panorama with homogenous color.
  • Simplified the assistant page with only the necessary GUI controls to make it more clear for beginners and casual users.
  • Several improvements to control points tab (e.g. magnifier displays now warped image for better judgement of wide angle/fisheye images).
  • Improved handling of duplicate control points when running cpfind.
  • Extended command line tools pto_mask (--delete-mask) and pano_modify (allow specifying crop relative to canvas size).

There are as well some bug-fixes in the release, including fulla flatfield extremely dark, high DPI display support for Windows, and Hugin Calibrate Lens launch issue on Debian Testing Cinnamon.

How to install Hugin 2022.0.0 in Ubuntu:

For the source tarball as well as Windows msi packages, go the sourceforge download page.

For all current Ubuntu releases, including Ubuntu 18.04, Ubuntu 20.04, Ubuntu 22.04, Ubuntu 22.10, and their based systems, I’ve made the unofficial package into this PPA repository.

I also sync the packages into the apps PPA, use either one as you prefer.

1. First, press Ctrl+Alt+T on keyboard to open terminal. When it opens, run command to add the PPA:

sudo add-apt-repository ppa:ubuntuhandbook1/hugin

Type user password (no asterisk feedback) when it asks and hit Enter to continue.

2. Update system package cache for Ubuntu 18.04 and Linux Mint, though it’s done automatically while adding PPA in Ubuntu 20.04+:

sudo apt update

3. Finally, either run the command below in terminal to install the panorama photo stitcher:

sudo apt install hugin

Or, upgrade the software (if an old version was installed) via Software Updater (Update Manager) app:

Uninstall hugin:

To remove the software package, simply run command:

sudo apt remove --autoremove hugin hugin-data

And, remove the PPA either by running command in terminal:

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

Or remove the source line from ‘Software & Updates‘ utility under Other Software tab.

RawTherapee, the free open-source raw image converter and digital photo processor, released version 5.9 recently after more than 2 years of development.

RawTherapee 5.9 features new “Spot Removing Tool” under Details tab for removing dust specks and small objects; Local Adjustments tool under Local tab for performing a wide range of operations on an area of the image determined by its geometry or color; Preprocess White Balance tool under Raw tab to specify whether channels should be balanced automatically or whether the white balance values recorded by the camera should be used instead; and a new Perspective Correction tool which includes an automated perspective correction feature.

Other changes include:

  • include CAM16 in Color Appearance & Lighting tool
  • new automatic white balance method “temperature correlation” for White Balance tool.
  • new waveform, vectorscope and RGB parade modes for the Main Histogram.
  • new dual-demosaicing methods in the Demosaicing tool
  • add saturation adjuster for Haze Removal tool

RawTherapee 5.9

There are as well many new and improved Cameras support, including Canon EOS 100D / Rebel SL1 / Kiss X7, Canon EOS 2000D / Rebel T7 / Kiss X90, Nikon D6, Nikon Z 6II, Nikon Z 7II, and more. See the release note for details.

How to Install RawTherapee:

Option 1: AppImage

The software provides official Linux package via AppImage, which is available for downloading at the link below:

Once you got the package, right-click on it to open file ‘Properties’ dialog and add ‘executable as program’ permission. Finally, click the file to launch the photography processor.

NOTE: Ubuntu 22.04+ does not support AppImage out-of-the-box. In case it doesn’t work for you, press Ctrl+Alt+T on keyboard to open terminal and run command sudo apt install libfuse2 to enable it.

Option 2: Flatpak

RawTherapee is also available as Flatpak package that runs in sandbox and works in most Linux.

1. First, open terminal (Ctrl+Alt+T) and make sure the daemon package is installed by running command in Ubuntu 20.04, Ubuntu 22.04 and higher:

sudo apt install flatpak

Ubuntu 18.04 user can get the package from this PPA.

2. Then, install Rawtherapee as Flatpak by running command:

flatpak install

Like normal package, you can search for and launch the flatpak app from either ‘Activities’ overview or system start menu depends on desktop environment.

(Optional) To remove the Flatpak package, use command:

flatpak uninstall --delete-data com.rawtherapee.RawTherapee

Option 3: Ubuntu PPA

The software does not has an official PPA for Ubuntu user. But you can keep an eye on this page for third-party PPAs.

Or leave comment here to request one. I don’t use RawTherapee, but if you prefer to install it as native .deb I can built it into my personal PPA.