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gThumb

gThumb is an image viewer, image browser, image editor, and photo manager utility.  
Picture
How to Install gThumb:

   1. Open the Terminal (Shortcut: Ctrl + Alt + T)
   2. Type the following command: 
 sudo add-apt-repository ppa:dhor/myway
   3. Press Enter or Return and type in your password
   4. Type the following command:  sudo apt-get update
   5. Type the following command:  sudo apt-get install gthumb
   6. Type Y and press Enter or Return



How to Uninstall gThumb: 

   1. Open the Terminal (Shortcut: Ctrl + Alt + T)
   2. Type the following command:  
sudo add-apt-repository --remove ppa:dhor/myway
   3. Type the following command:  sudo apt remove gthumb
You can use your Page Up or Page Down arrow keys to move through your images folder.
You can also click on the Next image button or Previous image button that will hover over your image when you put your mouse pointer over your image.
Picture
If you click on the Thumbnail button on the bottom right, you will see thumbnails of the images in your current folder. You can turn it back off by clicking on it again.
Picture
Underneath the Titlebar is the Toolbar that contains 13 buttons. A = View the folders, B = Fullscreen, C = Set to actual size, D = Fit to window if larger, E = Resize, F = Rotate Left, G = Rotate Right, H = Properties, I = Edit file, J = Comment, K = Tags, L = Tools, and M = Menu.
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When you click the Edit file button, you will see a list of options that will allow you to edit your image.
Picture
In the slideshow below, you can see a brief description of each editing feature or tool.
To crop an image with gThumb, you need to be in the edit mode. Clicking the Edit file button on your toolbar will give you access to the editing features (as seen in the image above).  Select the image you want to modify or crop and then click the Crop button under the Format section. You can now drag the gridded window over the area you wish to crop and when you have finished click the Accept button. You can the click the Save button to save the changes to your image or click the Save As button to give your modified image a new name.
Picture
Clicking on the ... button or Menu button will create a drop-down menu.
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You can make changes in gThumb Preferences. You will see six tabs on the left side of the gThumb Preferences dialog box. They are General, Browser, Viewer, Saving, Print, and Extensions.
You can resize an image by clicking on the Tools button on the toolbar. When the drop-down menu appears, click on the Resize Images... button.
Picture
A Resize Images dialog box will appear to allow you to change the size of your image. As you can see on the status bar across the bottom of the gThumb viewer, the size of the image is 7952 x 5304 and it's 7.1 MB in file size. My screen resolution is 1920 x 1080 so I resized the huge image to save storage space. I entered 1920 in the Width section and 1080 in the Height section and then I clicked the Execute button to resize the image.
Picture
You will then be prompted with an Overwrite dialog box. You then have the option to overwrite the old file or give your new image a different name.
Picture
If you look on the status bar you will see the image is now 1920 x 1080 and is 470.3 kB or .470 MB. This will save a lot of storage space just by resizing one image.
Picture
You can view an image's Metadata by clicking on the Propeties button on the toolbar.
Picture
With digital photography we now have to be concerned about "metadata" or the hidden information embedded within your photos. The information found within your photo might include items like the GPS coordinates of the photo’s location, the date and time it was taken, the camera type and shutter settings, and the software used to edit the photo. To a photographer this information is great to help him or her organize their photos; however, if you are a parent you don't want your child taking photos and uploading them to the Internet exposing their current location via GPS coordinates. As you can see in the image below, it was taken by a Samsung SM-G920W8 camera and the GPS coordinaces provides the address of Wilmington Trail in Essex County in New York. You can find a lot of websites online that looks at the metadata of digital images and provides you with an address for example, Pic2Map Photo Location Viewer.
Picture
https://www.pic2map.com/lufmrs.html
Below is a picture that my brother took when he went to California in April 22, 2014. He went for an interview to be on Big Brother 16 US. The next day he e-mailed me several pictures from his trip. At the time, I was not allowed to show anyone any of the photos he sent me; however, now since he's already been on the show it's no big deal. As you can see in the metadata of the image his photo was taken on an Apple iPhone 4 and it provides you with a lot of other information. However, he did not have his iPhone set to record GPS coordinates to embed in his images.
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I uploaded his photo on pic2map.com just to make sure that no GPS information was embedded in his photo.
Picture
https://www.pic2map.com/utqbwb.html
gThumb allows you to remove or delete the metadata from an image by clicking n the Tools button and then click on the Delete Metadata option.
Picture
You will be prompted with a small dialog box making sure that you want to permanetly delete the metadata of your selected image.
Picture
The metadata recorded by the iPhone 4 is now removed from the image. If the original image did have GPS coordinates embedded within it, then you no longer could find the location where the image was taken. 
Picture
gThumb is also a great photo management software. You can use it to label, group, and organize your photos. gThumb can organize your images into catalogs based on the date images were taken or edited or by tags of the images. For more infomation on managing your images look under the File Management section on the gThumb Help website.
Picture
gThumb comes with a lot of editing tools for touching-up your photos and it comes with batch tools to allow you to modify multiple images simultaneously. gThumb supports .jpg, .jpeg, .gif, animated .gif, .tiff, .png, and .webp (not animated .webp images) image formats. gThumb also supports plug-ins to extend or expand the capabilities of the program. 

I do not use gThumb as my default image viewer, but I do have it installed on all my linux machines because of its quick editing features such as cropping and resizing an image.
gThumb Help
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Image Viewers | Home | Graphics Software

Feb 13, 2020
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  • Home
    • Screen Tearing on Intel Graphics
    • Screen Tearing on AMD Graphics
    • How to install Realtek WiFi Driver >
      • How to install Realtek WiFi Driver (Pt 2)
    • Authentication is Required to Mount
    • Traditional Menu
    • Software >
      • App Grid
      • AppCenter
      • GNOME Software
      • Modern Apps
    • Welcome & Software Boutique
    • Remove Welcome & Software Boutique
    • TeamViewer
    • Simple How to Tips >
      • Change Wallpaper
      • Pin a Program
      • Change Date & Time
      • Enable Screensavers >
        • Cosmos Screensaver
      • Decrese Icon Padding
      • Enable Magnification
      • Fading Windows
      • Replace Clock Indicator
      • Remove Media Players
      • Create a Submenu
      • Remove the Collection Menu
      • Preferred Applications
      • Upgrade LibreOffice
      • Install Fonts >
        • Install New Fonts
      • Play a DVD
      • Enable Livepatch
      • Update Software
      • Unresponsive Program
      • Install HWE >
        • Install HWE 20.04
      • Open HEIC Images
      • Open WebP Images
      • USB Flash Drive
      • No Audio
      • Screen Flickering
      • Screen Blanking
      • Draining Battery
      • Reduce Shutdown Time
      • Create a Mount Point
      • Thunderbird Emoticons
      • Sound Preview
      • Failed To Download >
        • Failed to Download (#2)
      • Enter Password to Unlock
      • Two Wifi Icons
      • System Program Problem
      • CD Burner Issue
      • Firefox Homepage Fix
      • VLC Closes Fix
      • Desktop Error
      • Trash Bin
      • MATE Weather Applet
      • OpenGL: renderer: llvmpipe
      • PolicyKit vulnerability
    • Install Ubuntu MATE >
      • Burn an ISO to DVD
      • Create a Bootable USB
      • Upgrade Ubuntu MATE
  • Ubuntu MATE
    • How to Scan
    • How to Take a Screenshot
    • How to View a PDF File
    • Multiple Workspaces
    • Software Updater
    • Archive Manager
    • How to Burn CD/DVDs
    • Setup & Use Email >
      • Email Filter
    • Firefox Web Browser
    • Shotwell Photo Manager
    • Image Viewer
    • Caja File Manager
    • Trash
    • Play Videos
  • Additional Software
    • Antivirus >
      • BitDefender Antivirus
      • ClamTK Antivirus >
        • Clamscan Antivirus
        • ClamTK Caja Add-on
      • Comodo AntiVirus
    • Archive Managers >
      • Archive Manager
      • Ark
      • B1 Free Archiver
      • P7Zip-Desktop
      • PeaZip
      • Xarchiver
    • Browsers >
      • Brave
      • Chrome
      • Chromium
      • Falkon
      • Firefox
      • GNOME Web
      • Iridium Browser
      • LibreWolf
      • Microsoft Edge
      • Midori
      • Min Browser
      • NAVER Whale
      • Opera
      • Otter
      • Pale Moon
      • SeaMonkey
      • Sidekick
      • Slimjet Browser
      • SRWare Iron
      • Ungoogled Chromium
      • Vivaldi
      • Waterfox
      • Yandex Browser
    • Office Applications >
      • Couturier
      • PDF-Shuffler
      • PDF Studio Viewer
      • Xournal
      • Foxit Reader
      • Okular
      • gLabels >
        • Multiple Name Badges
        • CD & DVD Labels
        • Business Cards
        • Mailing Address Labels
        • Return Address Labels
      • Spice-Up
      • Stickynotes
    • Educational Programs >
      • Galculator
      • GeoGebra Classic
      • GNOME Calculator
      • KCalc
      • NumWorks
      • Pebbles
      • Qalculate!
      • QT-Calculator
      • How To Install R >
        • Install R Commander
        • Install RStudio
      • SpeedCrunch
      • TI-83 Plus
      • TI-84 Plus CE
      • KWordQuiz
      • Granule
    • Graphics >
      • 4K Slideshow Maker
      • Imagination
      • Gnome Screenshot
      • Ksnip
      • Shutter >
        • Shutter 0.94.3
      • PhotoFlare
      • Pinta >
        • Tool Palette >
          • Tool Palette (Cont)
        • File Menu >
          • Screenshot Tool
        • View Menu
        • Edit Menu >
          • Palette
        • Image Menu >
          • Image Size
        • Layers Menu
        • Adjustments Menu
        • Effects Menu >
          • Red Eye Removal
          • Pixelate
        • Add-ins Menu
        • Window Menu
        • Help Menu
        • Restore Layout
        • Pinta 1.7
        • Pinta 2.0.1
      • Bing Wallpapers
      • Variety Wallpaper
      • Converseen
      • Curtail
      • Imagine
      • ​Annotator
      • Aliza MS
      • Brightness Controller
      • Photoprint
      • Peek
    • Image Viewers >
      • Deepin Image Viewer
      • Eye of Gnome
      • Fotoxx
      • Geeqie
      • GPicView
      • gThumb
      • Gwenview
      • Mirage
      • nomacs
      • PhotoQt
      • Phototonic
      • Pix
      • Qimgv
      • qView
      • Ristretto
      • Viewnior 1.6 >
        • Viewnior 1.7
      • XnView MP
      • Xviewer
    • Music Players >
      • Amarok
      • Audacious
      • Clementine
      • DeaDBeeF
      • foobar2000
      • Guayadeque
      • Lollypop
      • Museeks
      • Noise Music Player
      • Pragha
      • Quod Libet
      • Rhythmbox
      • Sayonara
      • Strawberry
      • Violin
    • Networking >
      • Dukto
      • LAN-Share
      • Nitroshare
      • Warpinator
    • Utility Software >
      • BleachBit
      • Stacer
      • Ubuntu Cleaner
      • CPU-G
      • CPU-X
      • Hardinfo
      • I-Nex
      • Caffeine
      • Conky >
        • Widgets & Themes
        • Title Bars
      • deb-get
      • GNOME Split
      • GParted
      • GtkOrphan
      • Ice SSB >
        • MS Office Online
        • Pixlr Editor
        • Photopea
      • KRename
      • KShutdown
      • Magnus
      • Radeon Profile
      • Ubuntu Mainline Kernel Installer
      • Y PPA Manager
    • Sound & Video >
      • Avidemux >
        • Merge Videos
        • Cut Videos
        • Crop Videos
      • Selene
      • Radio Tray >
        • Radio Tray Lite
      • Pithos
      • Spotify
      • Asunder
      • EasyTag
      • SimpleScreenRecorder
      • OBS Studio
      • FF Multi Converter
      • FFmpeg
      • SoundConverter
      • MediaInfo
      • Bomi
      • Gnome MPV
      • MPlayer
      • SMPlayer
      • VLC Media Player
      • HandBrake >
        • Convert A Video
    • Entertainment >
      • Hypnotix
      • IPTVnator
      • Airy TV
      • Crackle
      • Plex Live TV
      • Pluto TV
      • Popcornflix
      • Stirr TV
      • Tubi TV
      • Xumo TV
      • YouTube Movies
      • Plex Media Server
      • Emby Media Server
    • Themes & Colors >
      • Themes
      • Installing Themes
      • Customize Themes #1
      • Customize Themes #2
      • Change App Icons
  • Reviews
    • YouTube Reviews >
      • Ubuntu MATE 16.10
      • Ubuntu Mate 17.04
      • Ubuntu MATE 17.10
      • Ubuntu MATE 18.04
      • Ubuntu MATE 20.04
      • Ubuntu MATE 22.04
  • Info
    • How Safe are Your Paasswords >
      • Cyber Security Leaks
      • Hotmail Leak
      • YaHoo Leak
      • Windstream Hacked
    • Windows 7
    • Wireless USB Adapters
  • About
    • In Memory of ...