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GIMP 2.10.0 and newer have an updated interface. Most annoying is that the GIMP devs are trying to be more like Adobe Photoshop. This is a sad problem with the entire FOSS community trying to be more like the stuff the rest of us want to get away from....GIMP 2.10.0 and newer have an updated interface. Most annoying is that the GIMP devs are trying to be more like Adobe Photoshop. This is a sad problem with the entire FOSS community trying to be more like the stuff the rest of us want to get away from......*'''HOWTO: GET MY BRUSH SIZE TOOLBOX BACK''' --- (''also known as Missing Tool Options Dockable Dialog'') you clicked or tapped something accidentally, or after a crash you no longer have the Tool Options panel which was probably previously located on the lower left size of the screen. Now you can't see how to change the brush size, opacity, hardness or other similar options relative to whichever brush tool you're using. You just want to get that panel back! Easiest way is to double click on the tool you're using, like the brush tool. Then the panel appears over on the upper right of the screen and you can drag it back to dock on the bottom left where it previously was. Another option is to go to Windows -> Dockable Dialogs -> Tool Options. Again, you might have to drag it from the upper right to lower left if you prefer the traditional location; it's picky in that you have to grab it by the little tab and move it to where the little tabs are on the left dock where device status, undo history, etc is probably located.=== Adding Brushes ===You can add additional brushes, which is to say that using the brush tool allows you different shaped brushes. One useful example is the shape of an arrow. The web site https://www.gimphelp.org/ has been around over 20 years and the creator has many free brushes you can download and use. Example: [https://www.gimphelp.org/arrow_brushes_BW_2.htmlArrow Brushes BW 2]After downloading the arrow brushes and extracting them into a directory, you can move them into the place where Gimp will detect them on launch. Make sure you exit Gimp before doing this. mkdir /usr/share/gimp/2.0/brushes/arrows cp ~/arrow_brushes_BW_2/*.gbr /usr/share/gimp/2.0/brushes/arrowsReplace ~/arrow_brushes_BW_2/ with the location of the extracted gbr files.=== Script-Fu GIMP Script ===Another way to create arrows is using the Gimp scripting capabilities. drawing arrow lines is just one example of using script capabilities. In this example we will use [https://www.gimp-forum.net/Thread-Arrow-Script arrow.scm Script-Fu GIMP Script] originally written by B-Ranger.*Exit Gimp. *Copy either arrow.scm or arrow_V3.scm into /usr/share/gimp/2.0/scriptsThe scm file you use depends on your version of Gimp. The arrow_V3.scm should check that you are running V2.99.14 or later. If you are using GIMP V2.10.x you need to use file arrow.scm.To use the arrow script you have to "create paths." If you are not familiar with creating paths start by making sure you select the "Paths Tool" which is different from the Paintbrush tool.# click on the Paths Tool# make sure the Paths Tool is set to "Design" for the paths edit mode# on canvas using Paths Tool you will have to make 3 total clicks! First is where the head of the arrow will appear. Second and Third define the tail direction. For the second and third click if you do them in the same spot then you will have a straight arrow.# On Gimp menu click Tools -> Arrow -> Arrow* The arrow head will appear on the first click point you made in your path!* It is recommended you take some time to get familiar with the Paths Tool.Script '''arrow.scm''' obtained from [https://www.gimp-forum.net/Thread-Arrow-Script Gimp-Forum.net › GIMP › Extending the GIMP › Arrow Script] by ''Berengar W. Lehr'' last revision '''13/10/2022''' is verified to work with '''Gimp version 2.10.30''' on Linux Mint 21.1 and is pretty slick to boot!* Pick a layer or guide - This is the default option under the "Move Tool Options" and should actually be changed to "Move the active layer." This makes more sense when you are trying to position something within the layer you've selected.===Pick a layer or guide=== "Pick a layer or guide" is the default option under the "Move Tool Options" and should actually be changed to "Move the active layer." This makes more sense when you are trying to position something within the layer you've selected.* Antialiasing always selected by default - This is so annoying. There are a number of tools that show this by default. Some are: Ellipse Select Tool, Free Select Tool, Scissors Select Tool, Fuzzy Select Tool, Select by Color Tool, Bucket Fill Tool, and Text Tool. Im sure there are more. The default status needs to be configurable. On newer versions I have success in retaining the preference of having Anti Aliasing unchecked for most of these by going to: ===Assumed Antialiasing Everywhere===Antialiasing always selected by default - This is so annoying. There are a number of tools that show this by default. Some are: Ellipse Select Tool, Free Select Tool, Scissors Select Tool, Fuzzy Select Tool, Select by Color Tool, Bucket Fill Tool, and Text Tool. Im sure there are more. The default status needs to be configurable. On newer versions I have success in retaining the preference of having Anti Aliasing unchecked for most of these by going to: ===Now Necessary to Manually Add Alpha Channel to Layers===* No alpha channel in subsequent layers as a default - Sometimes cutting from layers fills with white - When you cut from a layer above another, the current layer should contain a transparency where content was removed revealing image from underlying layer given that layer visually enabled. Sometimes Gimp does not do this and instead FILLS the cut area with a color or white. This is a change that we first noticed in version 2.10.30. In older versions, when you select and cut a section from a layer that is on top of another, what is in the layer behind it will become visible, which is the expected reasonable behavior. Now, when you cut from the top layer you will see a filled selection of (foreground) color (typically white) which is stupid. You have to manually add an alpha layer before you cut the selection in order to reveal what is underneath. to resolve:* Layer -> Transparency -> Add alpha channel===New Text on New Image is Vertical or Rotated===An annoying nasty little feature of Gimp now is that it will retain any rotation setting you applied to the text tool on last use, even on a new document. So, if three months ago you added rotated text to an image, from now on and on all new images the text tool will default to that rotation unless you change it back and Gimp saves the new setting before it crashes.to Rotate or remove any rotation setting:* Right click within the text box on your image (where your text appears rotated)* select "left-to-right" from the drop down context menu===Error: Couldn't simply reduce colors further. Exporting as opaque.===Even though you have reduced the color depth to 256 prior to trying to save your image as a GIF with a transparent background, it will not succeed. The error indicates Gimp cannot find a a free color slot to create a transparency, which it sees as another color. Resolution: Even though Gif is a 256 color pallet, you must use an index of 255 colors. * Image -> Mode -> Indexed (Maximum number of colors: 255)