diff --git a/INSTALL.in b/INSTALL.in
index ed8f539002..7f251a8abc 100644
--- a/INSTALL.in
+++ b/INSTALL.in
@@ -201,7 +201,7 @@ help in that regard:
      * HEIC: e.g. libde265 and libx265 support (for
              respectively decoding and encoding of HEVC).
      * AVIF: e.g. libaom decoder and encoder (for AV1 encoding and
-             decoding), prefered over rav1e.
+             decoding), preferred over rav1e.
      * HEJ2: OpenJPEG (for JPEG2000 inside HEIF).
 
      If you don't compile libheif with the correct flags (see libheif
@@ -489,5 +489,5 @@ reconfiguration:
   % ninja reconfigure
 
 Verify that the optional features you wanted are now shown as `true`,
-otherwise follow similar advices than above to make sure they are
+otherwise follow similar advice as above to make sure they are
 visible to your setup.
diff --git a/app/actions/filters-actions.c b/app/actions/filters-actions.c
index e0f3e8e6de..dd8b8d0237 100644
--- a/app/actions/filters-actions.c
+++ b/app/actions/filters-actions.c
@@ -824,7 +824,7 @@ filters_actions_setup (GimpActionGroup *group)
            * operations end up generating the same action name. Typically we
            * don't want a third-party operation called "my-op" to have the same
            * action name than "my_op" (which is to say that one will be
-           * overrided by the other).
+           * overridden by the other).
            */
           g_free (action_name);
           action_name = g_strdup_printf ("filters-%s-%d", formatted_op_name, i++);
diff --git a/app/actions/layers-commands.c b/app/actions/layers-commands.c
index 01c98ec26e..ad78ff059b 100644
--- a/app/actions/layers-commands.c
+++ b/app/actions/layers-commands.c
@@ -1764,7 +1764,7 @@ layers_mask_show_cmd_callback (GimpAction *action,
             {
               /* if switching "show mask" on, and any selected layer's
                * mask is already visible, bail out because that's
-               * exactly the logic we use in the ui for multile
+               * exactly the logic we use in the ui for multiple
                * visible layer masks.
                */
               return;
@@ -1815,7 +1815,7 @@ layers_mask_disable_cmd_callback (GimpAction *action,
             {
               /* if switching "disable mask" on, and any selected
                * layer's mask is already disabled, bail out because
-               * that's exactly the logic we use in the ui for multile
+               * that's exactly the logic we use in the ui for multiple
                * disabled layer masks.
                */
               return;
diff --git a/app/core/gimp-transform-resize.c b/app/core/gimp-transform-resize.c
index 896b214e8b..85f5b96b7c 100644
--- a/app/core/gimp-transform-resize.c
+++ b/app/core/gimp-transform-resize.c
@@ -353,7 +353,7 @@ gimp_transform_resize_crop (const GimpVector2 *orig_points,
 
   if (r.area == 0)
     {
-      /* saveguard if something went wrong, adjust and give warning */
+      /* safeguard if something went wrong, adjust and give warning */
       gimp_transform_resize_adjust (orig_points, n_points,
                                     x1, y1, x2, y2);
       g_printerr ("no rectangle found by algorithm, no cropping done\n");
diff --git a/app/core/gimp-utils.c b/app/core/gimp-utils.c
index 9109976827..ac9f9959e6 100644
--- a/app/core/gimp-utils.c
+++ b/app/core/gimp-utils.c
@@ -605,7 +605,7 @@ gimp_get_fill_params (GimpContext   *context,
  * @start_y:
  * @end_x:
  * @end_y:
- * @n_snap_lines: Number evenly disributed lines to snap to.
+ * @n_snap_lines: Number evenly distributed lines to snap to.
  * @offset_angle: The angle by which to offset the lines, in degrees.
  * @xres:         The horizontal resolution.
  * @yres:         The vertical resolution.
diff --git a/app/core/gimpbrushpipe.c b/app/core/gimpbrushpipe.c
index 5ed3bbf36c..57530a73da 100644
--- a/app/core/gimpbrushpipe.c
+++ b/app/core/gimpbrushpipe.c
@@ -271,7 +271,7 @@ gimp_brush_pipe_select_brush (GimpBrush        *brush,
           break;
 
         case PIPE_SELECT_ANGULAR:
-          /* Coords angle is already nomalized,
+          /* Coords angle is already normalized,
            * offset by 90 degrees is still needed
            * because hoses were made PS compatible*/
           ix = (gint) RINT ((1.0 - current_coords->direction + 0.25) * pipe->rank[i]) % pipe->rank[i];
diff --git a/app/core/gimpidtable.c b/app/core/gimpidtable.c
index 2307ad50cf..6b4fef7f43 100644
--- a/app/core/gimpidtable.c
+++ b/app/core/gimpidtable.c
@@ -152,7 +152,7 @@ gimp_id_table_insert (GimpIdTable *id_table, gpointer data)
  * @data: The data to associate with the id
  *
  * Insert data in the id table with a specific ID. If data already
- * exsts with the given ID, this function fails.
+ * exists with the given ID, this function fails.
  *
  * Returns: The used ID if successful, -1 if it was already in use.
  **/
diff --git a/app/core/gimpimage.c b/app/core/gimpimage.c
index a1bb97c0ef..1a556c8e36 100644
--- a/app/core/gimpimage.c
+++ b/app/core/gimpimage.c
@@ -3012,7 +3012,7 @@ gimp_image_get_xcf_version (GimpImage    *image,
           /* The blending space variant corresponding to SPACE_RGB_PERCEPTUAL in <3.0
            * corresponds to R'G'B'A which is NON_LINEAR in babl. Perceptual in babl is
            * R~G~B~A, >= 3.0 the code, comments and usage matches the existing enum value
-           * as being NON_LINEAR and new layers created use the new interger value for
+           * as being NON_LINEAR and new layers created use the new integer value for
            * PERCEPTUAL.
            */
           version = MAX (23, version);
@@ -3166,7 +3166,7 @@ gimp_image_get_xcf_version (GimpImage    *image,
 
   /* Note: user unit storage was changed in XCF 21, but we can still
    * easily save older XCF (we use the unit name for both singular and
-   * plural forms). Therefore we don't bump the XCF version unecessarily
+   * plural forms). Therefore we don't bump the XCF version unnecessarily
    * and don't add any test.
    */
 
diff --git a/app/dialogs/welcome-dialog.c b/app/dialogs/welcome-dialog.c
index 1386c4f37f..cb11b18253 100644
--- a/app/dialogs/welcome-dialog.c
+++ b/app/dialogs/welcome-dialog.c
@@ -1382,7 +1382,7 @@ welcome_dialog_release_item_activated (GtkListBox    *listbox,
     {
       GList *windows = gimp_get_image_windows (gimp);
 
-      /* Losing forcus on the welcome dialog on purpose for the main GUI
+      /* Losing focus on the welcome dialog on purpose for the main GUI
        * to be more readable.
        */
       if (windows)
diff --git a/app/display/gimpdisplayshell-scale.c b/app/display/gimpdisplayshell-scale.c
index 4f23115188..6327b7f1ec 100644
--- a/app/display/gimpdisplayshell-scale.c
+++ b/app/display/gimpdisplayshell-scale.c
@@ -246,7 +246,7 @@ gimp_display_shell_scale_get_image_size (GimpDisplayShell *shell,
  * @w:
  * @h:
  *
- * Gets the screen-space boudning box of the image, after it has
+ * Gets the screen-space bounding box of the image, after it has
  * been transformed (i.e., scaled, rotated, and scrolled).
  **/
 void
@@ -290,7 +290,7 @@ gimp_display_shell_scale_get_image_bounds (GimpDisplayShell *shell,
  * @w:
  * @h:
  *
- * Gets the screen-space boudning box of the image, after it has
+ * Gets the screen-space bounding box of the image, after it has
  * been scaled and scrolled, but before it has been rotated.
  **/
 void
@@ -320,7 +320,7 @@ gimp_display_shell_scale_get_image_unrotated_bounds (GimpDisplayShell *shell,
  * @w:
  * @h:
  *
- * Gets the screen-space boudning box of the image content, after it has
+ * Gets the screen-space bounding box of the image content, after it has
  * been transformed (i.e., scaled, rotated, and scrolled).
  **/
 void
@@ -375,7 +375,7 @@ gimp_display_shell_scale_get_image_bounding_box (GimpDisplayShell *shell,
  * @w:
  * @h:
  *
- * Gets the screen-space boudning box of the image content, after it has
+ * Gets the screen-space bounding box of the image content, after it has
  * been scaled and scrolled, but before it has been rotated.
  **/
 void
diff --git a/app/display/gimpimagewindow.c b/app/display/gimpimagewindow.c
index e271826994..07eabd803b 100644
--- a/app/display/gimpimagewindow.c
+++ b/app/display/gimpimagewindow.c
@@ -706,7 +706,7 @@ gimp_image_window_configure_event (GtkWidget         *widget,
   if (GTK_WIDGET_CLASS (parent_class)->configure_event)
     GTK_WIDGET_CLASS (parent_class)->configure_event (widget, event);
 
-  /* If the window size has changed, make sure additoinal logic is run
+  /* If the window size has changed, make sure additional logic is run
    * in the display shell's size-allocate
    */
   if (event->width  != current_width ||
diff --git a/app/display/gimptoolpolygon.c b/app/display/gimptoolpolygon.c
index ae5295b7c9..1d95342956 100644
--- a/app/display/gimptoolpolygon.c
+++ b/app/display/gimptoolpolygon.c
@@ -558,7 +558,7 @@ gimp_tool_polygon_fit_segment (GimpToolPolygon   *polygon,
 
     dest_end = &dest_points[n_points - 1];
 
-    /* Transate to origin */
+    /* Translate to origin */
     gimp_vector2_sub (&origo_translation_offset,
                       &vector2_zero,
                       &dest_points[0]);
diff --git a/app/gui/icon-themes.c b/app/gui/icon-themes.c
index 224f8fb3fb..e2a783cdec 100644
--- a/app/gui/icon-themes.c
+++ b/app/gui/icon-themes.c
@@ -220,7 +220,7 @@ icon_themes_current_prefer_symbolic (Gimp *gimp)
    * override the "prefer-symbolic-icons" property, not only to avoid
    * discrepancies, but even more to avoid weird cases where we end up using
    * icons from the system icon theme while the chosen theme has the right icon
-   * (yet simply not in the prefered style). See Issue #9410.
+   * (yet simply not in the preferred style). See Issue #9410.
    */
   if (gtk_icon_theme_has_icon (icon_theme, GIMP_ICON_WILBER) &&
       ! gtk_icon_theme_has_icon (icon_theme, GIMP_ICON_WILBER "-symbolic"))
diff --git a/app/language.c b/app/language.c
index c14fdf0f40..2d3cafed11 100644
--- a/app/language.c
+++ b/app/language.c
@@ -805,7 +805,7 @@ language_get_system_lang_id (void)
 #elif defined PLATFORM_OSX
   NSString *langs;
 
-  /* In macOS, the user sets a list of prefered languages and the
+  /* In macOS, the user sets a list of preferred languages and the
    * software respects this preference order. I.e. that just storing the
    * top-prefered lang would not be enough. What if GIMP didn't have
    * translations for it, then it would fallback to the second lang. If
diff --git a/app/main.c b/app/main.c
index 7ce100ef0c..00625dd9b0 100644
--- a/app/main.c
+++ b/app/main.c
@@ -1,4 +1,4 @@
-/* GIMP - The GNU Image Manipulation Program
+/* GIMP - The GNU Image Manipulation Program
  * Copyright (C) 1995 Spencer Kimball and Peter Mattis
  *
  * This program is free software: you can redistribute it and/or modify
@@ -475,7 +475,7 @@ gimp_early_configuration (void)
   if (user_gimprc)
     user_gimprc_file = g_file_new_for_commandline_arg (user_gimprc);
 
-  /* GimpEarlyRc is reponsible for reading "gimprc" files for the
+  /* GimpEarlyRc is responsible for reading "gimprc" files for the
    * sole purpose of getting some configuration data that is needed
    * in the early initialization phase
    */
@@ -761,10 +761,10 @@ main (int    argc,
 
   /* The GIMP option group is just an empty option group, created for
    * the sole purpose of running a post-parse hook before any other of
-   * dependant libraries are run. This makes it possible to apply
+   * dependent libraries are run. This makes it possible to apply
    * options from configuration data obtained from "gimprc" files,
    * before other libraries have a chance to run some of their
-   * intialization code.
+   * initialization code.
    */
   gimp_group = g_option_group_new ("gimp", "", "", NULL, NULL);
   g_option_group_set_parse_hooks (gimp_group, NULL,
diff --git a/app/tests/test-tools.c b/app/tests/test-tools.c
index aacfbf6bed..1eeb794415 100644
--- a/app/tests/test-tools.c
+++ b/app/tests/test-tools.c
@@ -398,7 +398,7 @@ crop_tool_can_crop (GimpTestFixture *fixture,
   gint cropped_w = 20;
   gint cropped_h = 30;
 
-  /* Fit display and pause and let it stabalize (two idlings seems to
+  /* Fit display and pause and let it stabilize (two idlings seems to
    * always be enough)
    */
   gimp_ui_manager_activate_action (gimp_test_utils_get_ui_manager (gimp),
diff --git a/app/widgets/gimpdashboard.c b/app/widgets/gimpdashboard.c
index fdb955633a..2837a2c3fd 100644
--- a/app/widgets/gimpdashboard.c
+++ b/app/widgets/gimpdashboard.c
@@ -3319,7 +3319,7 @@ gimp_dashboard_field_to_string (GimpDashboard *dashboard,
   const FieldInfo      *field_info    = &group_info->fields[field];
   const VariableInfo   *variable_info = &variables[field_info->variable];
   const VariableData   *variable_data = &priv->variables[field_info->variable];
-  /* Tranlators: "N/A" is an abbreviation for "not available" */
+  /* Translators: "N/A" is an abbreviation for "not available" */
   const gchar          *str           = C_("dashboard-value", "N/A");
   gboolean              static_str    = TRUE;
   gboolean              show_limit    = TRUE;
diff --git a/app/widgets/gimpgradienteditor.c b/app/widgets/gimpgradienteditor.c
index c59afab04b..b67a2562e2 100644
--- a/app/widgets/gimpgradienteditor.c
+++ b/app/widgets/gimpgradienteditor.c
@@ -2011,7 +2011,7 @@ control_compress_left (GimpGradient        *gradient,
       range_l = range_r = drag_seg;
     }
 
-  /* Calculate left bound for dragged hadle */
+  /* Calculate left bound for dragged handle */
 
   if (drag_seg == range_l)
     lbound = range_l->prev->left + 2.0 * EPSILON;
diff --git a/app/widgets/gimpitemtreeview.c b/app/widgets/gimpitemtreeview.c
index b52d312d05..ecac03469c 100644
--- a/app/widgets/gimpitemtreeview.c
+++ b/app/widgets/gimpitemtreeview.c
@@ -2245,7 +2245,7 @@ gimp_item_tree_view_popover_button_press (GtkWidget        *widget,
 
           /* Also immediately pass a release event at same position.
            * Without this, we get weird pointer as though a quick drag'n
-           * drop occured.
+           * drop occurred.
            */
           new_event->type = GDK_BUTTON_RELEASE;
           gtk_main_do_event (new_event);
diff --git a/app/widgets/gimpshortcutbutton.c b/app/widgets/gimpshortcutbutton.c
index 2e5ce8c18d..fcc33311eb 100644
--- a/app/widgets/gimpshortcutbutton.c
+++ b/app/widgets/gimpshortcutbutton.c
@@ -386,7 +386,7 @@ gimp_shortcut_button_focus_out_event (GimpShortcutButton* button,
                                       gpointer            user_data)
 {
   /* On losing focus, we untoggle, so we don't have to grab anything.
-   * Let's avoid cases with several shortcut buttons all grabing the
+   * Let's avoid cases with several shortcut buttons all grabbing the
    * same shortcuts for instance.
    */
   if (button->priv->timer != 0)
diff --git a/libgimp/gimpfileprocedure.c b/libgimp/gimpfileprocedure.c
index 12cb2918a6..9da47d8fa7 100644
--- a/libgimp/gimpfileprocedure.c
+++ b/libgimp/gimpfileprocedure.c
@@ -28,7 +28,7 @@
  * GimpFileProcedure:
  *
  * File procedures implement file support. They cannot be created directly.
- * Instead, you will create an instance of one of the sublasses (such as export
+ * Instead, you will create an instance of one of the subclasses (such as export
  * or load procedures). This provides a common interface for file-related
  * functions on these objects.
  **/
diff --git a/libgimp/gimpresource.c b/libgimp/gimpresource.c
index 78ab6fee09..064af208ad 100644
--- a/libgimp/gimpresource.c
+++ b/libgimp/gimpresource.c
@@ -36,9 +36,9 @@
  * The GimpContext holds a user's current choice of resources.
  * The GIMP core has the *resource* data.
  *
- * A resource has-a identifier.
+ * A resource has an identifier.
  * Currently the identifier is a string, sometimes called a name.
- * The identifier is unique among instances(resource datas) loaded into GIMP.
+ * The identifier is unique among instances (resource data) loaded into GIMP.
  *
  * A user can change the set of resources installed with GIMP,
  * and edit or create new resources meaning datasets.
diff --git a/libgimp/gimpvectorloadprocedure.c b/libgimp/gimpvectorloadprocedure.c
index 87c9c6a4ba..f54c8234f6 100644
--- a/libgimp/gimpvectorloadprocedure.c
+++ b/libgimp/gimpvectorloadprocedure.c
@@ -414,7 +414,7 @@ gimp_vector_load_procedure_run (GimpProcedure        *procedure,
                     "pixel-density", resolution,
                     NULL);
       /* In future, when we'll have vector layers, a vector load proc should be
-       * able to advertize when it can return a vector layer, and when so, we
+       * able to advertise when it can return a vector layer, and when so, we
        * can even bypass the dialog (by running non-interactively) and just use
        * the defaults, unless it's all bogus.
        */
diff --git a/libgimpbase/gimpunit.c b/libgimpbase/gimpunit.c
index 71adc37aa8..97fbc96028 100644
--- a/libgimpbase/gimpunit.c
+++ b/libgimpbase/gimpunit.c
@@ -874,7 +874,7 @@ gimp_pixels_to_units (gdouble   pixels,
  * gimp_units_to_pixels:
  * @value:      value in units
  * @unit:       unit of @value
- * @resolution: resloution in DPI
+ * @resolution: resolution in DPI
  *
  * Converts a @value specified in @unit to pixels.
  *
@@ -899,7 +899,7 @@ gimp_units_to_pixels (gdouble   value,
  * gimp_units_to_points:
  * @value:      value in units
  * @unit:       unit of @value
- * @resolution: resloution in DPI
+ * @resolution: resolution in DPI
  *
  * Converts a @value specified in @unit to points.
  *
diff --git a/libgimpmodule/gimpmodule.h b/libgimpmodule/gimpmodule.h
index 2233ef4360..fc480d161e 100644
--- a/libgimpmodule/gimpmodule.h
+++ b/libgimpmodule/gimpmodule.h
@@ -141,7 +141,7 @@ typedef const GimpModuleInfo * (* GimpModuleQueryFunc)    (GTypeModule *module);
  * When this function is called, the module should register all the types
  * it implements with the passed @module.
  *
- * Returns: Whether the registration was succesfull
+ * Returns: Whether the registration was successful
  **/
 typedef gboolean               (* GimpModuleRegisterFunc) (GTypeModule *module);
 
diff --git a/pdb/README_NEW_PDB_PROC b/pdb/README_NEW_PDB_PROC
index d04c8ae0f9..6537b868b0 100644
--- a/pdb/README_NEW_PDB_PROC
+++ b/pdb/README_NEW_PDB_PROC
@@ -407,7 +407,7 @@ we added a limitation on the range of the parameter. The lower
 limitation is a simple number, and the upper limitation is a constant
 macro (+GIMP_MAX_IMAGE_SIZE+) defined in
 https://gitlab.gnome.org/GNOME/gimp/tree/master/libgimpbase/gimplimits.h[libgimpbase/gimplimits.h].
-In order to make sure this constand will indeed be defined when parsing
+In order to make sure this constant will indeed be defined when parsing
 this function, the file
 https://gitlab.gnome.org/GNOME/gimp/tree/master/libgimpbase/gimpbase.h[libgimpbase/gimpbase.h]
 (which includes
diff --git a/po-plug-ins/meson.build b/po-plug-ins/meson.build
index 1f12c0f781..6704be9c71 100644
--- a/po-plug-ins/meson.build
+++ b/po-plug-ins/meson.build
@@ -1,7 +1,7 @@
 po_plug_ins_dir = meson.current_source_dir()
 i18n.gettext(gettext_package + '-std-plug-ins', preset: 'glib')
 
-# Special-casing, we just reuse the same locale dictionnary for our demo
+# Special-casing, we just reuse the same locale dictionary for our demo
 # extension. We could have separated the strings but just for the sake
 # of demo on code-side, it's simpler to do it this way.
 extension_i18n = 'org.gimp.extension.goat-exercises'
diff --git a/themes/Default/gimp-gray.css b/themes/Default/gimp-gray.css
index f70d65b987..5544c9193b 100644
--- a/themes/Default/gimp-gray.css
+++ b/themes/Default/gimp-gray.css
@@ -33,23 +33,23 @@
 
 /* Background color for hovered items to "stick out". */
 @define-color hover-color            #bbbbbb;
-/* Background color when we want widgets-in-widgets to differenciate. It
+/* Background color when we want widgets-in-widgets to differentiate. It
  * will usually be "less extreme", i.e. darker on a light theme, or
  * lighter on a dark theme.
  */
 @define-color widget-bg-color        rgb(100,100,100);
 /* Color for selected items, in particular when their usual background
- * color is @widget-bg-color or @bg-color. It will usually be ligher on
+ * color is @widget-bg-color or @bg-color. It will usually be lighter on
  * a light theme, or darker on a dark theme.
  */
 @define-color selected-color         #898989;
 
 /* Background color more extreme in the theme tendency, i.e. darker on a
- * dark theme, ligther on a light theme. */
+ * dark theme, lighter on a light theme. */
 @define-color extreme-bg-color       #898989;
 /* Color for a selected item to "stick out" when @extreme-bg-color is
  * used. It will usually be darker than @bg-color on a light theme,
- * ligher on a dark theme.
+ * lighter on a dark theme.
  */
 @define-color extreme-selected-color #656565;
 
diff --git a/themes/Default/gimp-light.css b/themes/Default/gimp-light.css
index 71d07d4c60..c091e5de88 100644
--- a/themes/Default/gimp-light.css
+++ b/themes/Default/gimp-light.css
@@ -26,23 +26,23 @@
 
 /* Background color for hovered items to "stick out". */
 @define-color hover-color            rgb(250,250,250);
-/* Background color when we want widgets-in-widgets to differenciate. It
+/* Background color when we want widgets-in-widgets to differentiate. It
  * will usually be "less extreme", i.e. darker on a light theme, or
  * lighter on a dark theme.
  */
 @define-color widget-bg-color        rgb(220,220,220);
 /* Color for selected items, in particular when their usual background
- * color is @widget-bg-color or @bg-color. It will usually be ligher on
+ * color is @widget-bg-color or @bg-color. It will usually be lighter on
  * a light theme, or darker on a dark theme.
  */
 @define-color selected-color         rgb(250,250,250);
 
 /* Background color more extreme in the theme tendency, i.e. darker on a
- * dark theme, ligther on a light theme. */
+ * dark theme, lighter on a light theme. */
 @define-color extreme-bg-color       rgb(250,250,250);
 /* Color for a selected item to "stick out" when @extreme-bg-color is
  * used. It will usually be darker than @bg-color on a light theme,
- * ligher on a dark theme.
+ * lighter on a dark theme.
  */
 @define-color extreme-selected-color rgb(220,220,220);