diff --git a/src/content/docs/en/reference/configuration-reference.mdx b/src/content/docs/en/reference/configuration-reference.mdx
index 4e30098a4ecb4..ef3a39fd99079 100644
--- a/src/content/docs/en/reference/configuration-reference.mdx
+++ b/src/content/docs/en/reference/configuration-reference.mdx
@@ -978,6 +978,19 @@ Whether to enable the Astro Dev Toolbar. This toolbar allows you to inspect your
 
 This option is scoped to the entire project, to only disable the toolbar for yourself, run `npm run astro preferences disable devToolbar`. To disable the toolbar for all your Astro projects, run `npm run astro preferences disable devToolbar --global`.
 
+### devToolbar.placement
+
+<p>
+
+**Type:** `'bottom-left' | 'bottom-center' | 'bottom-right'`<br />
+**Default:** `'bottom-center'`<br />
+<Since v="5.17.0" />
+</p>
+
+The default placement of the Astro Dev Toolbar on the screen.
+
+The placement of the toolbar can still be changed via the toolbar settings UI. Once changed, the user's preference is saved in `localStorage` and overrides this configuration value.
+
 ## Prefetch Options
 
 <p>
@@ -1110,6 +1123,19 @@ Whether or not to limit the size of images that the Sharp image service will pro
 
 Set `false` to bypass the default image size limit for the Sharp image service and process large images.
 
+#### image.service.config.kernel
+
+<p>
+
+**Type:** `string | undefined`<br />
+**Default:** `undefined`<br />
+<Since v="5.17.0" />
+</p>
+
+The default [kernel used for resizing images](https://sharp.pixelplumbing.com/api-resize/#resize) in the Sharp image service.
+
+By default this is `undefined`, which maps to Sharp's default kernel of `lanczos3`.
+
 ### image.domains
 
 <p>