diff --git a/.changeset/eleven-mugs-flash.md b/.changeset/eleven-mugs-flash.md
new file mode 100644
index 000000000..e733a9ff0
--- /dev/null
+++ b/.changeset/eleven-mugs-flash.md
@@ -0,0 +1,5 @@
+---
+'@astrojs/image': patch
+---
+
+Handle missing trailing slash in processStaticImage
diff --git a/packages/integrations/image/src/build/ssg.ts b/packages/integrations/image/src/build/ssg.ts
index 076144282..bf0f7460b 100644
--- a/packages/integrations/image/src/build/ssg.ts
+++ b/packages/integrations/image/src/build/ssg.ts
@@ -138,7 +138,7 @@ export async function ssgBuild({
 		// Vite will prefix a hashed image with the base path, we need to strip this
 		// off to find the actual file relative to /dist
 		if (config.base && src.startsWith(config.base)) {
-			src = src.substring(config.base.length - 1);
+			src = src.substring(config.base.length - +config.base.endsWith('/'));
 		}
 
 		if (isRemoteImage(src)) {