diff --git a/src/auth/SignInForm.tsx b/src/auth/SignInForm.tsx
index c7f840b4..d30ab0a4 100644
--- a/src/auth/SignInForm.tsx
+++ b/src/auth/SignInForm.tsx
@@ -4,12 +4,15 @@ import FieldSetWithStatus from '@/components/FieldSetWithStatus';
 import InfoBlock from '@/components/InfoBlock';
 import SubmitButtonWithStatus from '@/components/SubmitButtonWithStatus';
 import { useLayoutEffect, useRef, useState } from 'react';
-import { signInAction } from './action';
+import { signInAction } from './actions';
 import { useFormState } from 'react-dom';
 import ErrorNote from '@/components/ErrorNote';
-import { CREDENTIALS_SIGN_IN_ERROR } from '.';
+import { KEY_CALLBACK_URL, KEY_CREDENTIALS_SIGN_IN_ERROR } from '.';
+import { useSearchParams } from 'next/navigation';
 
 export default function SignInForm() {
+  const params = useSearchParams();
+
   const [email, setEmail] = useState('');
   const [password, setPassword] = useState('');
   const [response, action] = useFormState(signInAction, undefined);
@@ -27,7 +30,7 @@ export default function SignInForm() {
     <InfoBlock>
       <form action={action}>
         <div className="space-y-8">
-          {response === CREDENTIALS_SIGN_IN_ERROR &&
+          {response === KEY_CREDENTIALS_SIGN_IN_ERROR &&
             <ErrorNote>
               Invalid email/password
             </ErrorNote>}
@@ -47,6 +50,11 @@ export default function SignInForm() {
               value={password}
               onChange={setPassword}
             />
+            <input
+              type="hidden"
+              name={KEY_CALLBACK_URL}
+              value={params.get(KEY_CALLBACK_URL) ?? ''}
+            />
           </div>
           <SubmitButtonWithStatus disabled={!isFormValid}>
             Sign in
diff --git a/src/auth/action.ts b/src/auth/action.ts
deleted file mode 100644
index c16db0bd..00000000
--- a/src/auth/action.ts
+++ /dev/null
@@ -1,21 +0,0 @@
-'use server';
-
-import { CREDENTIALS_SIGN_IN_ERROR, signIn, signOut } from '@/auth';
-
-export const signInAction = async (
-  _prevState: string | undefined,
-  formData: FormData,
-) => {
-  try {
-    await signIn('credentials', Object.fromEntries(formData));
-  } catch (error) {
-    if ((`${error}`).includes(CREDENTIALS_SIGN_IN_ERROR)) {
-      return CREDENTIALS_SIGN_IN_ERROR;
-    }
-    throw error;
-  }
-};
-
-export const signOutAction = async () => {
-  await signOut();
-};
diff --git a/src/auth/actions.ts b/src/auth/actions.ts
new file mode 100644
index 00000000..cb14b725
--- /dev/null
+++ b/src/auth/actions.ts
@@ -0,0 +1,36 @@
+'use server';
+
+import {
+  KEY_CALLBACK_URL,
+  KEY_CREDENTIALS_SIGN_IN_ERROR,
+  KEY_CREDENTIALS_SIGN_IN_ERROR_URL,
+  signIn,
+  signOut,
+} from '@/auth';
+import { PATH_ADMIN_PHOTOS } from '@/site/paths';
+import { redirect } from 'next/navigation';
+
+export const signInAction = async (
+  _prevState: string | undefined,
+  formData: FormData,
+) => {
+  try {
+    await signIn('credentials', Object.fromEntries(formData));
+  } catch (error) {
+    if (
+      `${error}`.includes(KEY_CREDENTIALS_SIGN_IN_ERROR) || 
+      `${error}`.includes(KEY_CREDENTIALS_SIGN_IN_ERROR_URL)
+    ) {
+      // Rethrow credentials error to display on the sign in page.
+      return KEY_CREDENTIALS_SIGN_IN_ERROR;
+    } else if (!`${error}`.includes('NEXT_REDIRECT')) {
+      // Rethrow non-redirect errors
+      throw error;
+    }
+  }
+  redirect(formData.get(KEY_CALLBACK_URL) as string || PATH_ADMIN_PHOTOS);
+};
+
+export const signOutAction = async () => {
+  await signOut();
+};
diff --git a/src/auth/index.ts b/src/auth/index.ts
index db3cc98d..0bf0d476 100644
--- a/src/auth/index.ts
+++ b/src/auth/index.ts
@@ -2,7 +2,10 @@ import { isPathProtected } from '@/site/paths';
 import NextAuth, { User } from 'next-auth';
 import Credentials from 'next-auth/providers/credentials';
 
-export const CREDENTIALS_SIGN_IN_ERROR = 'CredentialsSignin';
+export const KEY_CREDENTIALS_SIGN_IN_ERROR = 'CredentialsSignin';
+export const KEY_CREDENTIALS_SIGN_IN_ERROR_URL =
+  'https://errors.authjs.dev#credentialssignin';
+export const KEY_CALLBACK_URL = 'callbackUrl';
 
 export const {
   handlers: { GET, POST },
diff --git a/src/site/FooterClient.tsx b/src/site/FooterClient.tsx
index c26e0134..ab114e7c 100644
--- a/src/site/FooterClient.tsx
+++ b/src/site/FooterClient.tsx
@@ -9,7 +9,7 @@ import RepoLink from '../components/RepoLink';
 import { usePathname } from 'next/navigation';
 import { isPathAdmin, isPathSignIn, pathForAdminPhotos } from './paths';
 import SubmitButtonWithStatus from '@/components/SubmitButtonWithStatus';
-import { signOutAction } from '@/auth/action';
+import { signOutAction } from '@/auth/actions';
 import Spinner from '@/components/Spinner';
 import AnimateItems from '@/components/AnimateItems';