diff --git a/prisma/migrations/20250105172446_add_liked_posts/migration.sql b/prisma/migrations/20250105172446_add_liked_posts/migration.sql
new file mode 100644
index 0000000..54cbaeb
--- /dev/null
+++ b/prisma/migrations/20250105172446_add_liked_posts/migration.sql
@@ -0,0 +1,2 @@
+-- AlterTable
+ALTER TABLE "User" ADD COLUMN     "likedPosts" TEXT[];
diff --git a/prisma/schema.prisma b/prisma/schema.prisma
index 55065e2..4b71549 100644
--- a/prisma/schema.prisma
+++ b/prisma/schema.prisma
@@ -17,6 +17,7 @@ model User {
   id              String    @id @default(cuid())
   username        String    @unique
   hashed_password String
+  likedPosts      String[]
   sessions        Session[]
   posts           Post[]
 }
diff --git a/src/app/(public)/page.tsx b/src/app/(public)/page.tsx
index b73bb7d..8b20fbb 100644
--- a/src/app/(public)/page.tsx
+++ b/src/app/(public)/page.tsx
@@ -5,15 +5,25 @@ import Link from 'next/link';
 export default async function Home() {
   const posts = await prisma.post.findMany({ take: 30 });
   return (
-    <div className='text-center pt-2'>
+    <div className="text-center pt-2">
       <h1>This is nextbooru</h1>
       <p>The simplest and most modern booru software.</p>
-      <p className='text-sm text-muted-foreground italic'>(very unstable and not feature complete!)</p>
+      <p className="text-sm text-muted-foreground italic">
+        (very unstable and not feature complete!)
+      </p>
       <div className="flex gap-4 p-4">
         {posts.map((post) => (
           <div key={post.id}>
             <Link href={`/post/${post.id}`}>
-              <Image width={176} height={176} src={post.imageUrl} alt={''} className="aspect-square object-contain border-2 rounded-md border-dashed" />
+              <Image
+                width={176}
+                height={176}
+                src={post.imageUrl}
+                alt={''}
+                className="aspect-square object-contain border-2 rounded-md border-dashed"
+                blurDataURL={`data:image/jpeg;base64,${post.previewHash}`}
+                placeholder="blur"
+              />
             </Link>
           </div>
         ))}
diff --git a/src/app/(public)/post/[id]/page.tsx b/src/app/(public)/post/[id]/page.tsx
index fa86bde..782581e 100644
--- a/src/app/(public)/post/[id]/page.tsx
+++ b/src/app/(public)/post/[id]/page.tsx
@@ -1,12 +1,15 @@
+import LikePost from '@/components/app/LikePost/LikePost';
 import { Badge } from '@/components/ui/badge';
 import { Button } from '@/components/ui/button';
 import { Card, CardContent } from '@/components/ui/card';
 import { Separator } from '@/components/ui/separator';
+import { validateRequest } from '@/lib/auth';
 import prisma from '@/lib/db';
-import { Heart, Download, Flag, MessageSquare, Link, User, Calendar } from 'lucide-react';
+import { Download, Flag, MessageSquare, User, Calendar } from 'lucide-react';
 import Image from 'next/image';
 
 export default async function Page({ params }: { params: Promise<{ id: string }> }) {
+  const { user } = await validateRequest();
   const { id } = await params;
   const post = await prisma.post.findUnique({ where: { id }, include: { author: true } });
   if (!post) {
@@ -31,9 +34,7 @@ export default async function Page({ params }: { params: Promise<{ id: string }>
               </div>
               <div className="p-4 flex justify-between items-center">
                 <div className="flex space-x-2">
-                  <Button variant="outline" size="icon">
-                    <Heart className="h-4 w-4" />
-                  </Button>
+                  <LikePost id={id} liked={user?.likedPosts!.includes(id)!} />
                   <a href={post.imageUrl} download>
                     <Button variant="outline" size="icon">
                       <Download className="h-4 w-4" />
diff --git a/src/components/app/LikePost/LikePost.tsx b/src/components/app/LikePost/LikePost.tsx
new file mode 100644
index 0000000..aef7efc
--- /dev/null
+++ b/src/components/app/LikePost/LikePost.tsx
@@ -0,0 +1,49 @@
+'use client';
+
+import { Button } from '@/components/ui/button';
+import { likePost } from '@/lib/other/actions';
+import { cn } from '@/lib/utils';
+import { Heart } from 'lucide-react';
+import { useState } from 'react';
+import { toast } from 'sonner';
+
+export default function LikePost(props: Props) {
+  const [loading, setLoading] = useState(false); 
+  const [liked, setLiked] = useState(props.liked);
+  return (
+    <Button
+      variant="outline"
+      size="icon"
+      onClick={() => {
+        setLoading(true);
+        likePost(props.id).then((res) => {
+          setLoading(false);
+          if (res.success) {
+            setLiked(res.liked!);
+          } else {
+            switch (res.error) {
+              case 'logIn':
+                // TODO: redirect to login page
+                toast.error('You need to be logged in to like posts');
+                break;
+              case 'notFound':
+                toast.error('Post not found');
+                break;
+              default:
+                toast.error('An error occurred');
+                break;
+            }
+          }
+        });
+      }}
+      disabled={loading}
+    >
+      <Heart className={cn("h-4 w-4", liked ? 'text-red-500' : '')} />
+    </Button>
+  );
+}
+
+interface Props {
+  id: string;
+  liked: boolean;
+}
diff --git a/src/lib/auth/index.ts b/src/lib/auth/index.ts
index e2d0d18..0ff2b4a 100644
--- a/src/lib/auth/index.ts
+++ b/src/lib/auth/index.ts
@@ -1,71 +1,64 @@
-import { PrismaAdapter } from "@lucia-auth/adapter-prisma";
-import { Lucia, Session, User } from "lucia";
-import prisma from "../db";
-import { cache } from "react";
-import { cookies } from "next/headers";
+import { PrismaAdapter } from '@lucia-auth/adapter-prisma';
+import { Lucia } from 'lucia';
+import prisma from '../db';
+import { cache } from 'react';
+import { cookies } from 'next/headers';
 
 const adapter = new PrismaAdapter(prisma.session, prisma.user);
 
 export const lucia = new Lucia(adapter, {
-	sessionCookie: {
-		// this sets cookies with super long expiration
-		// since Next.js doesn't allow Lucia to extend cookie expiration when rendering pages
-		expires: false,
-		attributes: {
-			// set to `true` when using HTTPS
-			secure: process.env.NODE_ENV === "production"
-		}
-	},
-	getUserAttributes: (attributes) => {
-		return {
-			username: attributes.username
-		};
-	}
+  sessionCookie: {
+    // this sets cookies with super long expiration
+    // since Next.js doesn't allow Lucia to extend cookie expiration when rendering pages
+    expires: false,
+    attributes: {
+      // set to `true` when using HTTPS
+      secure: process.env.NODE_ENV === 'production',
+    },
+  },
+  getUserAttributes: (attributes) => {
+    return {
+      username: attributes.username,
+      likedPosts: attributes.likedPosts,
+    };
+  },
 });
 export const validateRequest = cache(async () => {
-	const sessionId = (await cookies()).get(lucia.sessionCookieName)?.value ?? null
-  
-	if (!sessionId)
-	  return {
-		user: null,
-		session: null,
-	  }
-  
-	const { user, session } = await lucia.validateSession(sessionId)
-	try {
-	  if (session && session.fresh) {
-		const sessionCookie = lucia.createSessionCookie(session.id)
-		(await cookies()).set(
-		  sessionCookie.name,
-		  sessionCookie.value,
-		  sessionCookie.attributes
-		)
-	  }
-	  if (!session) {
-		const sessionCookie = lucia.createBlankSessionCookie()
-		(await cookies()).set(
-		  sessionCookie.name,
-		  sessionCookie.value,
-		  sessionCookie.attributes
-		)
-	  }
-	} catch {
-	  // Next.js throws error attempting to set cookies when rendering page
-	}
-	return {
-	  user,
-	  session,
-	}
-  })  
+  const sessionId = (await cookies()).get(lucia.sessionCookieName)?.value ?? null;
 
+  if (!sessionId)
+    return {
+      user: null,
+      session: null,
+    };
 
-declare module "lucia" {
-	interface Register {
-		Lucia: typeof lucia;
-		DatabaseUserAttributes: DatabaseUserAttributes;
-	}
+  const { user, session } = await lucia.validateSession(sessionId);
+  try {
+    if (session && session.fresh) {
+      const sessionCookie = lucia.createSessionCookie(session.id);
+      (await cookies()).set(sessionCookie.name, sessionCookie.value, sessionCookie.attributes);
+    }
+    if (!session) {
+      const sessionCookie = lucia.createBlankSessionCookie();
+      (await cookies()).set(sessionCookie.name, sessionCookie.value, sessionCookie.attributes);
+    }
+  } catch {
+    // Next.js throws error attempting to set cookies when rendering page
+  }
+  return {
+    user,
+    session,
+  };
+});
+
+declare module 'lucia' {
+  interface Register {
+    Lucia: typeof lucia;
+    DatabaseUserAttributes: DatabaseUserAttributes;
+  }
 }
 
 interface DatabaseUserAttributes {
-	username: string;
-}
\ No newline at end of file
+  username: string;
+  likedPosts: string[];
+}
diff --git a/src/lib/hashImage.ts b/src/lib/hashImage.ts
index 4563599..86cc53c 100644
--- a/src/lib/hashImage.ts
+++ b/src/lib/hashImage.ts
@@ -1,5 +1,4 @@
 import sharp from 'sharp';
-import crypto from 'crypto';
 
 export default async function hashImage(imageBuffer: Buffer) {
   try {
diff --git a/src/lib/other/actions.ts b/src/lib/other/actions.ts
new file mode 100644
index 0000000..43f72bd
--- /dev/null
+++ b/src/lib/other/actions.ts
@@ -0,0 +1,50 @@
+'use server'
+
+import { validateRequest } from "../auth"
+import prisma from "../db";
+
+export async function likePost(id: string) {
+  const { user } = await validateRequest();
+  if (!user) {
+    return {
+      success: false,
+      error: 'logIn',
+    }
+  }
+
+  const post = await prisma.post.findUnique({ where: { id } });
+  if (!post) {
+    return {
+      success: false,
+      error: 'notFound',
+    }
+  }
+  const userDb = await prisma.user.findUnique({ where: { id: user.id } });
+  if (userDb?.likedPosts.includes(id)) {
+    await prisma.user.update({
+      where: { id: user.id },
+      data: {
+        likedPosts: {
+          set: userDb.likedPosts.filter((postId) => postId !== id),
+        },
+      },
+    });
+    return {
+      success: true,
+      liked: false,
+    }
+  }
+
+  await prisma.user.update({
+    where: { id: user.id },
+    data: {
+      likedPosts: {
+        push: id,
+      },
+    },
+  });
+  return {
+    success: true,
+    liked: true,
+  }
+}
\ No newline at end of file