diff --git a/apps/dm_new/app/(with-layout)/intro/greywater/page.tsx b/apps/dm_new/app/(with-layout)/intro/greywater/page.tsx
index 54f4ef682..fec020ece 100644
--- a/apps/dm_new/app/(with-layout)/intro/greywater/page.tsx
+++ b/apps/dm_new/app/(with-layout)/intro/greywater/page.tsx
@@ -1,7 +1,11 @@
 // apps/dm/app/(landing)/reuse/intro/greywater/page.tsx
 "use client";
 
+import Image, { type StaticImageData } from "next/image";
 import SubPageHeader from "@/components/SubPageHeader";
+import greywaterIntro from "@/public/images/landing/intro/greywater_intro.png";
+import greywaterMandatory from "@/public/images/landing/intro/greywater_mandatory.png";
+import greywaterStandard from "@/public/images/landing/intro/greywater_standard.png";
 
 function SectionTitle({ children }: { children: React.ReactNode }) {
   return (
@@ -21,17 +25,18 @@ function Hr({ className = "" }: HrProps) {
 }
 
 type ImgCardProps = {
-  src: string;
+  src: StaticImageData;
   alt: string;
 };
 
 function ImgCard({ src, alt }: ImgCardProps) {
   return (
     <div className="w-full overflow-x-auto">
-      <img
+      <Image
         src={src}
         alt={alt}
         className="block mx-auto max-w-none"
+        style={{ width: "auto", height: "auto" }}
       />
     </div>
   );
@@ -58,7 +63,7 @@ export default function GreywaterPage() {
       <section className="mt-6">
         <SectionTitle>중수 재이용 소개</SectionTitle>
         <div className="mt-8">
-          <ImgCard src="/images/landing/intro/greywater_intro.png" alt="중수 재이용 소개" />
+          <ImgCard src={greywaterIntro} alt="중수 재이용 소개" />
         </div>
       </section>
 
@@ -68,7 +73,7 @@ export default function GreywaterPage() {
       <section>
         <SectionTitle>중수도 설치 의무 대상</SectionTitle>
         <div className="mt-8">
-          <ImgCard src="/images/landing/intro/greywater_mandatory.png" alt="중수도 설치 의무 대상 설명" />
+          <ImgCard src={greywaterMandatory} alt="중수도 설치 의무 대상 설명" />
         </div>
       </section>
 
@@ -78,7 +83,7 @@ export default function GreywaterPage() {
       <section className="pb-[200px]">
         <SectionTitle>중수도 시설기준 및 관리기준</SectionTitle>
         <div className="mt-8">
-          <ImgCard src="/images/landing/intro/greywater_standard.png" alt="중수도 시설기준 및 관리기준 설명" />
+          <ImgCard src={greywaterStandard} alt="중수도 시설기준 및 관리기준 설명" />
         </div>
       </section>
     </div>
diff --git a/apps/dm_new/app/(with-layout)/intro/law/page.tsx b/apps/dm_new/app/(with-layout)/intro/law/page.tsx
index 32728806b..0d903a32a 100644
--- a/apps/dm_new/app/(with-layout)/intro/law/page.tsx
+++ b/apps/dm_new/app/(with-layout)/intro/law/page.tsx
@@ -1,7 +1,14 @@
 // apps/dm/app/(landing)/reuse/intro/law/page.tsx
 "use client";
 
+import Image, { type StaticImageData } from "next/image";
 import SubPageHeader from "@/components/SubPageHeader";
+import lawTimeline from "@/public/images/landing/intro/law_timeline.png";
+import performanceLeft from "@/public/images/landing/intro/performance_left.png";
+import domesticTextbox from "@/public/images/landing/intro/domestic_textbox.png";
+import policyTimeline from "@/public/images/landing/intro/policy_timeline.png";
+import relNote from "@/public/images/landing/intro/rel_note.png";
+import linkage from "@/public/images/landing/intro/linkage.png";
 
 function SectionTitle({ children }: { children: React.ReactNode }) {
   return (
@@ -21,17 +28,18 @@ function Hr({ className = "" }: HrProps) {
 }
 
 type ImgCardProps = {
-  src: string;
+  src: StaticImageData;
   alt: string;
 };
 
 function ImgCard({ src, alt }: ImgCardProps) {
   return (
     <div className="w-full overflow-x-auto">
-      <img
+      <Image
         src={src}
         alt={alt}
         className="block mx-auto max-w-none"
+        style={{ width: "auto", height: "auto" }}
       />
     </div>
   );
@@ -58,7 +66,7 @@ export default function WaterReuseLawPage() {
       <section className="mt-6">
         <SectionTitle>법제도 · 계획 및 기본계획 수립</SectionTitle>
         <div className="mt-8">
-          <ImgCard src="/images/landing/intro/law_timeline.png" alt="법제도 타임라인" />
+          <ImgCard src={lawTimeline} alt="법제도 타임라인" />
         </div>
       </section>
 
@@ -68,7 +76,7 @@ export default function WaterReuseLawPage() {
       <section>
         <SectionTitle>제 2차 계획 대비 실적 현황</SectionTitle>
         <div className="mt-8">
-          <ImgCard src="/images/landing/intro/performance_left.png" alt="실적 현황 요약" />
+          <ImgCard src={performanceLeft} alt="실적 현황 요약" />
         </div>
       </section>
 
@@ -78,7 +86,7 @@ export default function WaterReuseLawPage() {
       <section>
         <SectionTitle>국내 관련 현황</SectionTitle>
         <div className="mt-8">
-          <ImgCard src="/images/landing/intro/domestic_textbox.png" alt="국내 관련 현황 설명" />
+          <ImgCard src={domesticTextbox} alt="국내 관련 현황 설명" />
         </div>
       </section>
 
@@ -88,7 +96,7 @@ export default function WaterReuseLawPage() {
       <section>
         <SectionTitle>물 재이용 정책 변천 추이</SectionTitle>
         <div className="mt-8">
-          <ImgCard src="/images/landing/intro/policy_timeline.png" alt="정책 변천 타임라인" />
+          <ImgCard src={policyTimeline} alt="정책 변천 타임라인" />
         </div>
       </section>
 
@@ -98,7 +106,7 @@ export default function WaterReuseLawPage() {
       <section>
         <SectionTitle>타법령과의 관계도</SectionTitle>
         <div className="mt-8">
-          <ImgCard src="/images/landing/intro/rel_note.png" alt="관계도 설명" />
+          <ImgCard src={relNote} alt="관계도 설명" />
         </div>
       </section>
 
@@ -114,7 +122,7 @@ export default function WaterReuseLawPage() {
                 • 물관리 계획(국가수도기본계획, 국가 및 유역하수도종합계획, 하천유역수자원관리계획 등)과의 연계성 확보 → 통합적인 관점에서 물이용 체계 구축 필요
             </p>
           </div>
-          <ImgCard src="/images/landing/intro/linkage.png" alt="국내 연계 현황" />
+          <ImgCard src={linkage} alt="국내 연계 현황" />
         </div>
       </section>
     </div>
diff --git a/apps/dm_new/app/(with-layout)/intro/rain/page.tsx b/apps/dm_new/app/(with-layout)/intro/rain/page.tsx
index 0fc3b1de9..3f88d7f58 100644
--- a/apps/dm_new/app/(with-layout)/intro/rain/page.tsx
+++ b/apps/dm_new/app/(with-layout)/intro/rain/page.tsx
@@ -1,7 +1,12 @@
 // apps/dm/app/(landing)/reuse/intro/law/page.tsx
 "use client";
 
+import Image, { type StaticImageData } from "next/image";
 import SubPageHeader from "@/components/SubPageHeader";
+import rainreuseIntro from "@/public/images/landing/intro/rainreuse_intro.png";
+import rainreuseMandatory from "@/public/images/landing/intro/rainreuse_mandatory.png";
+import rainwaterDesign from "@/public/images/landing/intro/rainwater_design.png";
+import rainwaterStandards from "@/public/images/landing/intro/rainwater_standards.png";
 
 function SectionTitle({ children }: { children: React.ReactNode }) {
   return (
@@ -21,17 +26,18 @@ function Hr({ className = "" }: HrProps) {
 }
 
 type ImgCardProps = {
-  src: string;
+  src: StaticImageData;
   alt: string;
 };
 
 function ImgCard({ src, alt }: ImgCardProps) {
   return (
     <div className="w-full overflow-x-auto">
-      <img
+      <Image
         src={src}
         alt={alt}
         className="block mx-auto max-w-none"
+        style={{ width: "auto", height: "auto" }}
       />
     </div>
   );
@@ -58,7 +64,7 @@ export default function RainwaterReusePage() {
       <section className="mt-6">
         <SectionTitle>빗물 재이용 소개</SectionTitle>
         <div className="mt-8">
-          <ImgCard src="/images/landing/intro/rainreuse_intro.png" alt="빗물 재이용 소개" />
+          <ImgCard src={rainreuseIntro} alt="빗물 재이용 소개" />
         </div>
       </section>
 
@@ -68,7 +74,7 @@ export default function RainwaterReusePage() {
       <section className="mt-6">
         <SectionTitle>빗물이용시설 설치 관리 법적 의무 대상</SectionTitle>
         <div className="mt-8">
-          <ImgCard src="/images/landing/intro/rainreuse_mandatory.png" alt="법적 의무 대상 설명" />
+          <ImgCard src={rainreuseMandatory} alt="법적 의무 대상 설명" />
         </div>
       </section>
 
@@ -78,7 +84,7 @@ export default function RainwaterReusePage() {
       <section className="mt-6">
         <SectionTitle>빗물이용시설 설계 방안</SectionTitle>
         <div className="mt-8">
-          <ImgCard src="/images/landing/intro/rainwater_design.png" alt="빗물이용시설 설계 방안 설명" />
+          <ImgCard src={rainwaterDesign} alt="빗물이용시설 설계 방안 설명" />
         </div>
       </section>
 
@@ -88,7 +94,7 @@ export default function RainwaterReusePage() {
       <section className="pb-[200px]">
         <SectionTitle>빗물이용시설 시설기준 및 관리기준</SectionTitle>
         <div className="mt-8">
-          <ImgCard src="/images/landing/intro/rainwater_standards.png" alt="빗물이용시설 시설기준 및 관리기준 설명" />
+          <ImgCard src={rainwaterStandards} alt="빗물이용시설 시설기준 및 관리기준 설명" />
         </div>
       </section>
     </div>
diff --git a/apps/dm_new/app/(with-layout)/intro/sewage/page.tsx b/apps/dm_new/app/(with-layout)/intro/sewage/page.tsx
index c6e355ed9..526fd4e9c 100644
--- a/apps/dm_new/app/(with-layout)/intro/sewage/page.tsx
+++ b/apps/dm_new/app/(with-layout)/intro/sewage/page.tsx
@@ -1,7 +1,10 @@
 // apps/dm/app/(landing)/reuse/intro/treated/page.tsx
 "use client";
 
+import Image, { type StaticImageData } from "next/image";
 import SubPageHeader from "@/components/SubPageHeader";
+import treatedwaterIntro from "@/public/images/landing/intro/treatedwater_intro.png";
+import treatedwaterMandatory from "@/public/images/landing/intro/treatedwater_mandatory.png";
 
 function SectionTitle({ children }: { children: React.ReactNode }) {
   return (
@@ -21,17 +24,18 @@ function Hr({ className = "" }: HrProps) {
 }
 
 type ImgCardProps = {
-  src: string;
+  src: StaticImageData;
   alt: string;
 };
 
 function ImgCard({ src, alt }: ImgCardProps) {
   return (
     <div className="w-full overflow-x-auto">
-      <img
+      <Image
         src={src}
         alt={alt}
         className="block mx-auto max-w-none"
+        style={{ width: "auto", height: "auto" }}
       />
     </div>
   );
@@ -58,7 +62,7 @@ export default function TreatedWaterPage() {
       <section className="mt-6">
         <SectionTitle>하수처리수</SectionTitle>
         <div className="mt-8">
-          <ImgCard src="/images/landing/intro/treatedwater_intro.png" alt="하수처리수 설명" />
+          <ImgCard src={treatedwaterIntro} alt="하수처리수 설명" />
         </div>
       </section>
 
@@ -68,7 +72,7 @@ export default function TreatedWaterPage() {
       <section className="pb-[200px]">
         <SectionTitle>하수처리수 재이용시설 의무 대상</SectionTitle>
         <div className="mt-8">
-          <ImgCard src="/images/landing/intro/treatedwater_mandatory.png" alt="하수처리수 재이용시설 의무 대상 설명" />
+          <ImgCard src={treatedwaterMandatory} alt="하수처리수 재이용시설 의무 대상 설명" />
         </div>
       </section>
     </div>
diff --git a/apps/dm_new/app/(with-layout)/status/greywater/page.tsx b/apps/dm_new/app/(with-layout)/status/greywater/page.tsx
index 37d958045..b84a6760d 100644
--- a/apps/dm_new/app/(with-layout)/status/greywater/page.tsx
+++ b/apps/dm_new/app/(with-layout)/status/greywater/page.tsx
@@ -1,7 +1,12 @@
 // apps/dm/app/(landing)/reuse/cases/greywater/page.tsx
 "use client";
 
+import Image, { type StaticImageData } from "next/image";
 import SubPageHeader from "@/components/SubPageHeader";
+import greywaterOverall from "@/public/images/landing/cases/greywater_overall.png";
+import greywaterFactory from "@/public/images/landing/cases/greywater_factory.png";
+import greywaterBuilding from "@/public/images/landing/cases/greywater_building.png";
+import greywaterUsage from "@/public/images/landing/cases/greywater_usage.png";
 
 function SectionTitle({ children }: { children: React.ReactNode }) {
   return (
@@ -21,17 +26,18 @@ function Hr({ className = "" }: HrProps) {
 }
 
 type ImgCardProps = {
-  src: string;
+  src: StaticImageData;
   alt: string;
 };
 
 function ImgCard({ src, alt }: ImgCardProps) {
   return (
     <div className="w-full overflow-x-auto">
-      <img
+      <Image
         src={src}
         alt={alt}
         className="block mx-auto max-w-none"
+        style={{ width: "auto", height: "auto" }}
       />
     </div>
   );
@@ -58,7 +64,7 @@ export default function GreywaterPage() {
       <section className="mt-6">
         <SectionTitle>전체 중수도 설치 및 이용 현황 (공장 및 발전시설 제외)</SectionTitle>
         <div className="mt-8">
-          <ImgCard src="/images/landing/cases/greywater_overall.png" alt="전체 중수도 설치 및 이용 현황 설명" />
+          <ImgCard src={greywaterOverall} alt="전체 중수도 설치 및 이용 현황 설명" />
         </div>
       </section>
 
@@ -68,7 +74,7 @@ export default function GreywaterPage() {
       <section>
         <SectionTitle>공장 및 발전시설 내 중수도 설치 및 이용 현황</SectionTitle>
         <div className="mt-8">
-          <ImgCard src="/images/landing/cases/greywater_factory.png" alt="공장 및 발전시설 내 중수도 설치 및 이용 현황 설명" />
+          <ImgCard src={greywaterFactory} alt="공장 및 발전시설 내 중수도 설치 및 이용 현황 설명" />
         </div>
       </section>
 
@@ -78,7 +84,7 @@ export default function GreywaterPage() {
       <section className="pb-16">
         <SectionTitle>중수도 건축물별 이용량 현황</SectionTitle>
         <div className="mt-8">
-          <ImgCard src="/images/landing/cases/greywater_building.png" alt="중수도 건축물별 이용량 현황 설명" />
+          <ImgCard src={greywaterBuilding} alt="중수도 건축물별 이용량 현황 설명" />
         </div>
       </section>
 
@@ -88,7 +94,7 @@ export default function GreywaterPage() {
       <section className="pb-[200px]">
         <SectionTitle>중수도 용도별 이용량 현황</SectionTitle>
         <div className="mt-8">
-          <ImgCard src="/images/landing/cases/greywater_usage.png" alt="중수도 용도별 이용량 현황 설명" />
+          <ImgCard src={greywaterUsage} alt="중수도 용도별 이용량 현황 설명" />
         </div>
       </section>      
     </div>
diff --git a/apps/dm_new/app/(with-layout)/status/rain/page.tsx b/apps/dm_new/app/(with-layout)/status/rain/page.tsx
index 810053f52..aa33147f0 100644
--- a/apps/dm_new/app/(with-layout)/status/rain/page.tsx
+++ b/apps/dm_new/app/(with-layout)/status/rain/page.tsx
@@ -1,7 +1,11 @@
 // apps/dm/app/(landing)/reuse/cases/rain/page.tsx
 "use client";
 
+import Image, { type StaticImageData } from "next/image";
 import SubPageHeader from "@/components/SubPageHeader";
+import rainwaterBuilding from "@/public/images/landing/cases/rainwater_building.png";
+import rainwaterUsage from "@/public/images/landing/cases/rainwater_usage.png";
+import rainwaterUsageAmount from "@/public/images/landing/cases/rainwater_usage_amount.png";
 
 function SectionTitle({ children }: { children: React.ReactNode }) {
   return (
@@ -21,17 +25,18 @@ function Hr({ className = "" }: HrProps) {
 }
 
 type ImgCardProps = {
-  src: string;
+  src: StaticImageData;
   alt: string;
 };
 
 function ImgCard({ src, alt }: ImgCardProps) {
   return (
     <div className="w-full overflow-x-auto">
-      <img
+      <Image
         src={src}
         alt={alt}
         className="block mx-auto max-w-none"
+        style={{ width: "auto", height: "auto" }}
       />
     </div>
   );
@@ -58,7 +63,7 @@ export default function GreywaterPage() {
       <section className="mt-6">
         <SectionTitle>빗물이용시설의 건축물별 빗물이용량 현황</SectionTitle>
         <div className="mt-8">
-          <ImgCard src="/images/landing/cases/rainwater_building.png" alt="빗물이용시설의 건축물별 빗물이용량 현황 설명" />
+          <ImgCard src={rainwaterBuilding} alt="빗물이용시설의 건축물별 빗물이용량 현황 설명" />
         </div>
       </section>
 
@@ -68,7 +73,7 @@ export default function GreywaterPage() {
       <section>
         <SectionTitle>빗물이용시설의 용도별 분포 (2023년 기준)</SectionTitle>
         <div className="mt-8">
-          <ImgCard src="/images/landing/cases/rainwater_usage.png" alt="빗물이용시설의 용도별 분포 설명" />
+          <ImgCard src={rainwaterUsage} alt="빗물이용시설의 용도별 분포 설명" />
         </div>
       </section>
 
@@ -78,7 +83,7 @@ export default function GreywaterPage() {
       <section className="pb-[200px]">
         <SectionTitle>빗물이용시설의 용도별 빗물이용량 현황</SectionTitle>
         <div className="mt-8">
-          <ImgCard src="/images/landing/cases/rainwater_usage_amount.png" alt="빗물이용시설의 용도별 빗물이용량 현황 설명" />
+          <ImgCard src={rainwaterUsageAmount} alt="빗물이용시설의 용도별 빗물이용량 현황 설명" />
         </div>
       </section>
     </div>
diff --git a/apps/dm_new/app/(with-layout)/status/sewage/page.tsx b/apps/dm_new/app/(with-layout)/status/sewage/page.tsx
index 21b3a5bcf..19214da02 100644
--- a/apps/dm_new/app/(with-layout)/status/sewage/page.tsx
+++ b/apps/dm_new/app/(with-layout)/status/sewage/page.tsx
@@ -1,7 +1,12 @@
 // apps/dm/app/(landing)/reuse/cases/treated/page.tsx
 "use client";
 
+import Image, { type StaticImageData } from "next/image";
 import SubPageHeader from "@/components/SubPageHeader";
+import treatedWaterYear from "@/public/images/landing/cases/treated_water_year.png";
+import treatedWaterUsage from "@/public/images/landing/cases/treated_water_usage.png";
+import treatedWaterFacility from "@/public/images/landing/cases/treated_water_facility.png";
+import treatedWaterRegion from "@/public/images/landing/cases/treated_water_region.png";
 
 function SectionTitle({ children }: { children: React.ReactNode }) {
   return (
@@ -21,17 +26,18 @@ function Hr({ className = "" }: HrProps) {
 }
 
 type ImgCardProps = {
-  src: string;
+  src: StaticImageData;
   alt: string;
 };
 
 function ImgCard({ src, alt }: ImgCardProps) {
   return (
     <div className="w-full overflow-x-auto">
-      <img
+      <Image
         src={src}
         alt={alt}
         className="block mx-auto max-w-none"
+        style={{ width: "auto", height: "auto" }}
       />
     </div>
   );
@@ -58,7 +64,7 @@ export default function GreywaterPage() {
       <section className="mt-6">
         <SectionTitle>연도별 하수처리수 재이용 현황</SectionTitle>
         <div className="mt-8">
-          <ImgCard src="/images/landing/cases/treated_water_year.png" alt="연도별 하수처리수 재이용 현황 설명" />
+          <ImgCard src={treatedWaterYear} alt="연도별 하수처리수 재이용 현황 설명" />
         </div>
       </section>
 
@@ -68,7 +74,7 @@ export default function GreywaterPage() {
       <section>
         <SectionTitle>용도별 하수처리수 재이용 현황</SectionTitle>
         <div className="mt-8">
-          <ImgCard src="/images/landing/cases/treated_water_usage.png" alt="용도별 하수처리수 재이용 현황 설명" />
+          <ImgCard src={treatedWaterUsage} alt="용도별 하수처리수 재이용 현황 설명" />
         </div>
       </section>
 
@@ -78,7 +84,7 @@ export default function GreywaterPage() {
       <section>
         <SectionTitle>하수처리시설 설치 및 이용 현황</SectionTitle>
         <div className="mt-8">
-          <ImgCard src="/images/landing/cases/treated_water_facility.png" alt="하수처리시설 설치 및 이용 현황 설명" />
+          <ImgCard src={treatedWaterFacility} alt="하수처리시설 설치 및 이용 현황 설명" />
         </div>
       </section>
 
@@ -88,7 +94,7 @@ export default function GreywaterPage() {
       <section className="pb-[200px]">
         <SectionTitle>시도별 하수처리수 재이용 현황</SectionTitle>
         <div className="mt-8">
-          <ImgCard src="/images/landing/cases/treated_water_region.png" alt="시도별 하수처리수 재이용 현황 설명" />
+          <ImgCard src={treatedWaterRegion} alt="시도별 하수처리수 재이용 현황 설명" />
         </div>
       </section>
     </div>
diff --git a/apps/dm_new/components/CaseImageSlider.tsx b/apps/dm_new/components/CaseImageSlider.tsx
index 6c50d5a5c..41d8987b8 100644
--- a/apps/dm_new/components/CaseImageSlider.tsx
+++ b/apps/dm_new/components/CaseImageSlider.tsx
@@ -1,6 +1,7 @@
 // apps/dm/app/(landing)/reuse/_components/ImageSlider.tsx
 "use client";
 
+import Image from "next/image";
 import { useEffect, useMemo, useRef, useState } from "react";
 
 type Slide = { src: string; alt?: string };
@@ -86,10 +87,12 @@ export default function CaseImageSlider({
                         w-[80px] h-[80px] rounded-full border border-black/20 bg-white
                         grid place-items-center shadow-sm hover:bg-black/[0.03]"
             >
-            <img
-                src="/images/landing/icon_left_arrow.png"
-                alt="이전"
-                className="w-[12px] h-[22px]"
+            <Image
+              src="/images/landing/icon_left_arrow.png"
+              alt="이전"
+              width={12}
+              height={22}
+              className="w-[12px] h-[22px]"
             />
           </button>
 
@@ -102,10 +105,12 @@ export default function CaseImageSlider({
                         w-[80px] h-[80px] rounded-full border border-black/20 bg-white
                         grid place-items-center shadow-sm hover:bg-black/[0.03]"
             >
-            <img
-                src="/images/landing/icon_right_arrow.png"
-                alt="다음"
-                className="w-[12px] h-[22px]"
+            <Image
+              src="/images/landing/icon_right_arrow.png"
+              alt="다음"
+              width={12}
+              height={22}
+              className="w-[12px] h-[22px]"
             />
           </button>
 
@@ -129,10 +134,13 @@ export default function CaseImageSlider({
             >
               {safeSlides.map((s, i) => (
                 <div key={`${s.src}-${i}`} className="min-w-full">
-                  <img
+                  <Image
                     src={s.src}
                     alt={s.alt ?? `slide-${i + 1}`}
+                    width={583}
+                    height={400}
                     className="w-full h-full object-contain"
+                    style={{ width: "100%", height: "100%" }}
                     draggable={false}
                   />
                 </div>
diff --git a/apps/dm_new/components/CaseTabsCarousel.tsx b/apps/dm_new/components/CaseTabsCarousel.tsx
index 8d916817e..ece8f0848 100644
--- a/apps/dm_new/components/CaseTabsCarousel.tsx
+++ b/apps/dm_new/components/CaseTabsCarousel.tsx
@@ -8,6 +8,7 @@ import React, {
   useRef,
   useState,
 } from "react";
+import Image from "next/image";
 
 /**
  * CaseTabsCarousel.tsx (FINAL OPTIMIZED)
@@ -459,10 +460,12 @@ export default function CaseTabsCarousel() {
             ].join(" ")}
             aria-label="이전"
           >
-            <img
-                src="/images/landing/icon_left_arrow.png"
-                alt="이전"
-                className="w-6 h-6 object-contain"
+            <Image
+              src="/images/landing/icon_left_arrow.png"
+              alt="이전"
+              width={24}
+              height={24}
+              className="w-6 h-6 object-contain"
             />
           </button>
 
@@ -480,10 +483,12 @@ export default function CaseTabsCarousel() {
             ].join(" ")}
             aria-label="다음"
           >
-            <img
-                src="/images/landing/icon_right_arrow.png"
-                alt="다음"
-                className="w-6 h-6 object-contain"
+            <Image
+              src="/images/landing/icon_right_arrow.png"
+              alt="다음"
+              width={24}
+              height={24}
+              className="w-6 h-6 object-contain"
             />
           </button>
 
@@ -513,10 +518,13 @@ export default function CaseTabsCarousel() {
                             className="overflow-hidden rounded-[22px] border-2 border-sky-400 bg-white"
                           >
                             <div className="h-[241px] w-full bg-slate-100 border-b border-b-blue-300">
-                              <img
+                              <Image
                                 src={c.imageSrc}
                                 alt={c.title}
+                                width={640}
+                                height={241}
                                 className="h-full w-full object-cover"
+                                style={{ width: "100%", height: "100%" }}
                                 loading="lazy"
                               />
                             </div>
diff --git a/apps/dm_new/components/ImageSlider.tsx b/apps/dm_new/components/ImageSlider.tsx
index 6c50d5a5c..41d8987b8 100644
--- a/apps/dm_new/components/ImageSlider.tsx
+++ b/apps/dm_new/components/ImageSlider.tsx
@@ -1,6 +1,7 @@
 // apps/dm/app/(landing)/reuse/_components/ImageSlider.tsx
 "use client";
 
+import Image from "next/image";
 import { useEffect, useMemo, useRef, useState } from "react";
 
 type Slide = { src: string; alt?: string };
@@ -86,10 +87,12 @@ export default function CaseImageSlider({
                         w-[80px] h-[80px] rounded-full border border-black/20 bg-white
                         grid place-items-center shadow-sm hover:bg-black/[0.03]"
             >
-            <img
-                src="/images/landing/icon_left_arrow.png"
-                alt="이전"
-                className="w-[12px] h-[22px]"
+            <Image
+              src="/images/landing/icon_left_arrow.png"
+              alt="이전"
+              width={12}
+              height={22}
+              className="w-[12px] h-[22px]"
             />
           </button>
 
@@ -102,10 +105,12 @@ export default function CaseImageSlider({
                         w-[80px] h-[80px] rounded-full border border-black/20 bg-white
                         grid place-items-center shadow-sm hover:bg-black/[0.03]"
             >
-            <img
-                src="/images/landing/icon_right_arrow.png"
-                alt="다음"
-                className="w-[12px] h-[22px]"
+            <Image
+              src="/images/landing/icon_right_arrow.png"
+              alt="다음"
+              width={12}
+              height={22}
+              className="w-[12px] h-[22px]"
             />
           </button>
 
@@ -129,10 +134,13 @@ export default function CaseImageSlider({
             >
               {safeSlides.map((s, i) => (
                 <div key={`${s.src}-${i}`} className="min-w-full">
-                  <img
+                  <Image
                     src={s.src}
                     alt={s.alt ?? `slide-${i + 1}`}
+                    width={583}
+                    height={400}
                     className="w-full h-full object-contain"
+                    style={{ width: "100%", height: "100%" }}
                     draggable={false}
                   />
                 </div>
diff --git a/apps/dm_new/components/Lnb.tsx b/apps/dm_new/components/Lnb.tsx
index 13c6523db..b3861fbe0 100644
--- a/apps/dm_new/components/Lnb.tsx
+++ b/apps/dm_new/components/Lnb.tsx
@@ -1,5 +1,6 @@
 "use client";
 
+import Image from "next/image";
 import Link from "next/link";
 import { usePathname } from "next/navigation";
 import { useEffect, useMemo, useState } from "react";
@@ -130,9 +131,11 @@ export default function Lnb() {
                     isOpen ? "rotate-180" : "rotate-0",
                   ].join(" ")}
                 >
-                  <img
+                  <Image
                     src="/images/landing/drop_arrow.svg"
                     alt="menu toggle icon"
+                    width={28}
+                    height={28}
                     className="h-7 w-7"
                   />
                 </span>