diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index 30b5cf0..dcf0c60 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -68,7 +68,7 @@ dependencies {
     debugImplementation(libs.ui.tooling)
     debugImplementation(libs.ui.test.manifest)
 
-    // Room Database - TAMBAHKAN INI SEMUA
+    // Room Database
     val roomVersion = "2.6.1"
     implementation("androidx.room:room-runtime:$roomVersion")
     implementation("androidx.room:room-ktx:$roomVersion")
@@ -91,4 +91,7 @@ dependencies {
 
     // Gson
     implementation("com.google.code.gson:gson:2.10.1")
+
+    // PDF Support
+    implementation("com.tom-roush:pdfbox-android:2.0.27.0")
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/example/notebook/MainActivity.kt b/app/src/main/java/com/example/notebook/MainActivity.kt
index d12da38..a8f648f 100644
--- a/app/src/main/java/com/example/notebook/MainActivity.kt
+++ b/app/src/main/java/com/example/notebook/MainActivity.kt
@@ -40,6 +40,10 @@ class MainActivity : ComponentActivity() {
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
+
+        // Initialize PDFBox
+        com.example.notebook.utils.PdfHelper.initialize(this)
+
         setContent {
             NotebookTheme {
                 Surface(
diff --git a/app/src/main/java/com/example/notebook/api/GeminiApiService.kt b/app/src/main/java/com/example/notebook/api/GeminiApiService.kt
index 1e57b01..824688a 100644
--- a/app/src/main/java/com/example/notebook/api/GeminiApiService.kt
+++ b/app/src/main/java/com/example/notebook/api/GeminiApiService.kt
@@ -15,7 +15,7 @@ import java.util.concurrent.TimeUnit
  */
 interface GeminiApiService {
 
-    @POST("v1beta/models/gemini-1.5-flash:generateContent")
+    @POST("v1beta/models/gemini-2.0-flash:generateContent")
     suspend fun generateContent(
         @Query("key") apiKey: String,
         @Body request: GeminiRequest
diff --git a/app/src/main/java/com/example/notebook/utils/FileHelper.kt b/app/src/main/java/com/example/notebook/utils/FileHelper.kt
index 1c97023..413b657 100644
--- a/app/src/main/java/com/example/notebook/utils/FileHelper.kt
+++ b/app/src/main/java/com/example/notebook/utils/FileHelper.kt
@@ -76,11 +76,27 @@ object FileHelper {
     }
 
     /**
-     * Baca text dari file
+     * Baca text dari file (support Text, Markdown, dan PDF)
      */
     fun readTextFromFile(filePath: String): String? {
         return try {
-            File(filePath).readText()
+            val file = File(filePath)
+            val extension = file.extension.lowercase()
+
+            when (extension) {
+                "pdf" -> {
+                    // Extract text dari PDF
+                    PdfHelper.extractTextFromPdf(filePath)
+                }
+                "txt", "md", "markdown" -> {
+                    // Baca text biasa
+                    file.readText()
+                }
+                else -> {
+                    println("⚠️ Format file tidak didukung untuk ekstraksi teks: $extension")
+                    null
+                }
+            }
         } catch (e: Exception) {
             e.printStackTrace()
             null
diff --git a/app/src/main/java/com/example/notebook/utils/PdfHelper.kt b/app/src/main/java/com/example/notebook/utils/PdfHelper.kt
new file mode 100644
index 0000000..c2fc1bf
--- /dev/null
+++ b/app/src/main/java/com/example/notebook/utils/PdfHelper.kt
@@ -0,0 +1,93 @@
+package com.example.notebook.utils
+
+import android.content.Context
+import android.net.Uri
+import com.tom_roush.pdfbox.android.PDFBoxResourceLoader
+import com.tom_roush.pdfbox.pdmodel.PDDocument
+import com.tom_roush.pdfbox.text.PDFTextStripper
+import java.io.File
+
+/**
+ * Helper untuk extract text dari PDF
+ */
+object PdfHelper {
+
+    /**
+     * Initialize PDFBox (panggil sekali saat app start)
+     */
+    fun initialize(context: Context) {
+        PDFBoxResourceLoader.init(context)
+    }
+
+    /**
+     * Extract text dari PDF file
+     * Return: Text content atau null jika error
+     */
+    fun extractTextFromPdf(filePath: String): String? {
+        return try {
+            val file = File(filePath)
+            val document = PDDocument.load(file)
+
+            val stripper = PDFTextStripper()
+            val text = stripper.getText(document)
+
+            document.close()
+
+            // Cleanup whitespace
+            text.trim()
+        } catch (e: Exception) {
+            println("❌ Error extract PDF: ${e.message}")
+            e.printStackTrace()
+            null
+        }
+    }
+
+    /**
+     * Extract text dari PDF URI (sebelum disimpan)
+     */
+    fun extractTextFromPdfUri(context: Context, uri: Uri): String? {
+        return try {
+            val inputStream = context.contentResolver.openInputStream(uri)
+            val document = PDDocument.load(inputStream)
+
+            val stripper = PDFTextStripper()
+            val text = stripper.getText(document)
+
+            document.close()
+            inputStream?.close()
+
+            text.trim()
+        } catch (e: Exception) {
+            println("❌ Error extract PDF from URI: ${e.message}")
+            e.printStackTrace()
+            null
+        }
+    }
+
+    /**
+     * Get info PDF (jumlah halaman, dll)
+     */
+    fun getPdfInfo(filePath: String): PdfInfo? {
+        return try {
+            val file = File(filePath)
+            val document = PDDocument.load(file)
+
+            val info = PdfInfo(
+                pageCount = document.numberOfPages,
+                title = document.documentInformation.title ?: "Unknown",
+                author = document.documentInformation.author ?: "Unknown"
+            )
+
+            document.close()
+            info
+        } catch (e: Exception) {
+            null
+        }
+    }
+}
+
+data class PdfInfo(
+    val pageCount: Int,
+    val title: String,
+    val author: String
+)
\ No newline at end of file