diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index 17a80af..497108e 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -29,11 +29,8 @@ android {
         }
     }
     compileOptions {
-        sourceCompatibility = JavaVersion.VERSION_11
-        targetCompatibility = JavaVersion.VERSION_11
-    }
-    kotlinOptions {
-        jvmTarget = "11"
+        sourceCompatibility = JavaVersion.VERSION_21
+        targetCompatibility = JavaVersion.VERSION_21
     }
     buildFeatures {
         compose = true
@@ -51,6 +48,8 @@ dependencies {
 
     ksp("androidx.room:room-compiler:$room_version")
 
+    implementation("io.github.chochanaresh:filepicker:0.6.0")
+
     implementation(libs.androidx.core.ktx)
     implementation(libs.androidx.lifecycle.runtime.ktx)
     implementation(libs.androidx.activity.compose)
diff --git a/app/src/main/java/com/mirenkov/ktheightmap/MainActivity.kt b/app/src/main/java/com/mirenkov/ktheightmap/MainActivity.kt
index 89784cd..eaf5142 100644
--- a/app/src/main/java/com/mirenkov/ktheightmap/MainActivity.kt
+++ b/app/src/main/java/com/mirenkov/ktheightmap/MainActivity.kt
@@ -92,8 +92,8 @@ fun Main(vm: TileViewModel = viewModel()) {
             Box(modifier = Modifier.safeDrawingPadding()
                 .align(Alignment.CenterEnd)
                 .rotate(-90F)
-                .size(240.dp, 40.dp)
-                .offset(0.dp, 80.dp)
+                .size(200.dp, 40.dp)
+                .offset(0.dp, 60.dp)
             ) {
                 Slider(
                     value = sliderValue.floatValue,
diff --git a/app/src/main/java/com/mirenkov/ktheightmap/SettingsActivity.kt b/app/src/main/java/com/mirenkov/ktheightmap/SettingsActivity.kt
index dd15f19..c298239 100644
--- a/app/src/main/java/com/mirenkov/ktheightmap/SettingsActivity.kt
+++ b/app/src/main/java/com/mirenkov/ktheightmap/SettingsActivity.kt
@@ -1,18 +1,66 @@
 package com.mirenkov.ktheightmap
 
 import android.os.Bundle
+import android.util.Log
 import androidx.activity.ComponentActivity
 import androidx.activity.compose.setContent
 import androidx.activity.enableEdgeToEdge
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.safeDrawingPadding
+import androidx.compose.material3.Button
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
 import com.mirenkov.ktheightmap.ui.theme.KtHeightMapTheme
+import com.nareshchocha.filepickerlibrary.FilePickerResultContracts
+import com.nareshchocha.filepickerlibrary.models.PickerData
+import com.nareshchocha.filepickerlibrary.models.PopUpConfig
+import java.io.FileInputStream
+import java.util.zip.ZipEntry
+import java.util.zip.ZipInputStream
 
 class SettingsActivity : ComponentActivity() {
         override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
+        val launcher = registerForActivityResult(FilePickerResultContracts.PickDocumentFile()) { result ->
+            if (result.errorMessage != null) {
+                Log.e("Picker", result.errorMessage ?: "")
+            } else {
+                val filePath = result.selectedFilePath
+                filePath?.let {
+                    if (!it.endsWith(".zip"))
+                        return@let
+                    ZipInputStream(FileInputStream(it)).use { zipInputStream ->
+                        var entry = zipInputStream.nextEntry
+                        while (entry != null) {
+                            with(entry.name) {
+                                if (count { it == '/' } == 4 && endsWith(".jpg"))
+                                    processEntry(entry)
+                            }
+                            entry = zipInputStream.nextEntry
+                        }
+                    }
+                }
+            }
+        }
         enableEdgeToEdge()
         setContent {
             KtHeightMapTheme {
+                Column(Modifier.fillMaxSize()
+                    .safeDrawingPadding()) {
+                        Button(onClick = {
+                            launcher.launch(null)
+                        }) { Text(text = "Load database") }
+                    }
+                }
             }
         }
     }
+}
+
+fun processEntry(entry: ZipEntry) {
+    Log.i(TAG, entry.name)
 }
\ No newline at end of file
diff --git a/build.gradle.kts b/build.gradle.kts
index b162aa1..2774e43 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -1,7 +1,8 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
+
 plugins {
     alias(libs.plugins.android.application) apply false
     alias(libs.plugins.kotlin.android) apply false
     alias(libs.plugins.kotlin.compose) apply false
-    id("com.google.devtools.ksp") version "2.0.21-1.0.27" apply false
+    id("com.google.devtools.ksp") version "2.2.0-2.0.2" apply false
 }
\ No newline at end of file
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 3642cb8..975c757 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -1,6 +1,6 @@
 [versions]
-agp = "8.10.1"
-kotlin = "2.0.21"
+agp = "8.12.0"
+kotlin = "2.2.0"
 coreKtx = "1.16.0"
 junit = "4.13.2"
 junitVersion = "1.2.1"
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 5dbea34..eac15ee 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
 #Thu Jul 24 13:19:06 MSK 2025
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.11.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.13-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists