diff --git a/.spotless/mizule.importorder b/.spotless/mizule.importorder
new file mode 100644
index 0000000..c232b17
--- /dev/null
+++ b/.spotless/mizule.importorder
@@ -0,0 +1,6 @@
+#Organize Import Order
+#Tue Mar 30 19:56:59 PDT 2021
+0=
+1=java
+2=javax
+3=\#
diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index ee62d9d..01c3ebc 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -1,7 +1,14 @@
+import com.diffplug.gradle.spotless.FormatExtension
+import net.kyori.indra.licenser.spotless.HeaderFormat
+import java.util.*
+
 plugins {
     id("org.jetbrains.kotlin.jvm") version "1.9.20"
     id("com.github.johnrengelman.shadow") version "8.1.1"
     id("net.kyori.indra") version "3.1.3"
+    id("net.kyori.indra.licenser.spotless") version "3.1.3"
+    id("net.kyori.indra.git") version "3.1.3"
+    id("org.jetbrains.gradle.plugin.idea-ext") version "1.1.7"
     `java-library`
     application
 }
@@ -34,6 +41,46 @@ indra {
     mitLicense()
 }
 
+spotless {
+    fun FormatExtension.applyCommon() {
+        trimTrailingWhitespace()
+        endWithNewline()
+        encoding("UTF-8")
+        toggleOffOn()
+    }
+    java {
+        importOrderFile(rootProject.file(".spotless/mizule.importorder"))
+        removeUnusedImports()
+        formatAnnotations()
+        applyCommon()
+        target("*/src/*/java/**/*.java")
+    }
+    kotlinGradle {
+        applyCommon()
+        ktlint("0.50.0")
+    }
+    kotlin {
+        applyCommon()
+        ktlint("0.50.0")
+    }
+}
+
+indraSpotlessLicenser {
+    headerFormat(HeaderFormat.starSlash())
+    licenseHeaderFile(rootProject.projectDir.resolve("HEADER"))
+
+    val currentYear = Calendar.getInstance().apply {
+        time = Date()
+    }.get(Calendar.YEAR)
+    val createdYear = providers.gradleProperty("createdYear").map { it.toInt() }.getOrElse(currentYear)
+    val year = if (createdYear == currentYear) createdYear.toString() else "$createdYear-$currentYear"
+
+    property("name", providers.gradleProperty("projectName").getOrElse("template"))
+    property("year", year)
+    property("description", project.description ?: "A template project")
+    property("author", providers.gradleProperty("projectAuthor").getOrElse("template"))
+}
+
 application {
     mainClass.set("dev.mizule.imagery.app.launcher.Launcher")
 }
@@ -46,4 +93,11 @@ tasks {
     runShadow {
         workingDir = file("run").also(File::mkdirs)
     }
-}
\ No newline at end of file
+}
+
+idea {
+    module {
+        isDownloadJavadoc = true
+        isDownloadSources = true
+    }
+}
diff --git a/app/src/main/kotlin/dev/mizule/imagery/app/App.kt b/app/src/main/kotlin/dev/mizule/imagery/app/App.kt
index 1de527b..67a23c7 100644
--- a/app/src/main/kotlin/dev/mizule/imagery/app/App.kt
+++ b/app/src/main/kotlin/dev/mizule/imagery/app/App.kt
@@ -1,3 +1,27 @@
+/*
+ * This file is part of Imagery, licensed under the MIT License.
+ *
+ * Copyright (c) 2023 powercas_gamer
+ * Copyright (c) 2023 contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
 package dev.mizule.imagery.app
 
 import com.fasterxml.jackson.module.kotlin.jacksonObjectMapper
@@ -17,7 +41,10 @@ import org.spongepowered.configurate.jackson.JacksonConfigurationLoader
 import org.spongepowered.configurate.kotlin.objectMapperFactory
 import java.nio.file.Path
 import java.util.concurrent.TimeUnit
-import kotlin.io.path.*
+import kotlin.io.path.Path
+import kotlin.io.path.createDirectories
+import kotlin.io.path.inputStream
+import kotlin.io.path.outputStream
 
 private val logger = KotlinLogging.logger {}
 
@@ -76,7 +103,7 @@ class App(private val config: Config) {
             System.currentTimeMillis(),
             file.filename(),
             file.extension(),
-            MimeTypes.getDefaultMimeByExtension(file.extension())
+            MimeTypes.getDefaultMimeByExtension(file.extension()),
         )
 
         dataNode.node(uploadedFile.id).set(uploadedFile)
diff --git a/app/src/main/kotlin/dev/mizule/imagery/app/config/Config.kt b/app/src/main/kotlin/dev/mizule/imagery/app/config/Config.kt
index 68dead1..03bc228 100644
--- a/app/src/main/kotlin/dev/mizule/imagery/app/config/Config.kt
+++ b/app/src/main/kotlin/dev/mizule/imagery/app/config/Config.kt
@@ -1,3 +1,27 @@
+/*
+ * This file is part of Imagery, licensed under the MIT License.
+ *
+ * Copyright (c) 2023 powercas_gamer
+ * Copyright (c) 2023 contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
 package dev.mizule.imagery.app.config
 
 import org.spongepowered.configurate.objectmapping.ConfigSerializable
@@ -15,5 +39,5 @@ data class Config(
     val indexPath: String = "./files.json",
 
     @Comment("The path to the uploaded file storage directory.")
-    val storagePath: String = "./storage"
+    val storagePath: String = "./storage",
 )
diff --git a/app/src/main/kotlin/dev/mizule/imagery/app/launcher/Launcher.kt b/app/src/main/kotlin/dev/mizule/imagery/app/launcher/Launcher.kt
index f899af8..6d4fccd 100644
--- a/app/src/main/kotlin/dev/mizule/imagery/app/launcher/Launcher.kt
+++ b/app/src/main/kotlin/dev/mizule/imagery/app/launcher/Launcher.kt
@@ -1,3 +1,27 @@
+/*
+ * This file is part of Imagery, licensed under the MIT License.
+ *
+ * Copyright (c) 2023 powercas_gamer
+ * Copyright (c) 2023 contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
 @file:JvmName("Launcher")
 
 package dev.mizule.imagery.app.launcher
diff --git a/app/src/main/kotlin/dev/mizule/imagery/app/model/ImageLookupResult.kt b/app/src/main/kotlin/dev/mizule/imagery/app/model/ImageLookupResult.kt
index d08a7fb..61df8de 100644
--- a/app/src/main/kotlin/dev/mizule/imagery/app/model/ImageLookupResult.kt
+++ b/app/src/main/kotlin/dev/mizule/imagery/app/model/ImageLookupResult.kt
@@ -2,5 +2,5 @@ package dev.mizule.imagery.app.model
 
 data class ImageLookupResult(
     val url: String,
-    val delete: String = "$url/del"
+    val delete: String = "$url/del",
 )
diff --git a/app/src/main/kotlin/dev/mizule/imagery/app/model/UploadedFile.kt b/app/src/main/kotlin/dev/mizule/imagery/app/model/UploadedFile.kt
index 9b5dc50..fb9e1ed 100644
--- a/app/src/main/kotlin/dev/mizule/imagery/app/model/UploadedFile.kt
+++ b/app/src/main/kotlin/dev/mizule/imagery/app/model/UploadedFile.kt
@@ -1,3 +1,27 @@
+/*
+ * This file is part of Imagery, licensed under the MIT License.
+ *
+ * Copyright (c) 2023 powercas_gamer
+ * Copyright (c) 2023 contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
 package dev.mizule.imagery.app.model
 
 import org.spongepowered.configurate.objectmapping.ConfigSerializable