diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 2ca759f4..30231283 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -29,6 +29,7 @@
         android:supportsRtl="false"
         android:theme="@style/Theme.App"
         tools:targetApi="tiramisu">
+
         <activity
             android:name=".MainActivity"
             android:exported="true"
@@ -44,6 +45,17 @@
             </intent-filter>
         </activity>
 
+        <activity
+            android:name=".ProcessTextActivity"
+            android:exported="true"
+            android:label="@string/process_text_action_name">
+            <intent-filter>
+                <action android:name="android.intent.action.PROCESS_TEXT" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <data android:mimeType="text/plain" />
+            </intent-filter>
+        </activity>
+
         <!-- Handle browser intents. -->
         <!-- Disabled by default. Needs to be enabled in app settings. -->
         <activity-alias
diff --git a/app/src/main/kotlin/com/svenjacobs/app/leon/ProcessTextActivity.kt b/app/src/main/kotlin/com/svenjacobs/app/leon/ProcessTextActivity.kt
new file mode 100644
index 00000000..a8429018
--- /dev/null
+++ b/app/src/main/kotlin/com/svenjacobs/app/leon/ProcessTextActivity.kt
@@ -0,0 +1,65 @@
+/*
+ * Léon - The URL Cleaner
+ * Copyright (C) 2024 Sven Jacobs
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.svenjacobs.app.leon
+
+import android.content.Intent
+import android.os.Build
+import android.os.Bundle
+import androidx.activity.ComponentActivity
+import androidx.annotation.RequiresApi
+import com.svenjacobs.app.leon.core.domain.CleanerService
+import kotlinx.coroutines.runBlocking
+
+@RequiresApi(Build.VERSION_CODES.M)
+class ProcessTextActivity : ComponentActivity() {
+
+	override fun onCreate(savedInstanceState: Bundle?) {
+		super.onCreate(savedInstanceState)
+
+		val text = intent.getCharSequenceExtra(Intent.EXTRA_PROCESS_TEXT)?.toString()
+		val readonly = intent.getBooleanExtra(Intent.EXTRA_PROCESS_TEXT_READONLY, false)
+
+		when {
+			// If readonly, delegate to MainActivity
+			readonly -> startActivity(
+				Intent(this, MainActivity::class.java).apply {
+					action = Intent.ACTION_SEND
+					type = "text/plain"
+					putExtra(Intent.EXTRA_TEXT, text)
+				},
+			)
+
+			text.isNullOrBlank() -> setResult(RESULT_CANCELED)
+
+			// Needs to run with runBlocking or else setResult() won't work
+			else -> runBlocking {
+				val result = CleanerService().clean(text)
+
+				setResult(
+					RESULT_OK,
+					Intent().apply {
+						putExtra(Intent.EXTRA_PROCESS_TEXT, result.cleanedText)
+					},
+				)
+			}
+		}
+
+		finish()
+	}
+}
diff --git a/app/src/main/res/values-de/strings.xml b/app/src/main/res/values-de/strings.xml
index 0ce8d0e5..5b59b973 100644
--- a/app/src/main/res/values-de/strings.xml
+++ b/app/src/main/res/values-de/strings.xml
@@ -43,4 +43,5 @@
     <string name="open_share_menu">Teilenmenü öffnen</string>
     <string name="open_url">URL öffnen</string>
     <string name="copy_to_clipboard">In Zwischenablage kopieren</string>
+    <string name="process_text_action_name">URL säubern (Léon)</string>
 </resources>
diff --git a/app/src/main/res/values-pl/strings.xml b/app/src/main/res/values-pl/strings.xml
index 734f9c52..0c0db30e 100644
--- a/app/src/main/res/values-pl/strings.xml
+++ b/app/src/main/res/values-pl/strings.xml
@@ -43,4 +43,5 @@
     <string name="open_share_menu">Open share menu</string> <!-- TODO: translate -->
     <string name="open_url">Open URL</string> <!-- TODO: translate -->
     <string name="copy_to_clipboard">Copy to clipboard</string> <!-- TODO: translate -->
+    <string name="process_text_action_name">Clean URL (Léon)</string> <!-- TODO: translate -->
 </resources>
diff --git a/app/src/main/res/values-ru/strings.xml b/app/src/main/res/values-ru/strings.xml
index 28f4fda1..c627ce97 100644
--- a/app/src/main/res/values-ru/strings.xml
+++ b/app/src/main/res/values-ru/strings.xml
@@ -43,4 +43,5 @@
     <string name="open_share_menu">Open share menu</string> <!-- TODO: translate -->
     <string name="open_url">Open URL</string> <!-- TODO: translate -->
     <string name="copy_to_clipboard">Copy to clipboard</string> <!-- TODO: translate -->
+    <string name="process_text_action_name">Clean URL (Léon)</string> <!-- TODO: translate -->
 </resources>
diff --git a/app/src/main/res/values-vi/strings.xml b/app/src/main/res/values-vi/strings.xml
index 0f238807..fddb8248 100644
--- a/app/src/main/res/values-vi/strings.xml
+++ b/app/src/main/res/values-vi/strings.xml
@@ -44,4 +44,5 @@
     <string name="open_share_menu">Mở menu chia sẻ</string>
     <string name="open_url">Mở URL</string>
     <string name="copy_to_clipboard">Sao chép vào clipboard</string>
+    <string name="process_text_action_name">Clean URL (Léon)</string> <!-- TODO: translate -->
 </resources>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index ebe5f0bd..6737b0f9 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -44,4 +44,5 @@
     <string name="open_share_menu">Open share menu</string>
     <string name="open_url">Open URL</string>
     <string name="copy_to_clipboard">Copy to clipboard</string>
+    <string name="process_text_action_name">Clean URL (Léon)</string>
 </resources>