diff --git a/app/src/main/java/io/legado/app/utils/ZipUtils.kt b/app/src/main/java/io/legado/app/utils/ZipUtils.kt
index e77c52db7..43656bcb4 100644
--- a/app/src/main/java/io/legado/app/utils/ZipUtils.kt
+++ b/app/src/main/java/io/legado/app/utils/ZipUtils.kt
@@ -4,6 +4,7 @@ import kotlinx.coroutines.Dispatchers.IO
 import kotlinx.coroutines.withContext
 
 import java.io.*
+import java.util.zip.GZIPOutputStream
 import java.util.zip.ZipEntry
 import java.util.zip.ZipFile
 import java.util.zip.ZipOutputStream
@@ -11,6 +12,17 @@ import java.util.zip.ZipOutputStream
 @Suppress("unused", "BlockingMethodInNonBlockingContext", "MemberVisibilityCanBePrivate")
 object ZipUtils {
 
+    fun zipString(text: String): ByteArray {
+        val byteOut = ByteArrayOutputStream()
+        val zip = GZIPOutputStream(byteOut)
+        zip.use {
+            it.write(text.toByteArray())
+        }
+        return byteOut.use {
+            it.toByteArray()
+        }
+    }
+
     /**
      * Zip the files.
      *