diff --git a/pgpainless-core/src/main/kotlin/org/pgpainless/PGPainless.kt b/pgpainless-core/src/main/kotlin/org/pgpainless/PGPainless.kt
index 602510cb..446de46f 100644
--- a/pgpainless-core/src/main/kotlin/org/pgpainless/PGPainless.kt
+++ b/pgpainless-core/src/main/kotlin/org/pgpainless/PGPainless.kt
@@ -76,6 +76,15 @@ class PGPainless(
         return certOrKey.toAsciiArmoredString(packetFormat, armorBuilder)
     }
 
+    @JvmOverloads
+    fun toAsciiArmor(
+        certsOrKeys: Collection<OpenPGPCertificate>,
+        packetFormat: PacketFormat = PacketFormat.ROUNDTRIP
+    ): String {
+        return certsOrKeys.joinToString(
+            separator = "\n", transform = { it.toAsciiArmoredString(packetFormat) })
+    }
+
     @JvmOverloads
     fun toAsciiArmor(
         signature: OpenPGPSignature,