diff --git a/aidial_adapter_vertexai/chat/gemini/processor.py b/aidial_adapter_vertexai/chat/attachment_processor.py
similarity index 100%
rename from aidial_adapter_vertexai/chat/gemini/processor.py
rename to aidial_adapter_vertexai/chat/attachment_processor.py
diff --git a/aidial_adapter_vertexai/chat/claude/conversation_factory.py b/aidial_adapter_vertexai/chat/claude/conversation_factory.py
index 890dace..aa38742 100644
--- a/aidial_adapter_vertexai/chat/claude/conversation_factory.py
+++ b/aidial_adapter_vertexai/chat/claude/conversation_factory.py
@@ -15,11 +15,11 @@
 )
 from anthropic.types.image_block_param import Source
 
+from aidial_adapter_vertexai.chat.attachment_processor import FileTypes
 from aidial_adapter_vertexai.chat.claude.prompt.base import ClaudeConversation
 from aidial_adapter_vertexai.chat.conversation.factory import (
     ConversationFactoryBase,
 )
-from aidial_adapter_vertexai.chat.gemini.processor import FileTypes
 
 ClaudePart = (
     str
diff --git a/aidial_adapter_vertexai/chat/claude/prompt/claude_3.py b/aidial_adapter_vertexai/chat/claude/prompt/claude_3.py
index 01a72bf..f047d25 100644
--- a/aidial_adapter_vertexai/chat/claude/prompt/claude_3.py
+++ b/aidial_adapter_vertexai/chat/claude/prompt/claude_3.py
@@ -3,25 +3,22 @@
 from aidial_sdk.chat_completion import Message
 from anthropic.types import MessageParam, TextBlockParam
 
+from aidial_adapter_vertexai.chat.attachment_processor import (
+    AttachmentProcessor,
+    AttachmentProcessorsBase,
+    max_count_validator,
+    seq_validators,
+)
 from aidial_adapter_vertexai.chat.claude.conversation_factory import (
     SUPPORTED_IMAGE_TYPES,
     ClaudeConversationFactory,
     ClaudePart,
 )
 from aidial_adapter_vertexai.chat.claude.prompt.base import ClaudePrompt
-from aidial_adapter_vertexai.chat.conversation.inputs import (
+from aidial_adapter_vertexai.chat.conversation.converters import (
     messages_to_conversation,
 )
 from aidial_adapter_vertexai.chat.errors import UserError, ValidationError
-from aidial_adapter_vertexai.chat.gemini.processor import (
-    AttachmentProcessor,
-    AttachmentProcessorsBase,
-    max_count_validator,
-    seq_validators,
-)
-from aidial_adapter_vertexai.chat.gemini.prompt.gemini_1_5 import (
-    get_usage_message,
-)
 from aidial_adapter_vertexai.chat.tools import ToolsConfig
 from aidial_adapter_vertexai.dial_api.storage import FileStorage
 from aidial_adapter_vertexai.utils.list import group_by
@@ -47,7 +44,7 @@ async def parse_claude_3_prompt(
 
     processors = AttachmentProcessorsClaude(
         conversation_factory=conversation_factory,
-        processors=[create_image_processor(20)] if supports_vision else [],
+        processors=[_create_image_processor(20)] if supports_vision else [],
         file_storage=file_storage,
     )
 
@@ -95,9 +92,22 @@ def _merge(
     return ListProjection(group_by(messages.list, _key, lambda x: x, _merge))
 
 
-def create_image_processor(max_count: int) -> AttachmentProcessor:
+def _create_image_processor(max_count: int) -> AttachmentProcessor:
     # NOTE: not checked condition: The maximum allowed image file size is 5 MB
     return AttachmentProcessor(
         file_types=SUPPORTED_IMAGE_TYPES,
         init_validator=seq_validators(None, max_count_validator(max_count)),
     )
+
+
+def get_usage_message(exts: List[str]) -> str:
+    return f"""
+The application answers queries about attached images.
+Attach images and ask questions about them in the same message.
+
+Supported document extensions: {', '.join(exts)}.
+
+Examples of queries:
+- "Describe the picture" for one image,
+- "What is depicted in these images?", "Compare the images" for multiple images.
+""".strip()
diff --git a/aidial_adapter_vertexai/chat/conversation/inputs.py b/aidial_adapter_vertexai/chat/conversation/converters.py
similarity index 98%
rename from aidial_adapter_vertexai/chat/conversation/inputs.py
rename to aidial_adapter_vertexai/chat/conversation/converters.py
index 7a3b45d..e0825f5 100644
--- a/aidial_adapter_vertexai/chat/conversation/inputs.py
+++ b/aidial_adapter_vertexai/chat/conversation/converters.py
@@ -2,15 +2,15 @@
 
 from aidial_sdk.chat_completion import Message, Role
 
+from aidial_adapter_vertexai.chat.attachment_processor import (
+    AttachmentProcessorsBase,
+)
 from aidial_adapter_vertexai.chat.conversation.factory import (
     ConversationFactoryBase,
     ConversationT,
     PartT,
 )
 from aidial_adapter_vertexai.chat.errors import ValidationError
-from aidial_adapter_vertexai.chat.gemini.processor import (
-    AttachmentProcessorsBase,
-)
 from aidial_adapter_vertexai.chat.tools import ToolsConfig
 
 FunctionName = str
diff --git a/aidial_adapter_vertexai/chat/gemini/processors.py b/aidial_adapter_vertexai/chat/gemini/processors.py
index 29b4bdb..1f57bb4 100644
--- a/aidial_adapter_vertexai/chat/gemini/processors.py
+++ b/aidial_adapter_vertexai/chat/gemini/processors.py
@@ -1,4 +1,4 @@
-from aidial_adapter_vertexai.chat.gemini.processor import (
+from aidial_adapter_vertexai.chat.attachment_processor import (
     AttachmentProcessor,
     InitValidator,
     max_count_validator,
diff --git a/aidial_adapter_vertexai/chat/gemini/prompt/gemini_1_0_pro.py b/aidial_adapter_vertexai/chat/gemini/prompt/gemini_1_0_pro.py
index 9031abf..f566a07 100644
--- a/aidial_adapter_vertexai/chat/gemini/prompt/gemini_1_0_pro.py
+++ b/aidial_adapter_vertexai/chat/gemini/prompt/gemini_1_0_pro.py
@@ -2,14 +2,16 @@
 
 from aidial_sdk.chat_completion import Message
 
-from aidial_adapter_vertexai.chat.conversation.inputs import (
+from aidial_adapter_vertexai.chat.attachment_processor import (
+    AttachmentProcessors,
+)
+from aidial_adapter_vertexai.chat.conversation.converters import (
     messages_to_conversation,
 )
 from aidial_adapter_vertexai.chat.errors import UserError, ValidationError
 from aidial_adapter_vertexai.chat.gemini.conversation_factory import (
     ConversationFactory,
 )
-from aidial_adapter_vertexai.chat.gemini.processor import AttachmentProcessors
 from aidial_adapter_vertexai.chat.gemini.prompt.base import GeminiPrompt
 from aidial_adapter_vertexai.chat.static_tools import StaticToolsConfig
 from aidial_adapter_vertexai.chat.tools import ToolsConfig
diff --git a/aidial_adapter_vertexai/chat/gemini/prompt/gemini_1_0_pro_vision.py b/aidial_adapter_vertexai/chat/gemini/prompt/gemini_1_0_pro_vision.py
index cbee223..14a0e72 100644
--- a/aidial_adapter_vertexai/chat/gemini/prompt/gemini_1_0_pro_vision.py
+++ b/aidial_adapter_vertexai/chat/gemini/prompt/gemini_1_0_pro_vision.py
@@ -2,17 +2,17 @@
 
 from aidial_sdk.chat_completion import Message, Role
 
-from aidial_adapter_vertexai.chat.conversation.inputs import (
+from aidial_adapter_vertexai.chat.attachment_processor import (
+    AttachmentProcessors,
+    exclusive_validator,
+)
+from aidial_adapter_vertexai.chat.conversation.converters import (
     messages_to_conversation,
 )
 from aidial_adapter_vertexai.chat.errors import UserError, ValidationError
 from aidial_adapter_vertexai.chat.gemini.conversation_factory import (
     ConversationFactory,
 )
-from aidial_adapter_vertexai.chat.gemini.processor import (
-    AttachmentProcessors,
-    exclusive_validator,
-)
 from aidial_adapter_vertexai.chat.gemini.processors import (
     get_image_processor,
     get_pdf_processor,
diff --git a/aidial_adapter_vertexai/chat/gemini/prompt/gemini_1_5.py b/aidial_adapter_vertexai/chat/gemini/prompt/gemini_1_5.py
index 6f49de6..7ac8a00 100644
--- a/aidial_adapter_vertexai/chat/gemini/prompt/gemini_1_5.py
+++ b/aidial_adapter_vertexai/chat/gemini/prompt/gemini_1_5.py
@@ -2,14 +2,16 @@
 
 from aidial_sdk.chat_completion import Message
 
-from aidial_adapter_vertexai.chat.conversation.inputs import (
+from aidial_adapter_vertexai.chat.attachment_processor import (
+    AttachmentProcessors,
+)
+from aidial_adapter_vertexai.chat.conversation.converters import (
     messages_to_conversation,
 )
 from aidial_adapter_vertexai.chat.errors import UserError, ValidationError
 from aidial_adapter_vertexai.chat.gemini.conversation_factory import (
     ConversationFactory,
 )
-from aidial_adapter_vertexai.chat.gemini.processor import AttachmentProcessors
 from aidial_adapter_vertexai.chat.gemini.processors import (
     get_audio_processor,
     get_image_processor,
diff --git a/aidial_adapter_vertexai/chat/gemini/prompt/gemini_2.py b/aidial_adapter_vertexai/chat/gemini/prompt/gemini_2.py
index cc4331d..e98ff87 100644
--- a/aidial_adapter_vertexai/chat/gemini/prompt/gemini_2.py
+++ b/aidial_adapter_vertexai/chat/gemini/prompt/gemini_2.py
@@ -2,16 +2,16 @@
 
 from aidial_sdk.chat_completion import Message
 
-from aidial_adapter_vertexai.chat.conversation.inputs import (
+from aidial_adapter_vertexai.chat.attachment_processor import (
+    AttachmentProcessorsGenAI,
+)
+from aidial_adapter_vertexai.chat.conversation.converters import (
     messages_to_conversation,
 )
 from aidial_adapter_vertexai.chat.errors import UserError, ValidationError
 from aidial_adapter_vertexai.chat.gemini.conversation_factory import (
     GenAIConversationFactory,
 )
-from aidial_adapter_vertexai.chat.gemini.processor import (
-    AttachmentProcessorsGenAI,
-)
 from aidial_adapter_vertexai.chat.gemini.processors import (
     get_audio_processor,
     get_image_processor,