diff --git a/jsondoc/utils/block.py b/jsondoc/utils/block.py
index 7155048..235c6aa 100644
--- a/jsondoc/utils/block.py
+++ b/jsondoc/utils/block.py
@@ -54,3 +54,70 @@ def _process_block_and_children(
     if hasattr(block, "children") and block.children:
         for child in block.children:
             _process_block_and_children(child, block_map)
+
+
+def replace_urls(
+    input_obj: Page | BlockBase | list[BlockBase],
+    url_replace_map: dict[str, str],
+) -> None:
+    """
+    Recursively processes all blocks in the input object and replaces any file or image URLs
+    that are found in the url_replace_map with their corresponding values.
+
+    Args:
+        input_obj: Can be either a Page object, a single Block object, or a list of Block objects
+        url_replace_map: A dictionary mapping original URLs to their replacement URLs
+    """
+    # Extract all blocks
+    blocks = extract_blocks(input_obj)
+
+    # Process each block
+    for block_id, block in blocks.items():
+        _replace_url_in_block(block, url_replace_map)
+
+
+def _replace_url_in_container(container, container_type, url_replace_map):
+    """
+    Helper function to replace URL in a file or external container.
+
+    Args:
+        container: The container object that might have URL information
+        container_type: The type of container ('file' or 'external')
+        url_replace_map: Dictionary mapping original URLs to replacement URLs
+    """
+    if not hasattr(container, container_type):
+        return
+
+    url_container = getattr(container, container_type)
+    if hasattr(url_container, "url"):
+        current_url = getattr(url_container, "url")
+        if current_url in url_replace_map:
+            setattr(url_container, "url", url_replace_map[current_url])
+
+
+def _replace_url_in_block(block: BlockBase, url_replace_map: dict[str, str]) -> None:
+    """
+    Helper function to replace URLs in a specific block based on the url_replace_map.
+
+    Args:
+        block: The block to process
+        url_replace_map: A dictionary mapping original URLs to their replacement URLs
+    """
+    if not hasattr(block, "type"):
+        return
+
+    block_type = getattr(block, "type")
+
+    # Check for image block
+    if block_type == "image" and hasattr(block, "image"):
+        image = getattr(block, "image")
+        if hasattr(image, "type"):
+            image_type = getattr(image, "type")
+            _replace_url_in_container(image, image_type, url_replace_map)
+
+    # Check for file block
+    elif block_type == "file" and hasattr(block, "file"):
+        file_block = getattr(block, "file")
+        if hasattr(file_block, "type"):
+            file_type = getattr(file_block, "type")
+            _replace_url_in_container(file_block, file_type, url_replace_map)