diff --git a/README.md b/README.md
index 5875e33..1ccb6de 100644
--- a/README.md
+++ b/README.md
@@ -22,7 +22,7 @@ Event payload body.
 | **document_url**           | url                         | Fetch the html content from `document_url` to disk before rendering.                                                                                                                |
 | **browser_url**            | url                         | Browser the `browser_url` with `playwright` before rendering with `renderer`                                                                                                        |
 | **browser_headers**        | Mapping[str,str]            | Add additional headers to playwright before visiting `browser_url`                                                                                                                  |
-| **browser_papersize**      | `A4` or `Letter`            | Size of the page when creating PDF with playwright                                                                                                                                  |                                                                                                                                                                           |
+| **browser_pdf_options**    | Mapping[str,str]            | Add additional options to playwright `.pdf()` call                                                                                                                                  |                                                                                                                                                                           |
 | **renderer**               | `princexml` or `playwright` | Renderer to render the html with                                                                                                                                                    |
 | **bucket_name**            | string                      | Output the resulting pdf to `s3://{bucket_name}/{uuid}.pdf`. The lambda will require permission to upload to the bucket. The response will include `bucket`, `key`, `presigned_url` |
 | **presigned_url**          | url                         | Output the resulting pdf to the presigned url. Generate the presigned url with `put_object`. See Output for more information.                                                       |
diff --git a/lambda_function.py b/lambda_function.py
index c5afac5..749988f 100644
--- a/lambda_function.py
+++ b/lambda_function.py
@@ -8,7 +8,7 @@
 import tempfile
 import uuid
 import xml.etree.ElementTree as ET
-from collections.abc import Iterator
+from collections.abc import Iterator, Mapping
 from contextlib import contextmanager
 from dataclasses import dataclass, field
 from urllib.parse import urlparse
@@ -39,11 +39,6 @@ class Renderers(str, enum.Enum):
     princexml = "princexml"
 
 
-class Papersize(str, enum.Enum):
-    A4 = "A4"
-    Letter = "Letter"
-
-
 class Payload(pydantic.BaseModel):
     # NOTE: When updating this model, also update the equivalent documentation
     # General Parameters
@@ -58,7 +53,7 @@ class Payload(pydantic.BaseModel):
     ## Browse the document in a browser before rendering
     browser_url: str | None = None
     browser_headers: dict = pydantic.Field(default_factory=dict)
-    browser_papersize: Papersize = Papersize.A4
+    browser_pdf_options: Mapping[str, str] = pydantic.Field(default_factory=dict)
     renderer: Renderers = Renderers.princexml
 
     # Output parameters
@@ -158,10 +153,10 @@ def _playwright_visit_page(browser_url: str, headers: dict) -> Iterator[playwrig
 
 
 def playwright_page_to_pdf(
-    browser_url: str, headers: dict, output_filepath: str, papersize: Papersize = Papersize.A4
+    browser_url: str, headers: dict, output_filepath: str, pdf_options: Mapping[str, str]
 ) -> None:
     with _playwright_visit_page(browser_url, headers) as page:
-        page.pdf(path=output_filepath, format=papersize)
+        page.pdf(path=output_filepath, **pdf_options)
 
 
 def playwright_page_to_html_string(browser_url: str, headers: dict) -> str:
@@ -183,7 +178,7 @@ def pdf_from_document_content(payload: Payload, output_filepath: str) -> None:
                 f"file://{temporary_html_file.name}",
                 payload.browser_headers,
                 output_filepath,
-                payload.browser_papersize,
+                payload.browser_pdf_options,
             )
 
 
@@ -206,7 +201,7 @@ def pdf_from_document_url(payload: Payload, output_filepath: str) -> None:
                 f"file://{temporary_html_file.name}",
                 payload.browser_headers,
                 output_filepath,
-                payload.browser_papersize,
+                payload.browser_pdf_options,
             )
 
 
@@ -226,7 +221,7 @@ def pdf_from_browser_url(payload: Payload, output_filepath: str) -> None:
             payload.browser_url,
             payload.browser_headers,
             output_filepath,
-            payload.browser_papersize,
+            payload.browser_pdf_options,
         )
 
 
diff --git a/tests/test_lambda_e2e.py b/tests/test_lambda_e2e.py
index cefd606..09f4a48 100644
--- a/tests/test_lambda_e2e.py
+++ b/tests/test_lambda_e2e.py
@@ -68,7 +68,11 @@ def test_generating_pdf_from_document_url(self, renderer: str, browser_papersize
         )
 
         status_code, _, pdf_body = call_lamdba(
-            {"document_url": document_url, "renderer": renderer, "browser_papersize": browser_papersize},
+            {
+                "document_url": document_url,
+                "renderer": renderer,
+                "browser_pdf_options": {"format": browser_papersize},
+            },
         )
 
         assert b"Z" in pdf_body
@@ -77,7 +81,11 @@ def test_generating_pdf_from_document_url(self, renderer: str, browser_papersize
     def test_generating_pdf_from_document_content(self, renderer: str, browser_papersize: str):
         """Send an embedded html document and receive the pdf bytes for it"""
         status_code, _, pdf_body = call_lamdba(
-            {"document_content": "<h1>Z</h1>", "renderer": renderer, "browser_papersize": browser_papersize},
+            {
+                "document_content": "<h1>Z</h1>",
+                "renderer": renderer,
+                "browser_pdf_options": {"format": browser_papersize},
+            },
         )
 
         assert b"Z" in pdf_body
@@ -85,7 +93,11 @@ def test_generating_pdf_from_document_content(self, renderer: str, browser_paper
 
     def test_generating_pdf_from_browser_url(self, renderer: str, browser_papersize: str):
         status_code, _, pdf_body = call_lamdba(
-            {"browser_url": "http://google.com", "renderer": renderer, "browser_papersize": browser_papersize},
+            {
+                "browser_url": "http://google.com",
+                "renderer": renderer,
+                "browser_pdf_options": {"format": browser_papersize},
+            },
         )
 
         assert b"Z" in pdf_body