diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0257ac88..778eeec4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,7 @@ where X.Y.Z is the semver of the most recent choreographer release.
 ## [Unreleased]
 
 ### Fixed
+- Fix the page-ready check so that a URL without a trailing slash no longer causes a false load timeout [[#295](https://github.com/plotly/choreographer/pull/295)]
 - Build the `ChromeNotFoundError` message as one string, so it no longer prints as a tuple [[#314](https://github.com/plotly/choreographer/pull/314)], with thanks to @Blizzeq for the contribution!
 
 
diff --git a/src/choreographer/protocol/devtools_async_helpers.py b/src/choreographer/protocol/devtools_async_helpers.py
index c1d2d250..4b9b2dff 100644
--- a/src/choreographer/protocol/devtools_async_helpers.py
+++ b/src/choreographer/protocol/devtools_async_helpers.py
@@ -34,9 +34,9 @@ async def _check_document_ready(session: Session, url: str) -> BrowserResponse:
                 new Promise((resolve) => {
                     if (
                         (document.readyState === 'complete') &&
-                        (window.location==`"""  # CONCATENATE!
+                        (window.location.href.startsWith(`"""  # CONCATENATE!
             f"{url!s}"
-            """`)
+            """`))
                     ){
                         resolve("Was complete");
                     } else {
diff --git a/tests/test_devtools_async_helpers.py b/tests/test_devtools_async_helpers.py
index 86a83132..842def31 100644
--- a/tests/test_devtools_async_helpers.py
+++ b/tests/test_devtools_async_helpers.py
@@ -4,6 +4,7 @@
 import pytest
 
 from choreographer.protocol.devtools_async_helpers import (
+    _check_document_ready,
     create_and_wait,
     execute_js_and_wait,
     navigate_and_wait,
@@ -52,6 +53,31 @@ async def test_create_and_wait(browser):
         await create_and_wait(browser, url="http://192.0.2.1:9999", timeout=0.5)
 
 
+@pytest.mark.asyncio
+async def test_check_document_ready_tolerates_missing_trailing_slash(browser):
+    """Test that the ready check tolerates a missing trailing slash"""
+    _logger.info("testing _check_document_ready...")
+    # Chrome normalizes "https://www.example.com" to "https://www.example.com/",
+    # so an exact comparison against the input URL never matches
+    url = "https://www.example.com"
+    tab = await create_and_wait(browser, url=url, timeout=5.0)
+
+    session = await tab.create_session()
+    try:
+        # Chrome already fired the load event for this tab, so it never fires
+        # again. The check must take the readyState branch or it hangs
+        response = await asyncio.wait_for(
+            _check_document_ready(session, url),
+            timeout=5.0,
+        )
+    except TimeoutError:
+        pytest.fail("The ready check hung, so it did not match the normalized URL")
+    finally:
+        await tab.close_session(session.session_id)
+
+    assert response["result"]["result"]["value"] == "Was complete"
+
+
 @pytest.mark.asyncio
 async def test_navigate_and_wait(browser):
     """Test navigate_and_wait with both valid data URL and bad URL."""