mdmintz · Oct 6, 2026 · Oct 6, 2026 · Oct 6, 2026 · Oct 6, 2026 · Oct 6, 2026
diff --git a/README.md b/README.md
diff --git a/examples/cdp_mode/ReadMe.md b/examples/cdp_mode/ReadMe.md
@@ -8,7 +8,7 @@
 
 <h3 align="left">⚙️ Stealthy architecture flowchart:</h3>
 
-<img src="https://seleniumbase.github.io/other/sb_architecture.png" width="596" alt="Stealthy architecture flowchart" />
+<img src="https://seleniumbase.github.io/other/sb_architecture.png" width="596" style="max-width: 100% !important; height: auto !important;" alt="Stealthy architecture flowchart" />
 
 ----
 
@@ -22,7 +22,7 @@
 
 ℹ️ Note the differences between <b>UC Mode</b> and <b>CDP Mode</b>:
 
-👤 <b translate="no">UC Mode</b>'s stealth is based on a modified <code>chromedriver</code> (<code>uc_driver</code>) that avoids bot-detection by disconnecting and reconnecting WebDriver from the browser at strategic times.
+👤 <b translate="no">UC Mode</b>'s stealth is based on a modified <code>chromedriver</code> (renamed <code>uc_driver</code>) that avoids bot-detection by disconnecting and reconnecting WebDriver from the browser at strategic times.
 
 🐙 <b translate="no">CDP Mode</b>'s stealth comes from using the Chrome DevTools Protocol directly, which is much better at avoiding bot-detection. CDP Mode can also be used to make Playwright stealthy.
 
@@ -39,13 +39,13 @@ In <b translate="no">Pure CDP Mode</b>, CDP is used to launch the browser and pe
 ```python
 from seleniumbase import sb_cdp
 
-sb = sb_cdp.Chrome(OPTIONS)
-sb.goto(URL)
+sb = sb_cdp.Chrome()
+sb.goto("https://example.com")
 ```
 
 ℹ️ The browser quits automatically when Python goes out-of-scope. You can also quit the browser before that by calling `sb.quit()`.
 
-Example from [SeleniumBase/examples/cdp_mode/raw_cdp_gitlab.py](https://github.com/seleniumbase/SeleniumBase/blob/master/examples/cdp_mode/raw_cdp_gitlab.py):
+📝 Here's [SeleniumBase/examples/cdp_mode/raw_cdp_gitlab.py](https://github.com/seleniumbase/SeleniumBase/blob/master/examples/cdp_mode/raw_cdp_gitlab.py):
 
 ```python
 from seleniumbase import sb_cdp
@@ -59,11 +59,13 @@ sb.highlight('button:contains("Sign in")')
 sb.quit()
 ```
 
-<img src="https://seleniumbase.github.io/other/cf_sec.jpg" title="SeleniumBase" width="332"> <img src="https://seleniumbase.github.io/other/gitlab_bypass.png" title="SeleniumBase" width="288">
+<img src="https://seleniumbase.github.io/other/gitlab_bypass.png" title="SeleniumBase" width="400" style="max-width: 100% !important; height: auto !important;" />
 
 ℹ️  `sb.solve_captcha()` handles CAPTCHAs that aren't automatically bypassed.
 
-Example from [SeleniumBase/examples/cdp_mode/raw_cdp_turnstile.py](https://github.com/seleniumbase/SeleniumBase/blob/master/examples/cdp_mode/raw_cdp_turnstile.py):
+----
+
+📝 Here's [SeleniumBase/examples/cdp_mode/raw_cdp_turnstile.py](https://github.com/seleniumbase/SeleniumBase/blob/master/examples/cdp_mode/raw_cdp_turnstile.py):
 
 ```python
 from seleniumbase import sb_cdp
@@ -77,28 +79,35 @@ sb.post_message("SeleniumBase wasn't detected", duration=3)
 sb.quit()
 ```
 
-Another example: ([SeleniumBase/examples/cdp_mode/raw_cdp_methods.py](https://github.com/seleniumbase/SeleniumBase/blob/master/examples/cdp_mode/raw_cdp_methods.py))
+<img src="https://seleniumbase.github.io/other/turnstile_click.jpg" title="SeleniumBase" width="440" style="max-width: 100% !important; height: auto !important;" />
+
+----
+
+📝 Here’s [SeleniumBase/examples/cdp_mode/raw_cdp_methods.py](https://github.com/seleniumbase/SeleniumBase/blob/master/examples/cdp_mode/raw_cdp_methods.py):
 
 ```python
 from seleniumbase import sb_cdp
 
-sb = sb_cdp.Chrome()
+sb = sb_cdp.Chrome(fast=True)
 sb.goto("https://seleniumbase.io/demo_page")
-sb.press_keys("input", "Text")
-sb.highlight("button")
-sb.type("textarea", "Here are some words")
-sb.click("button")
+sb.type("input", "Quickly type text!")
+sb.press_keys("textarea", "Slowly type text!")
+sb.click("#myButton")
 sb.set_value("input#mySlider", "100")
 sb.click_visible_elements("input.checkBoxClassB")
 sb.select_option_by_text("#mySelect", "Set to 75%")
-sb.gui_hover_and_click("#myDropdown", "#dropOption2")
-sb.gui_click_element("#checkBox1")
-sb.gui_drag_and_drop("img#logo", "div#drop2")
+sb.hover_and_click("#myDropdown", "#dropOption2")
+sb.click("#checkBox1")
+sb.drag_and_drop("img#logo", "div#drop2")
 sb.nested_click("iframe#myFrame3", ".fBox")
-sb.sleep(2)
+sb.highlight("#myButton")
 sb.quit()
 ```
 
+<img src="https://seleniumbase.github.io/cdn/gif/demo_page_6.gif" width="500" style="max-width: 100% !important; height: auto !important;" alt="SeleniumBase Example" />
+
+ℹ️  Setting `fast=True` lets your automation go at full speed, which may be useful if maximum stealth isn't your goal.
+
 ----
 
 ### 🐙 <b translate="no">CDP Mode</b> as a subset of UC Mode
@@ -111,20 +120,21 @@ That disconnects WebDriver from Chrome (which prevents detection), and gives you
 
 > (Calling **`sb.goto(url)`** from UC Mode also activates CDP Mode now.)
 
-Example from [SeleniumBase/examples/cdp_mode/raw_planetmc.py](https://github.com/seleniumbase/SeleniumBase/blob/master/examples/cdp_mode/raw_planetmc.py):
+📝 Here's  [SeleniumBase/examples/cdp_mode/raw_planetmc.py](https://github.com/seleniumbase/SeleniumBase/blob/master/examples/cdp_mode/raw_planetmc.py):
 
 ```python
 from seleniumbase import SB
 
 with SB(uc=True, test=True, guest=True) as sb:
     sb.activate_cdp_mode()
-    sb.goto("www.planetminecraft.com/account/sign_in/")
+    sb.goto("www.planetminecraft.com/account/sign_in")
     sb.solve_captcha()
+    # "LOG IN" is enabled when the CAPTCHA is bypassed
     sb.wait_for_element_absent("input[disabled]")
     sb.sleep(2)
 ```
 
-<img src="https://seleniumbase.github.io/other/planet_mc.png" title="SeleniumBase" width="480">
+<img src="https://seleniumbase.github.io/other/pmc_captcha.png" width="570" style="max-width: 100% !important; height: auto !important;" alt="Cloudflare Turnstile bypassed successfully" />
 
 To use a WebDriver-only method from UC Mode when WebDriver is disconnected, call:
 

diff --git a/examples/cdp_mode/raw_cdp_login.py b/examples/cdp_mode/raw_cdp_login.py
@@ -3,7 +3,7 @@
 
 
 def main():
-    sb = sb_cdp.Chrome()
+    sb = sb_cdp.Chrome(fast=True)
     sb.goto("https://seleniumbase.io/simple/login")
     sb.type("#username", "demo_user")
     sb.type("#password", "secret_pass")

diff --git a/examples/cdp_mode/raw_cdp_methods.py b/examples/cdp_mode/raw_cdp_methods.py
@@ -1,6 +1,6 @@
 from seleniumbase import sb_cdp
 
-sb = sb_cdp.Chrome()
+sb = sb_cdp.Chrome(fast=True)
 sb.goto("https://seleniumbase.io/demo_page")
 sb.type("input", "Quickly type text!")
 sb.press_keys("textarea", "Slowly type text!")

diff --git a/examples/cdp_mode/raw_demo_site.py b/examples/cdp_mode/raw_demo_site.py
@@ -1,7 +1,7 @@
 """Example of using various CDP Mode commands."""
 from seleniumbase import SB
 
-with SB(uc=True, test=True) as sb:
+with SB(uc=True, test=True, fast=True) as sb:
     sb.activate_cdp_mode()
     sb.goto("https://seleniumbase.io/demo_page")
 
@@ -66,7 +66,7 @@
 
     # Click inside an iframe and test highlighting
     sb.flash("iframe#myFrame3")
-    sb.sleep(1)
+    sb.sleep(0.5)
     sb.nested_click("iframe#myFrame3", ".fBox")
     sb.sleep(0.5)
     sb.highlight("iframe#myFrame3")
diff --git a/examples/cdp_mode/raw_drag_and_drop.py b/examples/cdp_mode/raw_drag_and_drop.py
@@ -1,14 +1,14 @@
 from seleniumbase import SB
 
-with SB(uc=True, test=True, incognito=True) as sb:
+with SB(uc=True, test=True, incognito=True, fast=True) as sb:
     sb.activate_cdp_mode()
     sb.goto("https://seleniumbase.io/other/drag_and_drop")
     sb.assert_element_not_visible("#div1 img#drag1")
     sb.drag_and_drop("#drag1", "#div1")
     sb.assert_element("#div1 img#drag1")
     sb.sleep(1)
 
-with SB(uc=True, test=True, incognito=True) as sb:
+with SB(uc=True, test=True, incognito=True, fast=True) as sb:
     sb.activate_cdp_mode()
     sb.goto("https://jqueryui.com/draggable/")
     sb.switch_to_frame("iframe")

diff --git a/examples/cdp_mode/raw_geolocation.py b/examples/cdp_mode/raw_geolocation.py
@@ -6,9 +6,8 @@
 @decorators.print_runtime("Geolocation CDP Example")
 def main():
     location = (48.87645, 2.26340)
-    sb = sb_cdp.Chrome(geoloc=location)
+    sb = sb_cdp.Chrome(geoloc=location, fast=True)
     sb.goto("https://www.openstreetmap.org/")
-    sb.sleep(2)
     sb.click('a[aria-label="Show My Location"]')
     sb.assert_url_contains("48.876450/2.263400")
     sb.sleep(5)

diff --git a/examples/raw_parameter_script.py b/examples/raw_parameter_script.py
@@ -108,6 +108,7 @@
     sb.rec_print = False
     sb.report_on = False
     sb.is_pytest = False
+    sb.fast_mode = False
     sb.slow_mode = False
     sb.demo_mode = False
     sb.time_limit = None

diff --git a/help_docs/customizing_test_runs.md b/help_docs/customizing_test_runs.md
@@ -183,6 +183,7 @@ pytest my_first_test.py --settings-file=custom_settings.py
 --archive-logs  # (Archive existing log files instead of deleting them.)
 --archive-downloads  # (Archive old downloads instead of deleting them.)
 --time-limit=SECONDS  # (Safely fail any test that exceeds the time limit.)
+--fast  # (Run the automation at full speed. May impact stealth.)
 --slow  # (Slow down the automation. Faster than using Demo Mode.)
 --demo  # (Slow down and visually see test actions as they occur.)
 --demo-sleep=SECONDS  # (Set the wait time after Slow & Demo Mode actions.)

diff --git a/mcp_servers/pyproject.toml b/mcp_servers/pyproject.toml
@@ -1,12 +1,12 @@
 [project]
 name = "seleniumbase-mcp"
-version = "1.4.0dev0"
+version = "1.4.1dev0"
 description = "MCP server exposing SeleniumBase CDP Mode as tools for MCP clients."
 readme = "README.md"
 requires-python = ">=3.10"
 license = "MIT"
 dependencies = [
-    "mcp[cli]>=2.2.0,<3.0.0",
+    "mcp[cli]>=2.3.0,<3.0.0",
     "seleniumbase",
 ]
 keywords = [

diff --git a/mcp_servers/requirements.txt b/mcp_servers/requirements.txt
@@ -1,4 +1,4 @@
-mcp[cli]>=2.2.0,<3.0.0
+mcp[cli]>=2.3.0,<3.0.0
 -e ..
 
 # `-e ..` installs SeleniumBase itself from the repo root (one directory

diff --git a/requirements.txt b/requirements.txt
@@ -7,13 +7,13 @@ certifi>=2026.7.22
 exceptiongroup>=1.3.1
 websockets~=16.1.1;python_version=="3.10"
 websockets>=16.1.1;python_version>="3.11"
-filelock>=4.0.8
+filelock>=4.0.12
 fasteners>=0.20
 mycdp>=1.4.0
 pynose>=1.5.5
 typing-extensions>=4.16.0
 sbvirtualdisplay>=1.4.0
-MarkupSafe>=3.0.3
+MarkupSafe>=3.0.4
 Jinja2>=3.1.6
 six>=1.17.0
 parse>=1.22.2
@@ -68,5 +68,5 @@ coverage>=7.16.2
 pytest-cov>=7.1.0
 flake8==7.4.1
 mccabe==0.7.0
-pyflakes==4.0.1
+pyflakes==4.0.2
 pycodestyle==2.15.0
diff --git a/seleniumbase/__version__.py b/seleniumbase/__version__.py
@@ -1,2 +1,2 @@
 # seleniumbase package
-__version__ = "4.55.0"
+__version__ = "4.55.1"
diff --git a/seleniumbase/behave/behave_sb.py b/seleniumbase/behave/behave_sb.py
@@ -59,6 +59,7 @@
 -D archive-logs  (Archive existing log files instead of deleting them.)
 -D archive-downloads  (Archive old downloads instead of deleting them.)
 -D time-limit=SECONDS  (Safely fail any test that exceeds the time limit.)
+-D fast  (Run the automation at full speed. May impact stealth.)
 -D slow  (Slow down the automation. Faster than using Demo Mode.)
 -D demo  (Slow down and visually see test actions as they occur.)
 -D demo-sleep=SECONDS  (Set the wait time after Slow & Demo Mode actions.)
@@ -221,6 +222,7 @@ def get_configured_sb(context):
     sb.rec_print = False
     sb.report_on = False
     sb.is_pytest = False
+    sb.fast_mode = False
     sb.slow_mode = False
     sb.demo_mode = False
     sb.time_limit = None
@@ -718,6 +720,10 @@ def get_configured_sb(context):
             sb.recorder_mode = True
             sb.recorder_ext = True
             continue
+        # Handle: -D fast / fast-mode / fast_mode
+        if low_key in ["fast", "fast-mode", "fast_mode"]:
+            sb.fast_mode = True
+            continue
         # Handle: -D slow / slowmo / slow-mode / slow_mode
         if low_key in ["slow", "slowmo", "slow-mode", "slow_mode"]:
             sb.slow_mode = True

diff --git a/seleniumbase/core/browser_launcher.py b/seleniumbase/core/browser_launcher.py
@@ -474,6 +474,15 @@ def __is_cdp_swap_needed(driver):
     return shared_utils.is_cdp_swap_needed(driver)
 
 
+def __is_using_fast_mode():
+    if (
+        (hasattr(sb_config, "fast_mode") and sb_config.fast_mode)
+        or "--fast" in sys.argv
+    ):
+        return True
+    return False
+
+
 def uc_execute_cdp_cmd(driver, *args, **kwargs):
     if not driver.is_connected():
         driver.connect()
@@ -670,7 +679,7 @@ def uc_open_with_cdp_mode(driver, url=None, **kwargs):
     ):
         # CDP Mode was already initialized
         driver.cdp.open(url, **kwargs)
-        if not safe_url:
+        if not safe_url and not __is_using_fast_mode():
             time.sleep(constants.UC.CDP_MODE_OPEN_WAIT)
             if IS_WINDOWS:
                 time.sleep(constants.UC.EXTRA_WINDOWS_WAIT)
@@ -755,7 +764,7 @@ def uc_open_with_cdp_mode(driver, url=None, **kwargs):
             shared_utils.make_writable(constants.MultiBrowser.PYAUTOGUILOCK)
         loop.run_until_complete(page.activate())
     loop.run_until_complete(page.wait())
-    if not safe_url:
+    if not safe_url and not __is_using_fast_mode():
         time.sleep(constants.UC.CDP_MODE_OPEN_WAIT)
         if IS_WINDOWS:
             time.sleep(constants.UC.EXTRA_WINDOWS_WAIT)