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NEW FORUM: Join us on GitHub Discussions.

This is an old forum for support and discussion of the CEF Python project.
You may also ask questions on Stack Overflow with the #cefpython tag.
If you would like to support CEF Python development efforts please see the Support Development section.

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Joseph Day, … Dianda Lin5

May 25

Support for Python 3.10

I have a newer pull request for cef v147 at https://github.com/cztomczak/cefpython/pull/691, which

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Support for Python 3.10

I have a newer pull request for cef v147 at https://github.com/cztomczak/cefpython/pull/691, which

May 25

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Dino, Alireza Kazemi2

7/27/25

Google Maps API latest release and support for nullish coalescing

Hi, In addition to nullish coalescing `a ?? b`, optional chaining `a?.b` and `a?.[prop]` and `a?.(

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Google Maps API latest release and support for nullish coalescing

Hi, In addition to nullish coalescing `a ?? b`, optional chaining `a?.b` and `a?.[prop]` and `a?.(

7/27/25

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HydeNor, Czarek Tomczak.2

2/10/25

Risks on using cefpython3 with Chromium 66

Hi, If you load content that you have control over you should be fine. Here is a more elaborate quote

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Risks on using cefpython3 with Chromium 66

Hi, If you load content that you have control over you should be fine. Here is a more elaborate quote

2/10/25

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Aad Slingerland

9/17/24

Unrecognized feature: 'cross-origin-isolated'

Greetings, I am trying to automate a specific website with CefPython. Wehn I use the website with a

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Unrecognized feature: 'cross-origin-isolated'

Greetings, I am trying to automate a specific website with CefPython. Wehn I use the website with a

9/17/24

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Marijn van Tricht

7/18/24

MIDI / permission manager

I am trying to get midi working from within the browser, but there does not seem to be a way to

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MIDI / permission manager

I am trying to get midi working from within the browser, but there does not seem to be a way to

7/18/24

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Degenerate Tech

6/8/24

kivy android integration

Is it possible to implement webview for Android Python -for -android kivy ?

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kivy android integration

Is it possible to implement webview for Android Python -for -android kivy ?

6/8/24

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2/10/24

Some controls do not operate properly when cefpython3 is running

Python version:3.9.150.1013 Framework:Tkinter.ttk I tried to use cefpython3 to create a browser in

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Some controls do not operate properly when cefpython3 is running

Python version:3.9.150.1013 Framework:Tkinter.ttk I tried to use cefpython3 to create a browser in

2/10/24

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王冠生, Czarek Tomczak.2

1/21/24

How to handle security vulnerabilities (CVE-2022-26809)

How is this related to Chromium and cefpython? On Monday, April 25, 2022 at 10:57:12 AM UTC+2 wilso..

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How to handle security vulnerabilities (CVE-2022-26809)

How is this related to Chromium and cefpython? On Monday, April 25, 2022 at 10:57:12 AM UTC+2 wilso..

1/21/24

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Sridhar Krishnamurthy

9/30/23

Broken links under section 'Chromium switches by category' in master branch

Please see links under https://github.com/cztomczak/cefpython/blob/master/api/CommandLineSwitches.md#

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Broken links under section 'Chromium switches by category' in master branch

Please see links under https://github.com/cztomczak/cefpython/blob/master/api/CommandLineSwitches.md#

9/30/23

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Insertx2k Dev, Anders Petersson4

7/30/23

Old Chromium version in cefpython 66.1

You can check here: https://github.com/cztomczak/cefpython/network Someone else might have more

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Old Chromium version in cefpython 66.1

You can check here: https://github.com/cztomczak/cefpython/network Someone else might have more

7/30/23

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Luca Vagnozzi, Rain h2

3/9/23

Help needed trying to build llcc01's fork (CEF 108) on MacOS

run： python3 ../tools/automate.py --prebuilt-cef python3 ../tools/build.py xxx.xx.xx 在2023年3月7日星期二

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Help needed trying to build llcc01's fork (CEF 108) on MacOS

run： python3 ../tools/automate.py --prebuilt-cef python3 ../tools/build.py xxx.xx.xx 在2023年3月7日星期二

3/9/23

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Nathan Saldanha

2/24/23

Duvida de colocar os arquivos

Como eu coloco os arquivos no plugin cef, meu amigo instalou na GM mas eu queria colocar um arquivo

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Duvida de colocar os arquivos

Como eu coloco os arquivos no plugin cef, meu amigo instalou na GM mas eu queria colocar um arquivo

2/24/23

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10/31/22

Please add support for Python 3.10.8

https://stackoverflow.com/questions/59809785/i-get-a-attributeerror-module-collections-has-no-

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Please add support for Python 3.10.8

https://stackoverflow.com/questions/59809785/i-get-a-attributeerror-module-collections-has-no-

10/31/22

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9/6/22

PDF Plugin - Print Button

I have a PDF Viewer by embedded cefpython3 V66.1 in a PyQt app which generate automatic reports. I

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PDF Plugin - Print Button

I have a PDF Viewer by embedded cefpython3 V66.1 in a PyQt app which generate automatic reports. I

9/6/22

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7/17/22

How does cefpython handle mouse input simulation internally?

Hello, cefpython is a beautiful package! My question is, how does cefpython handle it's simulated

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How does cefpython handle mouse input simulation internally?

Hello, cefpython is a beautiful package! My question is, how does cefpython handle it's simulated

7/17/22

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Buff, … 八月8

7/8/22

icu_util.cc(133) Invalid file descriptor to ICU data received when used pyinstaller

I got the same issue. I solved it by copying "icudtl.dat、locales、cef.pak、cef_100_percent.pak……

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icu_util.cc(133) Invalid file descriptor to ICU data received when used pyinstaller

I got the same issue. I solved it by copying "icudtl.dat、locales、cef.pak、cef_100_percent.pak……

7/8/22

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6/14/22

CEF upgrade request

Hi Czarek, my company is using CEFPython in a python 3.7 software and since few weeks we started need

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CEF upgrade request

Hi Czarek, my company is using CEFPython in a python 3.7 software and since few weeks we started need

6/14/22

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4/8/22

SendProcessMessage infinite loop when LoadUrl is called

Hello, I've experienced a strange behaviour concerning the LoadUrl method. Initially the browser

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SendProcessMessage infinite loop when LoadUrl is called

Hello, I've experienced a strange behaviour concerning the LoadUrl method. Initially the browser

4/8/22

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Jose, Czarek Tomczak.2

3/24/22

Issues on creating multiple browser windows

You can call Initialize, Shutdown and MessageLoop only once during app lifetime. From what I read you

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Issues on creating multiple browser windows

You can call Initialize, Shutdown and MessageLoop only once during app lifetime. From what I read you

3/24/22

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storage accountiii

3/22/22

Version not supported. In the website it is mentioned that 3.9 is supported.

Traceback (most recent call last): File "browser.py", line 11, in <module> from

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Version not supported. In the website it is mentioned that 3.9 is supported.

Traceback (most recent call last): File "browser.py", line 11, in <module> from

3/22/22

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3/21/22

Problems Cefpython3

why don't you have a new version of cefpython3 module for linux with python 3.9 and 3.10? Why

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Problems Cefpython3

why don't you have a new version of cefpython3 module for linux with python 3.9 and 3.10? Why

3/21/22

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2/13/22

Tried to update CEF to 91 but had issued with OSR

Hi, I know that this isn't directly related to the main repository but to a fork of it, which is

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Tried to update CEF to 91 but had issued with OSR

Hi, I know that this isn't directly related to the main repository but to a fork of it, which is

2/13/22

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kn ck, … Mohamed Ashraf5

2/12/22

I have created simple lib to build gui using cefpython and tkinter(container) based on the tkinter-

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I have created simple lib to build gui using cefpython and tkinter(container) based on the tkinter-

2/12/22

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Mohamed Ashraf, Czarek Tomczak.8

2/12/22

blank page when using 127.0.0.1 as a url in cefBrowser

If there is someone has the same problem, make sure you are not using proxy on your machine otherwise

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blank page when using 127.0.0.1 as a url in cefBrowser

If there is someone has the same problem, make sure you are not using proxy on your machine otherwise

2/12/22

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1/23/22

Super simple Kivy (KivyMD) app with CEFPython3

Hello! I'm creating an app with KivyMD and I want to display a simple page with html code in a

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Super simple Kivy (KivyMD) app with CEFPython3

Hello! I'm creating an app with KivyMD and I want to display a simple page with html code in a

1/23/22

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12/10/21

Tab System in Examples?

https://github.com/cztomczak/cefpython/blob/master/examples/tkinter_.py You made that awesome Example

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Tab System in Examples?

https://github.com/cztomczak/cefpython/blob/master/examples/tkinter_.py You made that awesome Example

12/10/21

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vc21, Czarek Tomczak.2

12/6/21

Newer Versions?

There was one company interested in an upgrade two weeks ago, but I haven't heard from them since

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Newer Versions?

There was one company interested in an upgrade two weeks ago, but I haven't heard from them since

12/6/21

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9/17/21

Changing proxy settings dynamically

How can I change the proxy for each browser instance dynamically or before any request made?

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Changing proxy settings dynamically

How can I change the proxy for each browser instance dynamically or before any request made?

9/17/21

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8/28/21

setting a browser window in a frame

Im having some dificulties setting the browser window in a LabelFrame on the right, can someone help?

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setting a browser window in a frame

Im having some dificulties setting the browser window in a LabelFrame on the right, can someone help?

8/28/21

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Mohamed Ashraf, Czarek Tomczak.5

8/22/21

Uploaded file full path

Ok, thanks On Friday, August 20, 2021 at 7:45:51 PM UTC+2 Czarek Tomczak. wrote: When file is dragged

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Uploaded file full path

Ok, thanks On Friday, August 20, 2021 at 7:45:51 PM UTC+2 Czarek Tomczak. wrote: When file is dragged

8/22/21

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