23 |
24 |
29 |
32 | 33 | What do these options mean? 34 | 35 |
36 |├── DOCUMENTATION.md
├── LICENSE
├── README.md
├── html
└── options.html
├── img
└── icon128.png
├── js
├── background.js
└── options.js
└── manifest.json
/DOCUMENTATION.md:
--------------------------------------------------------------------------------
1 | ## Documentation
2 |
3 | ### What do the settings mean and do?
4 |
5 | **WebRTC IP handling policy**
6 |
7 | Setting | Effect
8 | --- | ---
9 | `Use the default public interface only` | Send WebRTC traffic via the default public network adapter to the Internet. This will be the VPN adapter for system-VPN users.
10 | `Use the default public interface and private interface` | Same as above, except allow WebRTC traffic through the default private interface to your local network as well.
11 | `Disable non-proxied UDP (force proxy)` | Force the use of a proxy, and only allow WebRTC traffic over UDP proxies. This will effectively disable WebRTC communication for most users (depending on UDP proxy usage).
12 |
13 | ---
14 | ### I'm using a VPN or proxy, how do I prevent WebRTC leaks?
15 |
16 | Seriously, how do I do this?
17 |
18 | ---
19 | **I'm using a VPN that I installed software for, or configured in my operating system.**
20 |
21 | In your case, the default settings should prevent leaks.
22 |
23 | *WebRTC IP handling policy* is set to `Use the default public interface only` by default.
24 |
25 | ---
26 | **I'm using a VPN in the form of a browser extension.**
27 |
28 | These VPNs are considered proxies in Chrome.
29 |
30 | Set *WebRTC IP handling policy* to `Disable non-proxied UDP (force proxy)`.
31 |
32 | ---
33 | **I'm using the built-in VPN feature in Opera.**
34 |
35 | Set *WebRTC IP handling policy* to `Disable non-proxied UDP (force proxy)`.
36 |
37 | ---
38 | **I'm using a proxy.**
39 |
40 | Set *WebRTC IP handling policy* to `Disable non-proxied UDP (force proxy)`.
41 |
42 | ---
43 | **I'm not using a proxy or a VPN, but I want to conceal my local IP address.**
44 |
45 | The default settings will prevent local leaks.
46 |
47 | *WebRTC IP handling policy* is set to `Use the default public interface only` by default.
48 |
49 | ---
50 | **I don't want to prevent leaks.**
51 |
52 | Remove the extension.
53 |
54 | ---
55 | **I don't know what leaks are.**
56 |
57 | In this context leaks refer to the visibility of your personally identifiable IP address, even when using a VPN or proxy. For users with reasons to be concerned about privacy, such as Facebook users in China or anyone in the United States.
58 |
59 | ---
60 | ### How do I test for WebRTC leaks?
61 |
62 | GitHub developer [diafygi](https://github.com/diafygi) has developed an [easy-to-use test](https://diafygi.github.io/webrtc-ips).
63 |
64 | After you've set and applied a setting in WebRTC Leak Prevent, open or refresh diafygi's test to verify the effectiveness of the setting.
65 |
66 | A WebRTC leak is occuring if you're using a VPN or proxy and your ISP-provided public IP address is visible in the test. You can use one of many tools [like this](http://whatismyipaddress.com/ip/8.8.8.8) to check an IP address.
67 |
68 | ---
69 | ### What is 'Incognito protection'?
70 |
71 |
72 |
73 | By default, Chrome does not allow extensions to run in [Incognito mode](https://support.google.com/chrome/answer/95464). WebRTC Leak Prevent therefore cannot prevent WebRTC leaks in Incognito mode by default.
74 |
75 | To enable Incognito protection check 'Allow in incognito' under WebRTC Leak Prevent in the Chrome Extension menu.
76 |
77 | If you're okay with the extension not running in Incognito mode, or you explicitly don't want it to, you can ignore the warning message.
78 |
--------------------------------------------------------------------------------
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/README.md:
--------------------------------------------------------------------------------
1 | ## WebRTC Leak Prevent
2 | **Version 2.0.0 | May 12 2025**
3 |
4 | WebRTC Leak Prevent provides user control over WebRTC privacy settings in Chromium that have no native GUI. The intended use of the extension is to prevent [WebRTC leaks](https://diafygi.github.io/webrtc-ips/).
5 |
6 | The only required permissions are 'privacy' and 'storage'.
7 |
8 | #### How it works
9 |
10 | In **Chromium version 48+**, the extension provides user control over `webRTCIPHandlingPolicy`, defaulting to `default_public_interface_only`.
11 |
12 | #### Download
13 |
14 | [Chrome Web Store](https://chrome.google.com/webstore/detail/webrtc-leak-prevent/eiadekoaikejlgdbkbdfeijglgfdalml)
15 |
16 | ---
17 |
18 | #### Privacy
19 |
20 | WebRTC Leak Prevent does not collect any user data.
21 |
22 | The extension is hosted entirely on GitHub and the Chrome Web Store. These services may independently collect user data.
23 |
24 | #### License
25 |
26 | Copyright 2025
27 |
28 | Licensed under the Apache License, Version 2.0 (the "License");
29 | you may not use this file except in compliance with the License.
30 | You may obtain a copy of the License at
31 |
32 | https://www.apache.org/licenses/LICENSE-2.0
33 |
34 | Unless required by applicable law or agreed to in writing, software
35 | distributed under the License is distributed on an "AS IS" BASIS,
36 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
37 | See the License for the specific language governing permissions and
38 | limitations under the License.
39 |
--------------------------------------------------------------------------------
/html/options.html:
--------------------------------------------------------------------------------
1 |
2 |
3 |
23 |
24 |
29 |
32 | 33 | What do these options mean? 34 | 35 |
36 |Enabled
41 |42 | Not enabled. 43 | 44 | Learn more. 45 | 46 |
47 |50 | GitHub source 51 |
52 | 53 | 54 | 55 | 56 | -------------------------------------------------------------------------------- /img/icon128.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/a449707101729771095/WebRTC-Leak-Prevent/35312e08a122041ec8ecb749ecc8cc91f984cec2/img/icon128.png -------------------------------------------------------------------------------- /js/background.js: -------------------------------------------------------------------------------- 1 | chrome.runtime.onInstalled.addListener(() => { 2 | // Open the options page upon install 3 | chrome.runtime.openOptionsPage(); 4 | 5 | // Set default WebRTC handling policy if not already set 6 | chrome.storage.local.get("rtcIPHandling", (items) => { 7 | if (items.rtcIPHandling === undefined) { 8 | chrome.storage.local.set({ rtcIPHandling: "default_public_interface_only" }, () => { 9 | chrome.privacy.network.webRTCIPHandlingPolicy.set({ 10 | value: "default_public_interface_only" 11 | }); 12 | }); 13 | } 14 | }); 15 | }); 16 | 17 | chrome.action.onClicked.addListener(() => { 18 | chrome.runtime.openOptionsPage(); 19 | }) 20 | -------------------------------------------------------------------------------- /js/options.js: -------------------------------------------------------------------------------- 1 | /* Check if extension is allowed in Incognito mode */ 2 | function incognitoAllowedCheck() { 3 | chrome.extension.isAllowedIncognitoAccess((state) => { 4 | const incognitoAllowed = document.getElementById('incognitoAllowed'); 5 | const incognitoDisallowed = document.getElementById('incognitoDisallowed'); 6 | 7 | if (state) { 8 | incognitoDisallowed.style.display = 'none'; 9 | } else { 10 | incognitoAllowed.style.display = 'none'; 11 | } 12 | }); 13 | } 14 | 15 | /* Show main content and check incognito status */ 16 | function displayContent() { 17 | document.getElementById('content').style.display = 'block'; 18 | incognitoAllowedCheck(); 19 | } 20 | 21 | /* Save option and apply WebRTC policy */ 22 | function saveOptions() { 23 | const policy = document.getElementById('policy').value; 24 | 25 | chrome.storage.local.set({ rtcIPHandling: policy }, () => { 26 | chrome.privacy.network.webRTCIPHandlingPolicy.set({ value: policy }); 27 | }); 28 | } 29 | 30 | /* Load stored option into UI */ 31 | function restoreOptions() { 32 | chrome.storage.local.get({ rtcIPHandling: 'default_public_interface_only' }, (items) => { 33 | document.getElementById('policy').value = items.rtcIPHandling; 34 | }); 35 | } 36 | 37 | /* Event listeners */ 38 | document.addEventListener('DOMContentLoaded', () => { 39 | displayContent(); 40 | restoreOptions(); 41 | 42 | document.getElementById('policy').addEventListener('change', saveOptions); 43 | }); 44 | -------------------------------------------------------------------------------- /manifest.json: -------------------------------------------------------------------------------- 1 | { 2 | "manifest_version": 3, 3 | "name": "WebRTC Leak Prevent", 4 | "version": "2.0.0", 5 | "description": "Prevent WebRTC leaks using the official API.", 6 | "icons": { 7 | "128": "/img/icon128.png" 8 | }, 9 | "action": { 10 | "default_title": "Open options.", 11 | "default_popup": "/html/options.html" 12 | }, 13 | "options_ui": { 14 | "page": "/html/options.html", 15 | "open_in_tab": false 16 | }, 17 | "background": { 18 | "service_worker": "js/background.js" 19 | }, 20 | "permissions": ["storage", "privacy"], 21 | "host_permissions": [], 22 | "minimum_chrome_version": "88" 23 | } 24 | --------------------------------------------------------------------------------