No Referrer

Disable HTTP referer by adding rel="noreferrer". This prevents the destination site from receiving what URL the user came from. Press Command + Shift + R to toggle Referrer Policy.

目前為 2023-05-10 提交的版本,檢視 最新版本

您需要先安裝使用者腳本管理器擴展,如 TampermonkeyGreasemonkeyViolentmonkey 之後才能安裝該腳本。

You will need to install an extension such as Tampermonkey to install this script.

您需要先安裝使用者腳本管理器擴充功能,如 TampermonkeyViolentmonkey 後才能安裝該腳本。

您需要先安裝使用者腳本管理器擴充功能,如 TampermonkeyUserscripts 後才能安裝該腳本。

你需要先安裝一款使用者腳本管理器擴展,比如 Tampermonkey,才能安裝此腳本

您需要先安裝使用者腳本管理器擴充功能後才能安裝該腳本。

(我已經安裝了使用者腳本管理器,讓我安裝!)

你需要先安裝一款使用者樣式管理器擴展,比如 Stylus,才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展,比如 Stylus,才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展,比如 Stylus,才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展後才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展後才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展後才能安裝此樣式

(我已經安裝了使用者樣式管理器,讓我安裝!)

// ==UserScript== 
// @name        No Referrer
// @description Disable HTTP referer by adding rel="noreferrer". This prevents the destination site from receiving what URL the user came from. Press Command + Shift + R to toggle Referrer Policy.
// @author      Schimon Jehudah, Adv.
// @namespace   i2p.schimon.noreferrer
// @homepageURL https://greasyfork.org/en/scripts/465950-no-referrer
// @supportURL  https://greasyfork.org/en/scripts/465950-no-referrer/feedback
// @copyright   2023, Schimon Jehudah (http://schimon.i2p)
// @license     MIT; https://opensource.org/licenses/MIT
// @include     *
// @exclude     devtools://*
// @version     23.04.25
// @run-at      document-end
// @icon        data:image/svg+xml;base64,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
// ==/UserScript==

/*

## 🔁 Disable HTTP referer (i.e. referrer)
### _Prevent sending HTTP "referer" requests to destination website._

This userscript adds `rel="noreferrer"` to every page link.

_"Links with `rel="noreferrer"` set do not send the request's "referrer" header. This prevents the destination site from seeing what URL the user came from."_

---

#### Recommended Userscripts

#### 🔗️ [Clean URL Improved](https://openuserjs.org/scripts/sjehuda/Clean_URL_Improved)
Remove needless parameters from a given URL and correct it to a cleaner one.

---

#### Please visit our counterparts

#### Web Extensions

#### [Auto Referer](https://github.com/garywill/autoReferer)
Browser addon. Control referer to protect privacy and not break web. The addon (maybe the only one?) that deals with browser's `document.referrer` bug.

#### [Referer Modifier](https://github.com/airtower-luna/referer-mod)
Referer Modifier is a Web Extension for Firefox to modify the Referer header in HTTP requests, and the Javascript `document.referrer` property to match.

#### [Smart Referer](https://gitlab.com/smart-referrer)
Automatically hide HTTP and JavaScript Referer for cross-domain requests.

#### [NoRef: Open without Referer](https://addons.mozilla.org/firefox/addon/noref-open-without-referer/)
Adds a context menu option to open a link in a new tab without sending the HTTP referer information. A bare-bones replacement for the legacy addon "No-Referer" by Dor. Simply copies the selected link and opens a new tab to the destination.

#### [Referer Control](https://addons.mozilla.org/firefox/addon/referercontrol/)
Control the HTTP Referer on a per-site basis.

#### [pximg referer fixer](https://github.com/maple3142/pximg-referer)
Add Referer headers when requesting i.pximg.net in order to get some pximg images displayed correctly.

---

#### Upcoming changes
 * ~~Add an event listener~~;
 * ~~Add hotkey to toggle referer~~;
 * Consideration http://microformats.org/wiki/rel-me;
 * Use `location.origin`, if at all possible. It might be useful;
 * Use `origin` for element `<link/>`;

---

### <!-- img src="https://raw.githubusercontent.com/KDE/falkon/master/logo.png" height="30" alt="Falkon" title="Download Falkon Browser"/ --> 🦅 Designed for <span style='color:MediumPurple'>[Falkon](https://www.falkon.org/) web browser</span>‬<!-- ![Falkon Web Browser](https://raw.githubusercontent.com/KDE/falkon/master/logo.png "Falkon Web Browser") -->

*/

var namespace = 'i2p-schimon-noreferrer';
document.addEventListener('keyup', hotkey, false);

function hotkey(e) {
  // set hotkey Ctrl + Shift + 5
  //if (e.ctrlKey && e.shiftKey && e.which == 53) {
  // set hotkey Ctrl + Shift + R
  if (e.metaKey && e.shiftKey && e.which == 82) {
    toggleNoReferrer();
  }
}

function toggleNoReferrer() {
  if (document.querySelector(namespace)) {
    appendNoReferrer();
    document.querySelector(namespace).remove();
  } else {
    removeNoReferrer();
    warningBar();
  }
}

function appendNoReferrer() {
  let elements = ['area', 'form'];
  for (let i = 0; i < elements.length; i++) {
    for (const element of document.querySelectorAll(elements[i])) {
      element.rel = 'noreferrer';
    }
  }
  for (const element of document.querySelectorAll('link')) {
    element.referrerPolicy = 'no-referrer';
  }
  for (let i = 0; i < elements.length; i++) {
    for (const element of document.querySelectorAll('a[href]')) {
      // TODO CSS Selector to select a[href] which does
      // not start with hash, instead of "if" statement
      if (!element.href.startsWith(element.baseURI + '#')) {
        element.rel = 'noreferrer';
      }
    }
  }
  
  // Event delegation works and requires JS enabled
  document.body.addEventListener ("click", function(e) {
    if (e.target && e.target.nodeName == "A" && e.target.href) {
      if (!e.target.href.startsWith(e.baseURI + '#') ||
          !document.querySelector(namespace)) { // TODO Test
        e.target.rel = 'noreferrer';
      }
    }
  });
}

function removeNoReferrer() {
  for (const element of document.querySelectorAll('[rel="noreferrer"]')) {
    element.removeAttribute('rel');
  }
  for (const element of document.querySelectorAll('[referrerpolicy="no-referrer"]')) {
    element.removeAttribute('referrerpolicy');
  }
}

function warningBar() {
  let bar = document.createElement(namespace);
  document.body.append(bar);
  bar.innerHTML = '<b>WARNING! Referrer Policy has been <u>temporarily</u> enabled;<!-- br --> Reload page or click <code style="color: navajowhite;background: black;border-radius: 1em;padding: 3px;font-family: monospace;font-size: smaller;">Command</code> + <code style="color: navajowhite;background: black;border-radius: 1em;padding: 3px;font-family: monospace;font-size: smaller;">Shift</code> + <code style="color: navajowhite;background: black;border-radius: 1em;padding: 3px;font-family: monospace;font-size: smaller;">R</code> to restore privacy mode. (i.e. no-referrer)</b>'; // 🫵
  bar.title = 'Click to reload';
  //bar.title = 'Restore privacy mode by 𝐂𝐨𝐦𝐦𝐚𝐧𝐝 + 𝐒𝐡𝐢𝐟𝐭 + 𝐑 or click this bar to reload page.';
  bar.id = namespace;
  bar.style.backgroundColor = 'indianred'; // #2c3e50 coral
  bar.style.color = 'white'; // #eee navajowhite
  bar.style.right = 0;
  bar.style.left = 0;
  bar.style.top = 0;
  bar.style.zIndex = 10000000000;
  bar.style.padding = '6px'; //13px //15px //11px //9px //3px //1px
  bar.style.position = 'fixed';
  bar.style.textAlign = 'center'; // justify
  bar.style.direction = 'ltr';
  // set bar behaviour
  bar.onclick = () => {
    bar.style.display = 'none';
    location.reload();
  };
}

(function appendNoReferrerToLink() {
  // Add element <link/> with rel="noreferrer".
  // Some consider <link rel="noreferrer"/> as invalid.
  let link = document.createElement('link');
  document.head.append(link);
  link.referrerPolicy = 'no-referrer';
  link.rel = 'noreferrer';
})();

appendNoReferrer();