Userscript to use Local JP Serif font on all websites in Android browser for Android 9+.
// ==UserScript==
// @name Font substitution: Noto Serif CJK JP using local fonts for Android9+
// @name:ja フォント置換：Noto Serif CJK JP Android9以降搭載のローカルフォント
// @namespace https://github.com/yzrsng
// @description Userscript to use Local JP Serif font on all websites in Android browser for Android 9+.
// @description:ja ウェブページでローカルの日本語明朝体フォントを使うユーザースクリプト。Android 9以降用。
// @version 0.1.20240223.3
// @license CC0-1.0
// @include http://*
// @include https://*
// @match *://*/*
// @grant none
// ==/UserScript==
(function() {
'use strict';
const setSerifFont = () => {
// skip Misskey, Calckey, FoundKey?
const applicationNameElm = document.head.querySelector('meta[name="application-name"][content]');
if (applicationNameElm) {
const aName = applicationNameElm.content;
const misskey_forks = [
"Misskey",
"Calckey",
"FoundKey",
"Firefish",
"Iceshrimp",
"Sharkey",
"CherryPick",
"Tanukey",
];
for (const fork of misskey_forks) {
if (aName === fork) return;
}
}
const newFontFamilyName = 'Noto Serif CJK JP';
// const oldFontFamilyNames = [
// "Roboto",
// "Google Sans",
// "Droid Sans",
// "MotoyaLMaru",
// "MotoyaLCedar",
// "Noto Sans JP",
// "Noto Sans CJK JP",
// "SEC CJK JP",
// "Droid Sans Japanese"
// ]
const font = new FontFace(newFontFamilyName, `local(${newFontFamilyName})`);
font.load().then(() => {document.fonts.add(font)});
const myHead = document.getElementsByTagName('head')[0];
const myCss = document.createElement('style');
myCss.id = 'set_serif_font_style';
myCss.insertAdjacentHTML('beforeend', `
@font-face {font-family: ${newFontFamilyName}; src: local(${newFontFamilyName});}
@font-face {font-family: "Roboto"; src: local(${newFontFamilyName});}
@font-face {font-family: "Google Sans"; src: local(${newFontFamilyName});}
@font-face {font-family: "Droid Sans"; src: local(${newFontFamilyName});}
@font-face {font-family: "MotoyaLMaru"; src: local(${newFontFamilyName});}
@font-face {font-family: "MotoyaLCedar"; src: local(${newFontFamilyName});}
@font-face {font-family: "Noto Sans JP"; src: local(${newFontFamilyName});}
@font-face {font-family: "Noto Sans CJK JP"; src: local(${newFontFamilyName});}
@font-face {font-family: "SEC CJK JP"; src: local(${newFontFamilyName});}
@font-face {font-family: "Droid Sans Japanese"; src: local(${newFontFamilyName});}
*:not(pre):not(span):not(code):not(samp){font-family:'USERFONT-${newFontFamilyName}', Charis SIL Compact, Noto Serif CJK JP, Noto Serif, Droid Serif, serif;}
`);
myHead.appendChild(myCss);
};
if (document.readyState === "loading") {
document.addEventListener("DOMContentLoaded", setSerifFont);
} else {
setSerifFont();
}
})();