Pixiv Image Size Fitting

pixiv の原寸画像が表示領域に収まるように画像サイズを変更

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

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

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

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

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

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name        Pixiv Image Size Fitting
// @namespace   http://userscripts.org/users/121129
// @description pixiv の原寸画像が表示領域に収まるように画像サイズを変更
// @include     *://www.pixiv.net/*
// @version     12
// @grant       none
// @license     MIT
// @noframes
// ==/UserScript==

;(function() {
  'use strict'
  function hasModifiersKey(event) {
    return event.altKey || event.ctrlKey || event.metaKey || event.shiftKey
  }
  function addStyle() {
    const style = document.createElement('style')
    style.id = 'PixivImageSizeFittingStyle'
    style.textContent = `
      body > [role="presentation"] > div > div {
        overflow: hidden;
      }
      body > [role="presentation"] img {
        max-height: 100vh;
        max-width: 100vw;
      }
    `
    document.head.appendChild(style)
  }
  function keydown(e) {
    if (hasModifiersKey(e)) return
    if (!['x', 'i'].includes(e.key)) return
    const style = document.getElementById('PixivImageSizeFittingStyle')
    if (style) {
      style.remove()
    } else {
      addStyle()
    }
  }
  function main() {
    addStyle()
    window.addEventListener('keydown', keydown)
  }
  main()
})()