源码安装
max / 短视频去水印下载:支持抖音,快手

// ==UserScript==
// @name         短视频去水印下载:支持抖音,快手
// @namespace    http://tampermonkey.net/
// @version      1.0
// @description  短视频去水印下载(无限制下载)支持:抖音、快手
// @author       max
// @include      *iesdouyin.com/*
// @include      *://video.kuaishou.com/*
// @license MIT
// @grant GM_download
// ==/UserScript==
 
const MobileUA =
  "Mozilla/5.0 (iPhone; CPU iPhone OS 13_2_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.0.3 Mobile/15E148 Safari/604.1";
 
function main() {
  const match = location.href.match(/share\/video\/(\d*)/);
  const id = match[1];
  if (!id) return;
 
  fetch("https://www.iesdouyin.com/web/api/v2/aweme/iteminfo/?item_ids=" + id)
    .then((res) => res.json())
    .then((json) => {
      console.log("[DouyinDownloader]", json);
      const info = json.item_list[0];
      const url = info.video.play_addr.url_list[0].replace("playwm", "play");
      const file = (info.desc || id) + ".mp4";
      addDownloadButton(url, file);
    });
}
 
function addDownloadButton(url, file) {
 
  const buttonEl = document.createElement("button");
  buttonEl.textContent = "Download";
  document.body.appendChild(buttonEl);
 
  buttonEl.style.position = 'fixed'
  buttonEl.style.zIndex = '10000'
  buttonEl.style.top = '0'
  buttonEl.style.left = '0'
  buttonEl.style.width = '100%'
  buttonEl.style.height = '60px'
 
  buttonEl.addEventListener("click", () => {
    GM_download({
      url: url,
      headers: {
        "user-agent": MobileUA,
      },
      name: file,
    });
  });
}
 
main();