var app = {};

app.version = function () {return chrome.runtime.getManifest().version};
app.homepage = function () {return chrome.runtime.getManifest().homepage_url};
app.tab = {"open": function (url) {chrome.tabs.create({"url": url, "active": true})}};
chrome.runtime.setUninstallURL(app.homepage() + "?v=" + app.version() + "&type=uninstall", function () {});

chrome.runtime.onInstalled.addListener(function (e) {
  window.setTimeout(function () {
    if (e.reason === "install") {
      app.tab.open(app.homepage() + "?v=" + app.version() + "&type=" + e.reason);
    }
  }, 3000);
});

app.mhtml = function () {
  chrome.tabs.query({"active": true, "currentWindow": true}, (tabs) => {
    if (tabs && tabs.length) {
      if (tabs[0] && tabs[0].url && tabs[0].url.indexOf("http") === 0) {
        chrome.pageCapture.saveAsMHTML({"tabId": tabs[0].id}, (mhtml) => {
          var lastError = chrome.runtime.lastError;
          if (mhtml && lastError === undefined) {
            var blob = new Blob([mhtml], {"type": "text/mhtml"});
            var url = URL.createObjectURL(blob);
            var hostname = (new URL(tabs[0].url)).hostname;
            var filename = hostname.replace("www.", '').split('.')[0];
            if (url && filename) {
              var options = {"url": url, "filename": (filename + ".mhtml")};
              chrome.downloads.download(options, () => {URL.revokeObjectURL(url)});
            }
          }
        });
      }
    }
  });
};

chrome.browserAction.onClicked.addListener(app.mhtml);
chrome.contextMenus.create({"contexts": ["page"], "title": "Save as MHTML", "onclick": app.mhtml});

这是crx插件，电脑端用的，手机端不兼容，帮修改如图这样，谢谢啦