syareez

Open up browser console, for Chrome, hit F12 and copy-paste and enter this

$("a").filter(function(index){return $(this).text()==="unsave"}).click();setTimeout(function(){location.reload();},500);

Repeat until all items are unsaved.

astamicu

UPDATED 22.11.2022

It's been two years since the last update, so here's the updated working script as per the comments below.

Thanks to BryanHaley for this.

setInterval(function () {
    video = document.getElementsByTagName('ytd-playlist-video-renderer')[0];

 video.querySelector('#primary button[aria-label="Action menu"]').click();

elibosley

function archive_all(testOnly) {

    messages = $("._5blh")
    console.log("Found", messages.length, "messages on messsenger.");
    if (!testOnly) {
        for (i = 0; i < messages.length; i++) {
            try {
                messages[i].click()// open dialog
                $("li:contains('Archive')").last().click()

nschneid

{
"translatorID":"04623cf0-313c-11df-9aae-0800200c9a66",
"translatorType":2,
"label":"ZotSelect Link",
"creator":"Scott Campbell, Avram Lyon, Nathan Schneider",
"target":"html",
"minVersion":"2.0",
"maxVersion":"",
"priority":200,
"inRepository":false,