Export Current Tab Titles/URLs to CSV - Script for Firefox's Browser Console

export-firefox-tab-titles-urls.js

/* Export Current Tab Titles/URLs to CSV - Script for the Browser Console
	
	   NOTE: BEFORE RUNNING THIS SCRIPT, CHECK THIS SETTING:
	   Type or paste about:config into the address bar and press Enter
	   Click the button promising to be careful
	   In the search box type devt and pause while Firefox filters the list
	   If devtools.chrome.enabled is false, double-click it to toggle to true
	
	Paste this entire script into the command line at the bottom of the Browser Console (Windows: Ctrl+Shift+j)
	Then press Enter to run the script. A save dialog should promptly open.
*/
ssj = JSON.parse(SessionStore.getBrowserState()); // get Current Session State
if(ssj && ssj.windows && ssj.windows.length > 0){
	// Build tab list
	var out = '"Win","Tab","Title","URL"\n';
	var wins = ssj.windows;
	for (var w=0; w<wins.length; w++){
		var tabs = wins[w].tabs;
		for (t=0; t<tabs.length; t++){
			var tab = tabs[t].entries[tabs[t].index - 1];
			out += (w+1) + ',' + (t+1) + ',"' + (tab.title ? tab.title.replace(/\"/g, "'") : "") + '","' + tab.url + '"\n';
		}
	}
	// Set up Save As dialog
	var fp = Components.classes["@mozilla.org/filepicker;1"].createInstance(Components.interfaces.nsIFilePicker);
	try { // Fx125+
		fp.init(window.browsingContext, 'Open File', Components.interfaces.nsIFilePicker.modeSave);
	} catch(e) { // Fx124 and earlier
		fp.init(window, 'Open File', Components.interfaces.nsIFilePicker.modeSave);
	}
	fp.appendFilter("CSV Files", "*.csv");
	fp.defaultString = "sessionstore-current-tabs.csv";
	// Call Save As dialog
	fp.open((aResult) => {
		if (aResult == Components.interfaces.nsIFilePicker.returnOK ||
			aResult == Components.interfaces.nsIFilePicker.returnReplace) {
			try {
				IOUtils.writeUTF8(fp.file.path, out);
				alert('Look for ' + fp.file.path);
			} catch (err) {
				alert(err);
			}
		} else {
			alert('Okay, not saving');
		}
	});
} else {
	alert('Could not get session data!');
}

New error: Uncaught NS_ERROR_XPC_BAD_CONVERT_JS: Could not convert JavaScript argument arg 0 [nsIFilePicker.init]

Firefox 147.0.1 (64-bit), NixOS.

As a workaround, just add console.log(out) right before // Set up Save As dialog, and copy the message output.

New error: Uncaught NS_ERROR_XPC_BAD_CONVERT_JS: Could not convert JavaScript argument arg 0 [nsIFilePicker.init]

Firefox 147.0.1 (64-bit), NixOS.

I can't replicate the error on 147.0.1/Windows, but I'll watch for more reports.

Oh nevermind, it didn't work on rafal's version, works fine on the main one.