Chrome: use "chrome.storage" in place of "browser.storage" (default) in files: js/home.js js/options.js remove code blocks in manifest.json: "chrome_settings_overrides" : { "homepage": "index.html" }, "applications": { "gecko": { "id": "placidtab2@kylemitchell.me", "strict_min_version": "57.0" } }