A simple unix timestamp to readable date converter extension for your browser.
Once you have installed the extension open up any web page and click the stampy icon. Any unix timestamps will be converted into date strings for you. For instance the text 1574266854 will become 11/20/2019 @ 4:20:54 PM (UTC) or similar, depending on your browser's locale settings. To clear any modifications this extension makes just reload the page.