Directly calculate pp for a beatmap in your browser.
ezpp! allows you to calculate the osu! pp values for a given beatmap directly in the browser. Just go to a beatmap's page, unranked or not, and click the extension.
The extension works on both the new (new.ppy.sh) and the old (osu.ppy.sh) site. No login or API key required.
This extension is open source and can be found here: https://github.com/oamaok/ezpp