 All right, what's up everybody? It's Eric Bidleman here backstage with Paul Irish from the grud dev tools team Just came off stage presented on what? Well, it's debugging the web. We were talking about all the cool new stuff and dev tools from debugging Javascript To authoring CSS and bunch of auditing Good stuff stuff. I got really excited about was diffing right diffing in CSS like what is your app actually using? Two nice things in here So you can not only if you make changes like see exactly what happened But then like you just want to know across all your CSS like what is being used like on the page You can say start recording do whatever you want Finish recording and then we will like point out the CSS that Was not used on the page and be like this stuff there might want to I know when I write right after a lot of CSS like keeps appending and yeah, it's always this is like You're so scared you talked a little bit about lighthouse and kind of a new thing in DevTools for lighthouse Can you kind of describe and hint to our users what that that's all about? So lighthouse does it's a kind of a modular portable engine for analyzing pages Finding out what best practices they could be adopting the things that are there and so good Measuring performance all this stuff, right? And it's available in a number of different places Chrome extension node module command line interface And what it showed was actually an integration inside the Chrome DevTools So a new panel kind of a revision of the audits panel and it's like has lighthouse in it It is run it and the nice thing that I'm super excited about is that the lighthouse that's in it Is just sitting off on github and all of our like Everybody in the community can come by on github, you know make commits and like they're gonna be in DevTools pretty soon So send us those pull request We'd love to have your feedback and it's part of DevTools now, which is really huge So Paul you've been around and the web for a while like kind of what gets you excited about the web these days I mean, it's it's been you know through trials and tribulations, but why do you get out of bed? Yeah, yeah, I mean I I love seeing a fantastically developed site like I and I just look for speed You know, I'm I'm very much focused on everyone doing what they can to make sure that that their experience of loading The site is fast and just enjoying a little beautiful. So Making the web fast for everybody is is all about and we can do that with the DevTools Thank you so much Paul everybody join us on Twitter join us on the YouTube channel Chrome Dev Summit 2016 Oh, yeah, thanks, buddy. Yeah get chromium up there