PWA beyond theory - How to create your progressive web app

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PWA BEYOND THEORY How to create your progressive web app

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13% 87% Mobile web Apps Source: comScore Mobile Metrix, U.S., Age 18+, June 2015

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80% of time is spent on 3 apps Source: comScore Mobile Metrix, U.S., Age 18+, June 2015

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ZERO number of apps the average user installs per month Source: comScore Mobile Metrix, U.S., Age 18+, June 2015

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New web features ● Push Messages ● Offline storage ● Audio & Video Capture ● Recording Media ● Geolocation ● Web Bluetooth API ● More: https://whatwebcando.today

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WHAT IS A PWA? it's a website that behaves like an app

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WHAT IS A PWA? new level of caring about the quality of your end-to-end user experience

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Starbucks https://app.starbucks.com

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The Washington Post https://www.washingtonpost.com/pwa

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Twitter https://mobile.twitter.com

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PWA aspects ● Site works cross-browser ● Pages are responsive on tablets & mobile devices ● First load fast even on 3G ● All app URLs load while offline ● Metadata provided for Add to Home screen ● Site is served over HTTPS

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✓ site works cross-browser

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✓ responsive ✓ first load fast

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✓ all app URLs load while offline

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SERVICE WORKER advanced offline experiences

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Web server

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Service worker Client side proxy (wrote in JavaScript) Cache Web server

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SERVICE WORKER it's for the SECOND loading

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implementing a Service Worker

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registering a Service Worker

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adding install event

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preload resources

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activate event

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almost finishing

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controlling the loading

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cache strategy network, otherwise use the cache

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the offline cookbook by Jake Archibald https://developers.google.com/web/fundamentals/instant-and-offline/offline-cookbook/

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✓ add to home screen

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{ "name": "Currency Converter", "short_name": "CConverter", "icons": [{ "src": "icon-48x48.png", "sizes": "48x48", "type": "image/png" }, {...}], "start_url": "/index.html", "display": "standalone", "orientation": "portrait", "background_color": "#06f8c5", "theme_color": "#06f8c5" }

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manifest.json { "name": "Currency Converter", "short_name": "CConverter", "icons": [{ "src": "icon-48x48.png", "sizes": "48x48", "type": "image/png" }, {...}], "start_url": "/index.html", "display": "standalone", "orientation": "portrait", "background_color": "#06f8c5", "theme_color": "#06f8c5" }

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manifest.json { "name": "The Washington Post", "short_name": "Wash Post", "icons": [{ "src": "icon-48x48.png", "sizes": "48x48", "type": "image/png" }, {...}], "start_url": "/index.html", "display": "standalone", "orientation": "portrait", "background_color": "#06f8c5", "theme_color": "#06f8c5" }

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✓ safe

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keeping users safe is hugely important ● Reliability: Is this the site that the user expects? ● Integrity: Has anyone changed this content? ● Privacy: Can anyone monitor my navigation?

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Let’s Encrypt is a trademark of the Internet Security Research Group.

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that's all :D

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last considerations ● Storage is not required ● Easy to share (conversion flow) ● Always updated ● Lower costs compared to native app development.

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Lighthouse

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use your creativity ● https://developers.google.com/web/progressive-web-apps/checklist ● https://whatwebcando.today

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try it: http://bit.ly/pwacconverter

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the code is available on github: https://github.com/amandavilela/currencyconverter

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Obrigada! Amanda Vilela amandavilela.com