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Progressive Web Applications Jennifer Bland

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OpenSource 101 ------ Progressive Web Apps ------ Jennifer Bland 3 Truths 1 Lie •I have visited 82 countries •I did not attend college •I high five’d the Pope •My home is 400 sq ft

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OpenSource 101 ------ Progressive Web Apps ------ Jennifer Bland What is a Progressive Web App?

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OpenSource 101 ------ Progressive Web Apps ------ Jennifer Bland “Progressive Web Apps use modern web capabilities to deliver an app-like user experience.”

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OpenSource 101 ------ Progressive Web Apps ------ Jennifer Bland “So they are just web pages?”

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OpenSource 101 ------ Progressive Web Apps ------ Jennifer Bland YES!

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OpenSource 101 ------ Progressive Web Apps ------ Jennifer Bland Four Requirements • HTTPS • Web app manifest • Service Worker • Responsive design

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OpenSource 101 ------ Progressive Web Apps ------ Jennifer Bland HTTPS • Hyper Text Transfer Protocol Secure • IBDB • Provides security against: • wiretapping • man-in-the-middle attacks

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OpenSource 101 ------ Progressive Web Apps ------ Jennifer Bland Web App Manifest

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OpenSource 101 ------ Progressive Web Apps ------ Jennifer Bland Manifest.json • short_name - name displayed on shortcut created on desktop • name - what is displayed on mobile apps • start_url - starting point of the application

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OpenSource 101 ------ Progressive Web Apps ------ Jennifer Bland Manifest.json • display - defines the developer’s preferred display mode for the web application (standalone | fullscreen)

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OpenSource 101 ------ Progressive Web Apps ------ Jennifer Bland Manifest.json • background_color - expected background color for the web application • theme_color - default theme color for an application • icons - an array of image objects that can serve as app icons in various contexts

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OpenSource 101 ------ Progressive Web Apps ------ Jennifer Bland Manifest.json • orientation - can enforce a specific orientation.

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OpenSource 101 ------ Progressive Web Apps ------ Jennifer Bland Service Worker • Background script to serve network or cached content • What distinguishes a PWA from an HTML website

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Registration

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Installation

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Activation

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Fetch

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OpenSource 101 ------ Progressive Web Apps ------ Jennifer Bland Responsive Design • Can be installed on any device

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OpenSource 101 ------ Progressive Web Apps ------ Jennifer Bland PWA Checklist https://developers.google.com/web/progressive-web-apps/ checklist

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OpenSource 101 ------ Progressive Web Apps ------ Jennifer Bland PWA Performance • Lighthouse

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OpenSource 101 ------ Progressive Web Apps ------ Jennifer Bland Lighthouse SEO • Mobile Friendly • Google Bot crawling • Indexing

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OpenSource 101 ------ Progressive Web Apps ------ Jennifer Bland Lighthouse Best Practices • Framework provides limitations • Polymer.js

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OpenSource 101 ------ Progressive Web Apps ------ Jennifer Bland Lighthouse PWA • Page Load • Service Worker

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OpenSource 101 ------ Progressive Web Apps ------ Jennifer Bland Lighthouse Performance • First Paint • First Interactive

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OpenSource 101 ------ Progressive Web Apps ------ Jennifer Bland Challenges We Faced • Responsive Design • Deep Linking • Multi Browser Support

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OpenSource 101 ------ Progressive Web Apps ------ Jennifer Bland PWA Training • https://developers.google.com/web/ilt/pwa/ Deep Linking • https://www.udacity.com/course/intro-to-progressive-web- apps--ud811

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OpenSource 101 ------ Progressive Web Apps ------ Jennifer Bland 3 Truths 1 Lie •I have visited 82 countries •I did not attend college •I high five’d the Pope •My home is 400 sq ft

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www.jenniferbland.com www.in5days.tech www.medium.com/@ratracegrad www.youtube.com/c/jenniferbland github.com/ratracegrad ratracegrad@gmail.com @ratracegrad