Planning Your Progressive Web App

Planning Your Progressive Web App

Five factors to consider as you plan and build your progressive web app.

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Jason Grigsby

April 08, 2019
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  1. Planning Your Progressive Web App

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  4. Original Definition by Frances Berriman and Alex Russell Responsive 


    Fit any form factor. RWD FTW! Connectivity Independent
 Offline features thanks to service workers. App-like interactions
 App shell for apps navigation. Fresh
 Up-to-date thanks to service workers. Safe
 Served on HTTPS. Discoverable
 Manifest files identify them as apps. Re-engageable
 Push notifications bring people back to apps. Installable
 Can be installed to the home screen w/o app stores. Linkable
 Still part of the web—URLs still work. Progressive
 Use progressive enhancement for better experience.
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  11. https://docs.google.com/presentation/d/14fBthXt3i3nRbi7vUrVXj3CjI1ILcYlKDAUMf1LXWpY/edit#slide=id.p22

  12. https://docs.google.com/presentation/d/14fBthXt3i3nRbi7vUrVXj3CjI1ILcYlKDAUMf1LXWpY/edit#slide=id.p22

  13. PWA is a website that has been enhanced with: {manifest}

    https service worker Credit to Jeremy Keith for explicitly declaring a technical definition: https://adactio.com/journal/13098
  14. Progressive web apps allow us to build experiences that previously

    required a native application.
  15. Offline Interactivity Cache for Perf Only Offline Native App Stores

    Website with Perf Improvements Full Screen, App Shell New APIs No Add to Home Screen Basic PWA Feels Like An App Installation and Discovery No Push Notifications Personalized and Integrated Push Push Notifications Beyond PWAs
  16. Making it feel like an app

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  18. Like obscenity and brunch, web apps can be described but

    not defined. —Jeremy Keith, By any other name
  19. Make it look native? https://material.io/guidelines/platforms/platform-adaptation.html#platform-adaptation-when-to-adapt

  20. Do you switch design language between platforms? Material Design iOS

    Design
  21. How many platforms will you adapt to?

  22. What about desktop browsers?

  23. Will you jump every time the platform changes?

  24. Define your own design and be consistent. Tripcase maintains same

    design across platforms.
  25. More immersive experience https://www.flickr.com/photos/taylorherringpr/33138630633/in/album-72157679764685922/

  26. Manifest file display options display: "standalone" display: "fullscreen" display: "browser"

    display: “minimal-ui”
  27. We’re spoiled by our browsers

  28. The warm comforts of the browser

  29. The warm comforts of the browser navigation bar status bar

    address bar
  30. The warm comforts of the browser info, refresh, download tabs

    downloads find in page
  31. The warm comforts of the browser sharing printing email

  32. Roughing it in app land

  33. Adding a back button is harder than it seems •

    Manage the browser history so back button goes to right location. • Back button in an app often implies a hierarchy, not simply going to the last screen you were on. • Do you rearchitect your site to create an app hierarchy?
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  35. Where does this button go?

  36. Where does this button go? Does it do the same

    thing as the browser back button?
  37. Where does this button go? Does it do the same

    thing as the browser back button? Should there be an app back button?
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  39. .backButton { display: none; } @media (display-mode: standalone), (display-mode: fullscreen)

    { .backButton { display: block; } } Display mode media query
  40. Not every customer or potential customer will add your Progressive

    Web App to their home screen …but every visitor will “install” your PWA!
  41. Losing Our URLs

  42. http://codepen.io/mariusbalaj/full/Jtqbm/

  43. 2out of 1000 mobile users tap share buttons https://www.moovweb.com/anyone-use-social-sharing-buttons-mobile/

  44. Make it Easy to Copy and Paste

  45. Web Share API

  46. Fast, Fluid Experience

  47. Provide Immediate Feedback

  48. Animate Transitions to Support Wayfinding

  49. Smooth Pages — Avoid Jumps, Use Skeleton Pages

  50. App Shell model of PWAs

  51. Perceived performance matters most By Addy Osmani, http://bit.ly/2o0YBgu

  52. App Shell means first paint happens quickly No PWA, No

    App Shell, 4G PWA with App Shell, 4G
  53. PWAs are a trojan horse for performance.

  54. WARNING: App Shell model often assumes you’re building a single

    page application
  55. PWA != SPA

  56. Personality & Polish

  57. Apps Just “Feel Better”

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  59. Native Code Doesn’t Guarantee Delight

  60. Attention to detail and polish

  61. Animate Transitions for Wayfinding and Polish https://css-tricks.com/native-like-animations-for-page-transitions-on-the-web/

  62. Personality Amazing SVG Animation by Darin Senneff https://codepen.io/ dsenneff/full/ 2c3e5bc86b372d5424b00

    edaf4990173/
  63. Should feeling like an app be the goal? Should feeling

    like an app be your goal?
  64. Feel Like an App Website with Performance Improvements Full screen,

    app shell with native design language Minimal-ui Standalone System Fonts Fullscreen Animation and Polish App Shell Native Design MORE COMPLEX LESS COMPLEX
  65. 2. Installation and Discovery

  66. Add to Home Screen Prompts

  67. Add to Home Screen Badges Firefox Samsung Non PWA PWA

  68. Add to Home Screen Badges Firefox Samsung Non PWA PWA

  69. Add to Home Screen Badges

  70. Add to Home Screen Banners Chrome Opera

  71. Add to Home Screen Banner’s Engagement Heuristic

  72. Pick the Optimal Time to Ask for Install Asking on

    order confirmation page resulted in 3x increase in conversion for Flipkart
  73. Chrome Changing Add-to-Homescreen Behavior

  74. App Stores

  75. PWAs don’t no need an app store!

  76. Progressive Web Apps in Microsoft Store Two ways to get

    into store: 1. Active submission 2. Passive ingestion Source:
 https://www.slideshare.net/AaronGustafson/progressive-web- apps-and-the-windows-ecosystem-build-2017
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  79. PhoneGap

  80. Remember, your PWA is your website so all the normal

    web marketing applies.
  81. Installation and Discovery No Add to Home Screen Native App

    Stores Manifest Spiders find PWA Manually submit PWA PhoneGap Trusted Web Activity MORE COMPLEX LESS COMPLEX
  82. Offline Mode

  83. Cache for performance and offline fallback

  84. Offline Fallback Pages Can Keep People Engaged • Trivago found

    that 67% of people continue to browse the site when they come back online. Source: http://bit.ly/2GoXjCi
  85. Cache recently viewed content for offline use

  86. Display the Information You Have

  87. Let User’s Choose What They Want Offline

  88. Pre-cache Content and Apps

  89. Give People Control

  90. Offline Interactivity — Background Sync https://developers.google.com/web/updates/2015/12/background-sync

  91. Offline Interactivity — Or Disallow Editing

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  93. Offline Cache for Performance Only Offline Interactivity Offline Fallback Offline

    Indicator Cache Recently Viewed Pages Disable Interactivity Pre-cache Predetermined Pages Pre-cache Dynamic Items User Choose What to Cache MORE COMPLEX LESS COMPLEX
  94. 4. Push Notifications

  95. Notification JS is Relatively Easy

  96. Many Hidden Challenges

  97. 3x Higher Conversion for Personalized Notifications

  98. Flowchart for how Slack decides whether to send a notification

    or not. https://twitter.com/codevisuals/status/ 838881724016787457
  99. Many people are annoyed by notifications http://info.localytics.com/blog/the-inside-view-how-consumers-really-feel-about-push-notifications

  100. Don’t immediately ask for permission to send push notifications

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  102. Twitter Lite handles push notifications well Browser prompt Confirm and

    Customize Twitter prompt
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  104. 62 63 https://cloudfour.com/thinks/time-to-update-your-permissions-ux/

  105. Push Notifications No Push Notifications Personalized and Integrated Notifications CMS

    Plugin Subscribe via Push Provider One-off Marketing Push Notifications Background Updates Notification Design Analytics and Segmentation Backend Integration MORE COMPLEX LESS COMPLEX
  106. Beyond PWAs

  107. Accelerated Mobile Project

  108. I have some opinions about AMP…

  109. But if you must AMP, then AMP to PWA Install

    Path https://developer.washingtonpost.com/pb/blog/post/2016/07/15/amp-up-with-progressive-web-apps/
  110. Auto-login with Credential Management API

  111. Payment Request API

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  115. Beyond PWAs Basic PWA Multiple New APIs Autofill Support AMP

    to PWA Credential Management API Camera, other sensors Payment Request API AMP in PWA MORE COMPLEX LESS COMPLEX
  116. PWAs are progressive because… Progressive Roadmap {manifest} https Jul 13

    Redesign launches Better security with HTTPS Faster site via HTTP/2 Better bookmarks via manifest Oct 3 Faster pages Offline fallback It’s a PWA! service worker Oct 18 Offline pages Offline indicator Improved font loading Nov 22 Push notifications HTTP/2 Link Preload Dec 7 Small tweaks PWA announced
  117. Define Your Ideal Progressive Web App

  118. Offline Interactivity Cache for Perf Only Offline Native App Stores

    Website with Perf Improvements Full Screen, App Shell New APIs No Add to Home Screen Basic PWA Feels Like An App Installation and Discovery No Push Notifications Personalized and Integrated Push Push Notifications Beyond PWAs
  119. Benchmark & Plan to Measure

  120. Progressive Web App Blueprint Planning & Definition

  121. Progressive Web App Blueprint Planning & Definition Technical Debt (if

    Necessary) Gather team Brainstorm Ideal PWA Benchmarks and measurement plans Build roadmap
  122. Assess Current Website

  123. Is Your Website Reasonably Fast?

  124. Is it Usable?

  125. Progressive Web App Blueprint Planning & Definition Technical Debt (if

    Necessary) Baseline PWA Front-end Additions Larger Initiatives Gather team Brainstorm Ideal PWA Benchmarks and measurement plans Build roadmap Assess current website Fix performance issues Fix usability issues Manifest HTTPS Service worker for performance Offline Fallback Cache recently viewed pages Precache popular or important pages Add third-party push notification service CMS plugin for push notifications Payment Request API Credentials Management API Integrate notifications with backend systems Background sync Move to app shell
  126. Baseline PWA Front-end Additions Larger Initiatives Progressive Web App Blueprint

    Planning & Definition Technical Debt (if Necessary) Gather team Brainstorm Ideal PWA Benchmarks and measurement plans Build roadmap Assess current website Fix performance issues Fix usability issues Manifest HTTPS Service worker for performance Offline Fallback Cache recently viewed pages Precache popular or important pages Add third-party push notification service CMS plugin for push notifications Payment Request API Credentials Management API Integrate notifications with backend systems Background sync Move to app shell
  127. Baseline PWA Front-end Additions Larger Initiatives Progressive Web App Blueprint

    Planning & Definition Technical Debt (if Necessary) Gather team Brainstorm Ideal PWA Benchmarks and measurement plans Build roadmap Assess current website Fix performance issues Fix usability issues Manifest HTTPS Service worker for performance Offline Fallback Cache recently viewed pages Precache popular or important pages Add third-party push notification service CMS plugin for push notifications Payment Request API Credentials Management API Integrate notifications with backend systems Background sync Move to app shell
  128. Every step on the path to a PWA makes sense

    on its own.
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  130. More details in the book! Follow @thepwabook, @pwastats or @grigs

    for updates. https://abookapart.com/products/ progressive-web-apps No 28 PROGRESSIVE WEB APPS Jason Grigsby
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  132. Thank You!

  133. Thank You! My Secret Plan to Rule the World by

    Ann H Smartphone on Bridge by Jeremy Levin Instagram App on iPhone by Pixabay Southbank - Samsung Galaxy S8 (1) by TaylorHerring Now THIS is comfort! by Garry Wilmore Cold Snow Man Person Asphalt Blur Car City by Pixabay Woman Listening to Music by bruce mars Woman and Dog by Tookapic Focus by Mark Hunter Person Holding Silver iPhone by rawpixel.com MacBook Air Beside Painting by rawpixel.com Android Phone by freestocks.org Smart Watch by Oliur Rahman Apple Office Internet iPad by Pixabay Woman Jumping by Quang Anh Ha Nguyen SEM by Pixabay Legs on Chair by kaboompics.com In Hiding by Taylor McBride Medusa Kill Switch by Scott Hart White Auto Gauge by Mikes Photos Blue and Silver Stethoscope by Pixabay Tortoise by Frans Van Heerden iPhone Photo on Railroad Tracks by Kaique Rocha database by ✦ Shmidt Sergey ✦ from the Noun Project Cloud by Blackwoodmedia.com.au from the Noun Project Responsive Design by Delwar Hossain from the Noun Project cogs by Gregor Cresnar from the Noun Project Special thanks to these fabulous people who graciously shared their work under Creative Commons.