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.
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
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
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?
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
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
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
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
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
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
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
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
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
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.
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