Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
The 12MB Web Page: A tale of perfect PageSpeed ...
Search
Ben Smithett
May 09, 2016
Technology
1
340
The 12MB Web Page: A tale of perfect PageSpeed scores & developer happiness
Quick little talk I did at an Envato Code Party on May 9 2016.
Ben Smithett
May 09, 2016
Tweet
Share
More Decks by Ben Smithett
See All by Ben Smithett
Atomic CSS with Fela
bensmithett
0
120
Objects in Space: A practical guide to CSS display, position & z-index
bensmithett
0
47
The UI is an Application
bensmithett
0
1.2k
Hands on with the modern front end stack
bensmithett
0
1.2k
The New Front End Stack: A really really really high level introduction
bensmithett
1
520
Smarter Sass/Less Builds with Webpack (MelbJS Edition)
bensmithett
0
330
Smarter Sass builds with Webpack
bensmithett
1
230
Faking Real Time: Optimistic Updates & Eventual Consistency (Decompress 2015)
bensmithett
0
500
Other Decks in Technology
See All in Technology
VCC 2025 Write-up
bata_24
0
180
研究開発部メンバーの働き⽅ / Sansan R&D Profile
sansan33
PRO
3
20k
Trust as Infrastructure
bcantrill
0
340
o11yで育てる、強い内製開発組織
_awache
3
120
Goに育てられ開発者向けセキュリティ事業を立ち上げた僕が今向き合う、AI × セキュリティの最前線 / Go Conference 2025
flatt_security
0
350
OCI Network Firewall 概要
oracle4engineer
PRO
1
7.8k
GC25 Recap+: Advancing Go Garbage Collection with Green Tea
logica0419
1
410
Exadata Database Service on Dedicated Infrastructure(ExaDB-D) UI スクリーン・キャプチャ集
oracle4engineer
PRO
2
5.4k
Function calling機能をPLaMo2に実装するには / PFN LLMセミナー
pfn
PRO
0
920
英語は話せません!それでも海外チームと信頼関係を作るため、対話を重ねた2ヶ月間のまなび
niioka_97
0
120
OpenAI gpt-oss ファインチューニング入門
kmotohas
2
970
M5製品で作るポン置きセルラー対応カメラ
sayacom
0
150
Featured
See All Featured
GitHub's CSS Performance
jonrohan
1032
460k
How To Stay Up To Date on Web Technology
chriscoyier
791
250k
Building a Scalable Design System with Sketch
lauravandoore
462
33k
Done Done
chrislema
185
16k
Responsive Adventures: Dirty Tricks From The Dark Corners of Front-End
smashingmag
252
21k
"I'm Feeling Lucky" - Building Great Search Experiences for Today's Users (#IAC19)
danielanewman
229
22k
The Cost Of JavaScript in 2023
addyosmani
53
9k
For a Future-Friendly Web
brad_frost
180
9.9k
Intergalactic Javascript Robots from Outer Space
tanoku
273
27k
Agile that works and the tools we love
rasmusluckow
331
21k
The Psychology of Web Performance [Beyond Tellerrand 2023]
tammyeverts
49
3.1k
10 Git Anti Patterns You Should be Aware of
lemiorhan
PRO
657
61k
Transcript
The 12MB Web Page A tale of perfect PageSpeed scores
& developer happiness
None
None
None
A static HTML page + some photos Fast? Easy to
build? Free?
Fast?
https://eev.ee/blog/2016/03/06/maybe-we-could-tone-down-the-javascript/
http://idlewords.com/talks/website_obesity.htm
Web pages are pretty fast by default! They only get
slow when we add “clever” cruft
on the other hand…
Photos are biiiiiiiiiig!
The challenge: Can I make a blazing fast, image- heavy
web page without resorting to lots of hacks & workarounds
How fast can a simple HTML document be?
None
None
None
None
None
Speed Index: 1613 In the fastest ~10% of all websites
Optimisation #1 A truthful browser spinner
https://medium.com/@kellycatchpole/10-best-dog-breeds-for-your- family-22ea2cdde78d Browser says page has finished loading LIES!!!!
Don’t make the browser spinner lie. When the page says
it’s done loading, it’s really done!
Optimisation #2 Progressive JPEG
None
Optimisation #3 Responsive Images
Widescreen + Retina: 11.1MB Tablet + Retina: 9.8MB Phone +
Retina: 8.7MB Widescreen: 7.8MB Tablet: 6.5MB Phone: 1.7MB
Optimisation #4 Font Face Observer
None
https://github.com/bramstein/fontfaceobserver
None
Optimisation #5 <script async src=“…”>
Optimisation #6 Cache everything forever
None
Optimisation #7 Use a CDN
None
Notable absentees: • “Critical CSS” • Loading content asynchronously •
Anything very tricky or hacky at all…
Easy to build?
I couuuld hand-write the HTML & CSS for this, but
I want…
• A living styleguide! • Sass! • Hot reloading! •
Reusable components!
The tooling: • React (no client side!) • Webpack +
static-site-generator-webpack-plugin • Sass • CSS Modules
React is a better back-end templating language than your favourite
back-end templating language.
None
None
Free?
GitHub Pages + CloudFlare =
GitHub Pages has pretty crappy caching settings…
None
But if you stick CloudFlare in front of it…
Easy cache header setting!
Free SSL! (well, “flexible SSL”)
A static HTML page + some photos Fast Easy to
build Free ✅ ✅ ✅