Upgrade to Pro — share decks privately, control downloads, hide ads and more …

Image optimization for decreasing app size

Sponsored · Ship Features Fearlessly Turn features on and off without deploys. Used by thousands of Ruby developers. →
Avatar for Aydar Aydar
September 07, 2017
Programming
81
0

Image optimization for decreasing app size

Presentation for The Munich iOS Developer Meetup lightning talk hosted at Freeletics

Avatar for Aydar

Aydar

September 07, 2017

More Decks by Aydar

See All by Aydar
The Realities of A/B Testing
Avatar for Aydar aydarin
0
100
Development on Kotlin/Native and Swift
Avatar for Aydar aydarin
1
130
AppCode under the hood
Avatar for Aydar aydarin
1
350
Bridging the gap between Kotlin and Swift
Avatar for Aydar aydarin
0
140
A look into AB testing
Avatar for Aydar aydarin
0
92
Exploring MVVM-C
Avatar for Aydar aydarin
0
180
Coordinate your app
Avatar for Aydar aydarin
1
100
Localization.pdf
Avatar for Aydar aydarin
0
67
MVVM vs MVP
Avatar for Aydar aydarin
1
290

Other Decks in Programming

See All in Programming
Modding RubyKaigi for Myself
Avatar for yui-knk yui_knk
0
900
dRuby over BLE
Avatar for makicamel makicamel
2
320
The ROI of Quarkus for Spring Boot Applications
Avatar for Holly Cummins hollycummins
0
100
Make SRE Operations Easier with Azure SRE Agent
Avatar for KAMEGAWA Kazushi kkamegawa
0
4.7k
キャリア迷子上等 ─ "ない道"は自分で作ればいい
Avatar for 16bit_idol 16bitidol
3
1.8k
Old Dog, New Tricks: The Java 25 Reinvention - JNation
Avatar for A N M Bazlur Rahman bazlur_rahman
0
150
Java × distroless で 軽量なコンテナイメージを / Java on Distroless
Avatar for Daisuke Garaike contour_gara
0
510
さぁV100、メモリをお食べ・・・
Avatar for nilpe nilpe
0
130
Skillsは効率化、Agentsは"自分の拡張"——Builder時代のエージェント編成（CC Night 2026）
Avatar for Hiroki Uemura wemra
1
110
IBM Bobを活用したレガシーアプリの最新化
Avatar for Akira Onishi (IBM) oniak3ibm
PRO
1
180
AIで効率化できた業務・日常
Avatar for Ochtum ochtum
0
110
不変条件と整合性境界—ビジネスが決める設計判断と実現パターン / Invariants and Consistency Boundaries
Avatar for nrs nrslib
13
3.5k

Featured

See All Featured
Statistics for Hackers
Avatar for Jake VanderPlas jakevdp
799
230k
Design in an AI World
Avatar for tapps tapps
1
230
How to train your dragon (web standard)
Avatar for Monica Dinculescu notwaldorf
97
6.7k
The Pragmatic Product Professional
Avatar for Laura Van Doore lauravandoore
37
7.3k
Optimising Largest Contentful Paint
Avatar for Harry Roberts csswizardry
37
3.7k
sira's awesome portfolio website redesign presentation
Avatar for ElsiraPls elsirapls
0
270
Six Lessons from altMBA
Avatar for Skipper Chong Warson skipperchong
29
4.3k
[SF Ruby Conf 2025] Rails X
Avatar for Vladimir Dementyev palkan
2
1.1k
Claude Code のすすめ
Avatar for schroneko schroneko
67
230k
How to optimise 3,500 product descriptions for ecommerce in one day using ChatGPT
Avatar for Katarina Dahlin katarinadahlin
PRO
1
3.6k
Data-driven link building: lessons from a $708K investment (BrightonSEO talk)
Avatar for Szymon Słowik szymonslowik
1
1.1k
How to Talk to Developers About Accessibility
Avatar for Jason CranfordTeague jct
2
220

Transcript

  1. IMAGE OPTIMIZATION FOR DECREASING APP SIZE Aydar Mukhametzyanov (Freeletics)

  2. LET ME TELL THE STORY…

  3. 0 27.5 55 82.5 110 Before After THE STORY MB

  4. THE STORY

  5. THE STORY

  6. THE STORY

  7. OPTIMIZATION

  8. OPTIMIZATION by Xcode

  9. OPTIMIZATION Asset size 12.9 MB 197.3 MB 196.3 MB -1

    MB by Xcode Bundle size

  10. ImageOptim https://imageoptim.com OPTIMIZATION

  11. Original PNG 1.8 MB Optimized PNG 1.2 MB OPTIMIZATION –

    33%

  12. OPTIMIZATION

  13. Original PNG 1.8 MB Lossy optimized PNG 498 KB OPTIMIZATION

    – 72%

  14. OPTIMIZATION

  15. Original JPG 1.4 MB Lossy optimized JPG 79 KB OPTIMIZATION

    – 94%

  16. OPTIMIZATION /Applications/ImageOptim.app/Contents/MacOS/ImageOptim *.png

  17. PNG to JPG ? CONVERTING

  18. CONVERTING

  19. CONVERTING sips -s format jpeg -s formatOptions 100 “image.png" --out

    "image.jpg" SIPS

  20. { "images" : [ { "idiom" : "universal", "filename" :

    "welcome-photo-man.jpg", "scale" : "1x" }, … Content.json CONVERTING

  21. PULL_REQUEST_TEMPLATE.md PROCESSES

  22. 0 27.5 55 82.5 110 Before After CONCLUSION MB

  23. CONCLUSION

  24. ImageOptim PULL_REQUEST_TEMPLATE.md CONCLUSION SIPS CONVERTING OPTIMIZATION PROCESSES Xcode +

  25. aydarin [email protected] @aydarmukh QUESTIONS THANK YOU