Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Sign up for free
Menu
Search
Features
All features
Private URLs
Password Protection
Custom URLS
Scheduled publishing
Remove Branding
Restrict embedding
Deck Collections
Notes
Features
All features
Private URLs
Password Protection
Custom URLS
Scheduled publishing
Remove Branding
Restrict embedding
Deck Collections
Notes
Explore
Featured decks
Featured speakers
Programming
Technology
Storyboards
Explore
Featured decks
Featured speakers
Programming
Technology
Storyboards
Pricing
Search
Sign in
Sign up for free
DevTools 🪄 #2024
Search
Yoriiis
December 10, 2024
Programming
10
0
Share
Embed
Copy iframe code
Copy JS code
Copy link
Start on current slide
DevTools 🪄 #2024
Yoriiis
December 10, 2024
More Decks by Yoriiis
See All by Yoriiis
Performances
yoriiis
0
6
Other Decks in Programming
See All in Programming
contenteditable と日本語入力に向き合う
colorful12
0
200
最近”作らせてる” ローカルAIアプリの話
akit37
0
470
Next.js: The final boss of Web Performance
guaca
0
250
Verilogで学ぶCPU自作入門
uyuki234
8
4.1k
Herb in Rails 8.2: Your ERB views, now HTML-aware @ Rails World 2026, Austin, Texas
marcoroth
0
220
HTML-in-Canvasで作る未来のWeb UI表現
clockmaker
5
5.1k
The Rails Doctrine Decade
koic
2
590
ActionController meets Protocol Buffers
sorah
0
520
Apple Intelligence を用いた個人情報誤送信防止、及びユーザーリクエスト体験の改善について
yukiny
0
350
ChromeでローカルLLM
ryu1013
0
140
Kotlinの15年とServer-Side Kotlin
n_takehata
1
150
Atomic Design, Enforced: Scaling Mobile Design Systems (next.app devCon / droidCon Berlin 2026)
steliosf
PRO
0
170
Featured
See All Featured
The browser strikes back
jonoalderson
0
1.8k
VelocityConf: Rendering Performance Case Studies
addyosmani
331
25k
Visualization
eitanlees
153
17k
エンジニアに許された特別な時間の終わり
watany
109
250k
WENDY [Excerpt]
tessaabrams
14
40k
The Psychology of Web Performance [Beyond Tellerrand 2023]
tammyeverts
49
3.6k
We Are The Robots
honzajavorek
0
400
Agile Leadership in an Agile Organization
kimpetersen
PRO
0
280
Designing for Timeless Needs
cassininazir
1
530
Building AI with AI
inesmontani
PRO
1
1.3k
Lightning Talk: Beautiful Slides for Beginners
inesmontani
PRO
2
730
Hiding What from Whom? A Critical Review of the History of Programming languages for Music
tomoyanonymous
3
1.3k
Transcript
DevTools 🪄 Prisma Media - 2024
Settings
Settings > Elements • Show user agent shadow DOM •
Show CSS documentation tooltip
Settings > Network • Disable cache while DevTools is open
Settings > Debugger • Disable JavaScript
Command
Command • Commande+Maj+P (Mac) • Run command, open file, snippet
• Capture screenshot • Block ads
Multi panel Appuyer sur Echap pour ouvrir un second panneau
Console tab
Console ⚡ • Live expression • Utilities (calc, $0, copy,
getEventListeners, monitorEvents) • Store as global variable • Preserve log
Elements tab
Elements ⚡ • Recherche de sélecteur (Commande+F), très pratique !
• DOM breakpoints • Force element state • Styles computed • Event listeners • Scroll into view
Device emulation ⚡ • Responsive vs device • Preset media
queries • Show media queries • Pixel ratio (responsive only)
Source tab
Source ⚡ • Breakpoints (debugger, breakpoint, logpoint) • Call stack
• Scope • Restart frame • Console panel • Workspace/overrides
Snippet ⚡ • Stocker des petits bouts de code •
Réutilisable et accessible • … A partager entre les équipes
Node debugger ⚡ • Debugger un script ou une application
Node.js • Prérequis ◦ Configuration VSCode ◦ Exécuter Node en mode inspection • Debug depuis VSCode (breakpoint, variable, console) • Debug depuis Chrome, chrome://inspect
Application tab
Application ⚡ • Manifest • Storage • Local storage/session storage
• Cookies
Performance tab
Performance ⚡ • New home (LCP, CLS, INP) • Comparer
les environnements • Enregistrement et analyse d’un rapport • Sidebar insights/annotations • Memory (ex Insights panel monitor)
Network tab
Network ⚡ • Preserve log • Network condition (cache, throttling,
user agent, encoding) • Filter (extension simple/multiple, text), stats updates • Initiator • Copy request as • Size (network vs resource size)
Tools
Tools > Network request blocking • Bloquer un domaine ou
une url • Désactiver par défaut et à chaque fermeture de la DevTools • Vs extension de blocage • Badge de status ⚠
Tools > Rendering • prefer-color-scheme • media type • prefer-reduced-motion
• …
Tools / Coverage • Code non utilisé sur la page
Tools > CSS overview • Couleurs • Fonts • Media
queries
CSS overview - Overview 1/2
CSS overview - Overview 2/2
Tools > AI assistant • Utilise Gemini (anciennement Bard) •
Gratuit • Attention à la confidentialité /!\ • Ex d’analyse : style, réseaux, sources, performance • Accès au script d’analyse • Conversationnel
AI Assistant - Optimisation de l’accessibilité
AI Assistant - Optimisation des sélecteurs CSS
Ressources • https://developer.chrome.com/blog • https://developer.chrome.com/docs • https://umaar.com/dev-tips • Commande “What’s
new” dans la DevTools • Chrome Canary pour les versions bêtas • https://nodejs.org/en/learn/getting-started/debugging