Web Performance
Performance Metrics & Core Web Vitals
52 lessons in Web Performance
- Time to First Byte (TTFB)Slides / Video
- Lab vs Field DataCode Quiz
- Total Blocking TimeCode Quiz
- PerformanceObserver SetupCode Quiz
- INP ThresholdsCode Quiz
- FID CalculationCode Quiz
- Computing TTFBCode Quiz
- Measuring FCPCode Quiz
- Navigation TimingCode Quiz
- p75 PercentileCode Quiz
- Rating BoundariesCode Quiz
- CLS ThresholdsCode Quiz
- LCP ThresholdsCode Quiz
- web-vitals LibraryCode Quiz
- Largest Contentful Paint (LCP)Slides / Video
- What Core Web Vitals AreSlides / Video
- Tools for Measuring Web VitalsSlides / Video
- Lab Data vs Field Data (RUM)Slides / Video
- Core Web Vitals: Three CategoriesSlides / Video
- Good vs Poor Metric ThresholdsSlides / Video
- Time to Interactive (TTI)Slides / Video
- The Three Core Web VitalsQuiz
- FID Replaced by INPQuiz
- CLS Good ThresholdQuiz
- Lab vs Field DataQuiz
- What LCP MeasuresQuiz
- Why the 75th PercentileQuiz
- What INP MeasuresQuiz
- INP Good ThresholdQuiz
- LCP Rating ThresholdsQuiz
- Total Blocking Time BasicsQuiz
- Speed Index BasicsQuiz
- What CLS MeasuresQuiz
- Why Metrics Are User-CentricQuiz
- Time to Interactive BasicsQuiz
- Percentiles (p75) in MeasurementFlashcard
- First Input Delay (FID)Flashcard
- What Core Web Vitals AreFlashcard
- Core Web Vitals ThresholdsFlashcard
- Total Blocking Time (TBT)Flashcard
- Time to Interactive (TTI)Flashcard
- Interaction to Next Paint (INP)Flashcard
- Largest Contentful Paint (LCP)Flashcard
- First Contentful Paint (FCP)Flashcard
- Cumulative Layout Shift (CLS)Flashcard
- Time to First Byte (TTFB)Flashcard
- Speed IndexFlashcard
- Lab Data vs Field DataFlashcard
- First Contentful Paint (FCP)Slides / Video
- Interaction to Next Paint (INP)Slides / Video
- Cumulative Layout Shift (CLS)Slides / Video
- First Input Delay (FID)Slides / Video