Web Performance Foundations
Measure page speed and fix the causes: images, fonts, scripts and caching.
What you'll learn
- Run and read Lighthouse and WebPageTest reports
- Optimize images with modern formats and sizes
- Load fonts without layout shifts
- Defer and split JavaScript
- Set cache headers
About this course
You measure a slow sample site with Lighthouse and WebPageTest and fix one bottleneck per module. A reviewer checks your final speed report.
Course curriculum
5 modules and 15 lessons over 4–5 weeks. Plan for about 16 learning hours.
01MeasuringWeek 1 · 3 lessons
- Lighthouse
- WebPageTest
- Field versus lab data
02ImagesWeek 2 · 3 lessons
- Formats and compression
- Responsive images
- Lazy loading
03Fonts and CSSWeek 3 · 3 lessons
- Font loading
- Critical CSS
- Unused CSS
04JavaScriptWeek 4 · 3 lessons
- defer and async
- Code splitting
- Third-party scripts
05Speed reportWeek 5 · 3 lessons
- Caching
- Final measurements
- Written review
Project
Speed report. You speed up a sample site and document each change with before and after scores.
Who this course is for
Front-end learners who want their sites to load fast on phones.
Prerequisites
You build pages with HTML, CSS and some JavaScript.
What's included
- 180-day course access
- Structured lessons
- Project files
- Code templates
- Checkpoints
- One instructor review
- Support during the program
- A digital completion certificate
Learning format
Guided project course, part of our guided project courses. Checkpoints and one instructor review.
Access and delivery
- Enrollment access is activated within 15 minutes after payment.
- Instructor review is normally completed within 2 business days per submitted checkpoint, and the final certificate is issued within 2 business days after completion.
Certificate
You receive a digital completion certificate. Instructor review is normally completed within 2 business days per submitted checkpoint, and the final certificate is issued within 2 business days after completion.
Frequently asked questions
When does access start?
Enrollment access is activated within 15 minutes after payment.
Is payment taken on this website?
No. After you submit your enrollment request, we reply by email with payment details and enrollment confirmation.
Does this course guarantee a job or income?
No. It is an education and training service and does not include employment, income or placement guarantees.
Can I cancel?
Our Refund and Cancellation Policy lists the terms for guided project programs.
