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Performance

Making your site run even faster.

We're highlighting up-and-coming features or libraries we think you should know about.

Feature Highlight: blocking="render"

Those of us who give a FOUC (Flash of Unstyled Content) about controlling how websites load will be happy to learn about blocking="render". As it name implies, this attribute can make a <link>, <script> or <style> tag block the page's rendering until they're fully loaded.

Browser support isn't quite there yet–but it's definitely something that will make web loading UX much smoother once it becomes widely supported.

Baseline: Περιορισμένη διαθεσιμότητα

Μάθετε περισσότερα

Performance Experience & Sentiment

It's loud and clear: the DX of srcset and sizes could use improvement! Both ends of the spectrum are around it, with srcset/sizes itself topping the frustration list, and sizes="auto being the most liked feature—because it alleviates some of this pain.

Group by:

Sort by:

1
Performance
70.8%
21.9%
6.8%
4,636
2
Performance
68.3%
21.9%
9%
4,627
3
Performance
25.6%
30.8%
43.1%
4,613
4
Performance
19.8%
20.5%
59.3%
4,624
5
Performance
6.2%
25.2%
68.1%
4,607
6
Performance
4%
22.8%
72.8%
4,610
7
Performance
8.4%
88.9%
4,592

Εμπειρία

  • Το έχω χρησιμοποιήσει: Respondents who have used an item.
  • Το έχω ακουστά: Respondents who have heard about an item, but haven't used it.
  • Δεν το έχω ακουστά: Respondents who have never heard about an item.

Γνώμη

  • Θετική: Συμμετέχοντες οι οποίοι ενδιαφέρονται να μάθουν περισσότερα για μία τεχνολογία, ή θα ήθελαν να την ξαναχρησιμοποιήσουν.
  • Ουδέτερη: Συμμετέχοντες οι οποίοι δεν έδειξαν κάποιο συναίσθημα για μία τεχνολογία.
  • Αρνητική: Συμμετέχοντες οι οποίοι δεν ενδιαφέρονται να μάθουν περισσότερα για μία τεχνολογία, ή την έχουν χρησιμοποιήσει και είχαν αρνητική εμπειρία.

Performance Pain Points

The whole point of the web is to give people access to faraway content. Given that, it does feel a bit strange that loading that data is so often an afterthought, with little progress made in the last 30 years apart from slightly nicer spinner animations.

What are your pain points around performance?
Multiple
Top pain point topics overall.

View:

Items that are not one of “limitations
0%
20%
40%
60%
80%
100%
1
Loading
4
2
Graphics
2
3
Ecosystem issues
2
4
Responsive design
5
Tooling
2
6
Poor design
1
7
Education
8
Cognitive overload
9
Excessive complexity
10
Core Web Vitals
1
11
Browser support
2
12
Debugging
13
Animations
14
End-user experience
1
15
Reliability
16
Typography
1
17
Reliance on JavaScript
18
19
workplace
20
21
preload
22
Server-client communication
23
Meta-issues
24
Other Answers
0%
20%
40%
60%
80%
100%
% of question respondents

Recommended Resources

Web Performance Fundamentals, v2
Todd Gardner
Request Metrics

Web Performance Fundamentals, v2

Speed up your websites and web apps by mastering the latest performance metrics and web optimization techniques.
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