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State of HTML 2025

Web Components

Making & using web components.

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

Feature Highlight: ElementInternals

The ElementInternals API recently became widely available, which makes it a perfect complement to existing web components features.

Baseline: Widely Available

Learn more

Useful Resources

Other Web Component Features

Once again we see declarative solutions prevailing, with declarative custom elements topping the sentiment chart.

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1
Web Components
52.6%
35.8%
10.4%
4,457
2
Web Components
46.9%
37.6%
14.9%
4,445
3
Web Components
40%
43.7%
15.7%
4,437
4
Web Components
31.4%
30.9%
37.4%
4,430
5
Web Components
12.9%
34.2%
52.5%
4,404
6
Web Components
9.9%
29.6%
60.2%
4,425
7
Web Components
7.3%
17.4%
75%
4,387
8
Web Components
5.9%
11.9%
81.8%
4,372
9
Web Components
5.1%
15%
79.7%
4,366
10
Web Components
4.8%
17.1%
77.6%
4,402
11
Web Components
8.2%
89.9%
4,364

Erfaring

  • Brukt det: Respondents who have used an item.
  • Hørt om det: Respondents who have heard about an item, but haven't used it.
  • Aldri hørt om det: Respondents who have never heard about an item.

Oppfatning

  • Positiv: Respondenter som er interessert i å lære mer om en teknologi; eller er villige til å bruke den igjen.
  • Nøytral: Respondenter som hadde en nøytral oppfatning av en teknologi.
  • Negativ: Respondenter som ikke er interessert i å lære mer om en teknologi; eller har brukt den og hatt en negativ opplevelse.
“Used” average:20%
“Positive” average:24%
“Negative” average:7%

Web Components Pain Points

What are your top pain points around making and using web components?
Multiple
0%
20%
40%
60%
80%
100%
1
Excessive complexity
1,710
2
Over-reliance on JavaScript & SSR issues
1,225
3
Accessibility issues
1,017
4
Extending native elements
784
5
Overly strict style encapsulation
708
6
Accessing design tokens
486
7
Localization/internationalization issues
352
8
Low shadow DOM CSS specificity
339
9
Slotted descendant styling
317
10
🚫 Ingen
313
0%
20%
40%
60%
80%
100%
% besvarelser på spørsmål
3,232
52%
10

Other Web Components Pain Points

Compared with previous years the same themes are still present: high cognitive overhread, falling short when compared to framework components, and Shadow DOM being more of a problem than a solution.

Any other pain points around making and using web components?
Multiple
Top pain point topics overall.

View:

Items that are not one of “limitations”
0%
20%
40%
60%
80%
100%
1
Cognitive overload
3
2
Ecosystem issues
1
3
2
4
Content
1
5
Styling & customization
1
6
Excessive complexity
7
Browser support
1
8
Education
3
9
Declarative APIs
10
Accessibility
11
Web Components extending built-in elements
12
Adoption & momentum
13
Slotting & Slots
2
14
Web Components styling & theming
2
15
Server-client communication
1
16
Reliance on JavaScript
17
Reactivity
1
18
Tooling
1
19
Loading & packaging
20
Loading
21
community
22
ElementInternals
23
Custom element attributes and props
1
24
Invalid/Spam
25
Form Submission
26
Andre svar
0%
20%
40%
60%
80%
100%
% besvarelser på spørsmål
348
6%
25
5

Anbefalte ressurser

Web Components
Dave Rupert
Paravel

Web Components

Learn where to find excellent Web Components to build web apps. You’ll also learn how to create your own custom components using JavaScript and libraries like Lit that will help you make them faster!
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