#214 · Frontend Framework Tools Developer Tool

Angular Validator

Validate Angular source against configurable best-practice profiles. The validator checks component structure, selectors, standalone imports, dependency injection, RxJS cleanup, template accessibility, route ordering, modern Angular APIs, and performance conventions.

Developer Input

Angular validation input

Angular source code

@Component({selector:'DemoComponent',template:'<img src="logo.png"><button (click)="save()"></button>'})
export class DemoComponent {
  constructor(private api: ApiService) {}
  ngOnInit(){ this.api.load().subscribe(value => this.value = value); }
}

Validation profile

Angular version

Show passed rules Check accessibility Check RxJS and performance Auto-run while typing

How to use this developer tool

Paste Angular source or a combined component and template snippet.
Select a validation profile and Angular version.
Enable accessibility and performance checks as needed.
Run validation and fix high-severity issues first.

What this developer tool does

The validator scores common Angular conventions and reports rule IDs, severity, line numbers, messages, and suggested corrections.

Detect Angular APIs → apply profile rules → locate issues → calculate compliance score → return actionable validation report.

This browser validator complements but does not replace Angular compiler, TypeScript, ESLint, or template type checking.

Example

A selector using PascalCase, an image without alt text, and an unmanaged subscription are reported as naming, accessibility, and RxJS issues.

Tips for better output

Use Strict for new components.
Address security and accessibility failures first.
Use async pipe or managed cleanup for subscriptions.
Check version compatibility before adopting signals APIs.

FAQ

How do I validate Angular component code online?

Paste the source, choose a profile, and run validation to receive rule-based errors and warnings.

Can this tool check Angular accessibility issues?

Yes. It checks common image, label, button, and keyboard accessibility patterns.

How do I validate Angular standalone components?

Use the Modern Standalone profile to check standalone metadata, imports, and modern API usage.

Can the validator detect RxJS subscription leaks?

It detects common unmanaged subscribe patterns and recommends cleanup or async pipe usage.

Does the tool validate Angular Signals usage by version?

It reports basic version-compatibility warnings for signal-style APIs.

Related developer tools

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Validation categories

Area	Coverage
Structure	Decorators, selectors, class shape
Runtime Safety	RxJS, cleanup, DI
Template	Bindings and accessibility
Modern Angular	Standalone, signals, control flow

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