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Last updated: April 13, 2026

JWT Decoder for Angular Developers

Quick Answer

DevToolHQ's jwt decoder works great alongside Angular. Use it to quickly jwt decoder during development, then integrate the pattern into your Angular codebase using the code example below.

Use Cases in Angular

  • 1.Verify user authentication tokens
  • 2.Debug token expiration and claims
  • 3.Implement role-based access control from JWT claims
  • 4.Validate tokens from third-party auth providers

Angular Code Example

Angular
import { Component } from '@angular/core';
import { FormsModule } from '@angular/forms';

@Component({
  selector: 'app-jwt',
  standalone: true,
  imports: [FormsModule],
  template: `
    <textarea [(ngModel)]="token" rows="3" placeholder="Paste JWT..."></textarea>
    <pre>{{ payload }}</pre>
    <p *ngIf="expired" style="color:red">Token expired</p>
  `,
})
export class JwtComponent {
  token = '';
  get payload() {
    try {
      const p = JSON.parse(atob(this.token.split('.')[1].replace(/-/g, '+').replace(/_/g, '/')));
      return JSON.stringify(p, null, 2);
    } catch { return 'Invalid JWT'; }
  }
  get expired() {
    try { return JSON.parse(atob(this.token.split('.')[1])).exp < Date.now()/1000; }
    catch { return false; }
  }
}

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