NgxJsonReader

ngx-json-reader is a lightweight Angular 20+ library for working with JSON in your applications. It provides a standalone component that can:

• Load JSON from URLs or directly from data inputs
• Render tree view with expand/collapse and inline editing
• Compare multiple JSON sources side-by-side
• Download JSON back to file

Perfect for developer tools, admin dashboards, or any Angular app that needs an interactive JSON viewer/editor.

ToDo

• Synchronous editing of identical JSONs
• Errors emit
• Simple view mode

Installation

npm install ngx-json-reader

Example usage

import { Component } from '@angular/core';
import { JsonReaderComponent } from 'ngx-json-reader';

@Component({
  selector: 'app-root',
  standalone: true,
  imports: [JsonReaderComponent],
  template: `
    <!-- Single JSON, editable -->
    <ngx-json-reader
      [data]="{ hello: 'world', list: [1,2,3] }"
      [editable]="false"
    />

    <!-- Compare two JSONs -->
    <ngx-json-reader
      [data]="[fisrt, second]"
      [downloadFilename]="downloadFilename"
    />
    
    <!-- Load from URLs -->
    <ngx-json-reader
      [srcUrls]="srcUrls"
      [downloadFilename]="downloadFilename"
    />
  `
})
export class AppComponent {
  fisrt = { a: 1, b: { x: 10, y: [1,2] } };
  second = { a: 1, b: { x: 11, y: [1,2,3] }, d: null };
  srcUrls = [
    './some/path/one.json',
    './some/path/two.json',
  ];
  downloadFilename = [
    'new-one.json',
    'new-two.json',
  ];
}

Inputs / Outputs

Inputs

• srcUrls?: string[]: load JSONs from URLs
• srcHeaders?: Record<string, string>: headers for load JSONs from URLs
• data?: unknown | unknown[]: single or multiple JSON objects
• editable = true: enable inline editing
• modified = false: enable add/remove action
• expanded = true: expand all JSONs by default
• downloadFilename: string | string[] = 'data.json': filename when downloading

Outputs

• dataChange: emits on JSON edits