Automatic zoom/set width on Flutter webview - flutter

Question

I'm using the webview plugin to show a graph in my app. The sample code works fine and it displays the website with the graph I want to show. I want it to be automatically zoomed in for me to be able to read it better, and also because I'm adding multiple graphs in one page. The website only has one component (the graph) and nothing else (no headers or anything else) so I figured I can't use javascript methods where I can program my app not to show specific parts of the webpage.
Here is my current code:
import 'package:flutter/material.dart';
import 'package:webview_flutter/platform_interface.dart';
import 'package:webview_flutter/webview_flutter.dart';
void main() {
runApp(const MyApp());
}
class MyApp extends StatelessWidget {
const MyApp({super.key});
// This widget is the root of your application.
#override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: const MyHomePage(title: 'Flutter Demo Home Page'),
);
}
}
class MyHomePage extends StatefulWidget {
const MyHomePage({super.key, required this.title});
final String title;
#override
State<MyHomePage> createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
#override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: Color(0xFFFCFCFC),
appBar: AppBar(
centerTitle: true,
title: const Text('test',
style: TextStyle(
fontSize: 28.0,
fontWeight: FontWeight.bold,
letterSpacing: 2.5,
),
),
),
body: Center(
child: Column(
crossAxisAlignment: CrossAxisAlignment.center,
children: [
/*Container(
height: 90,
width: 90,
color: Colors.red,
),*/
Container(
height: 150,
child: WebView(
initialUrl: 'https://thingspeak.com/channels/1864145/charts/1?bgcolor=%23ffffff&color=%23d62020&dynamic=true&results=60&title=Carbon+Dioxide+Concentrations&type=line',
javascriptMode: JavascriptMode.unrestricted,),
color: Colors.blue,
),
],
),
),
);
}
}
I was wondering if there's a method where I can automatically zoom the website. If not, are there other plugins that support this?