demo

composer require intervention/image:^2.7
         
use Illuminate\Support\Facades\File;
use App\Models\Slider;
use Intervention\Image\Facades\Image;
use Illuminate\Support\Facades\Storage;

public function store(Request $request){
        $data = new Slider;
        $data->title = $request->title;
    
        if ($request->hasFile('image')) {
            $image = $request->file('image');
            $filename = uniqid() . '.webp';
            $publicPath = public_path('images/sliders/' . $filename);
            if (!file_exists(public_path('images/sliders'))) {
                mkdir(public_path('images/sliders'), 0755, true);
            }
            $img = Image::make($image)
                        ->resize(1200, null, function ($constraint) {
                            $constraint->aspectRatio();
                            $constraint->upsize();
                        })
                        ->encode('webp', 75);
            $img->save($publicPath);
            $data->image = $filename;
        }
    
        $data->save();
    
        return redirect()->back()->with('success', 'Added Successfully');
    }
    public function update(Request $request, $id){
        $data = Slider::findOrFail($id);
        $data->title = $request->title;
    
        if ($request->hasFile('image')) {
            $oldPath = public_path('images/sliders/' . $data->image);
            if (File::exists($oldPath)) {
                File::delete($oldPath);
            }
            $filename = uniqid() . '.webp';
            $newPath = public_path('images/sliders/' . $filename);
            if (!file_exists(public_path('images/sliders'))) {
                mkdir(public_path('images/sliders'), 0755, true);
            }
            $img = Image::make($request->file('image'))
                        ->resize(1200, null, function ($constraint) {
                            $constraint->aspectRatio();
                            $constraint->upsize();
                        })
                        ->encode('webp', 75);
            $img->save($newPath);
            $data->image = $filename;
        }
    
        $data->save();
    
        return redirect()->back()->with('success', 'Updated Successfully Done');
    }