tinyMCEだと、textareaで文字の装飾はもちろん画像の挿入ができる
### viewの作成
views/includes/tinyeditor.blade.php
<script src="https://cdn.tiny.cloud/1/no-api-key/tinymce/5/tinymce.min.js" referrerpolicy="origin"></script>
<script>tinymce.init({selector:'textarea'});</script>
posts/create.blade.php
@extends('layouts.admin')
@section('content')
    @include('includes.tinyeditor')
...
### filemanager install
https://unisharp.github.io/laravel-filemanager/installation
$ php composer.phar require unisharp/laravel-filemanager
$ php composer.phar require intervention/image
Unisharp\Laravelfilemanager\LaravelFilemanagerServiceProvider::class,
        Intervention\Image\ImageServiceProvider::class,
'Image' => Intervention\Image\Facades\Image::class,
$ php artisan vendor:publish –tag=lfm_config
$ php artisan vendor:publish –tag=lfm_public
### tinyeditor.blade.php
<script src="//cdn.tinymce.com/4/tinymce.min.js"></script>
<script>
  var editor_config = {
    path_absolute : "/",
    selector: "textarea",
    plugins: [
      "advlist autolink lists link image charmap print preview hr anchor pagebreak",
      "searchreplace wordcount visualblocks visualchars code fullscreen",
      "insertdatetime media nonbreaking save table contextmenu directionality",
      "emoticons template paste textcolor colorpicker textpattern"
    ],
    toolbar: "insertfile undo redo | styleselect | bold italic | alignleft aligncenter alignright alignjustify | bullist numlist outdent indent | link image media",
    relative_urls: false,
    file_browser_callback : function(field_name, url, type, win) {
      var x = window.innerWidth || document.documentElement.clientWidth || document.getElementsByTagName('body')[0].clientWidth;
      var y = window.innerHeight|| document.documentElement.clientHeight|| document.getElementsByTagName('body')[0].clientHeight;
      var cmsURL = editor_config.path_absolute + 'laravel-filemanager?field_name=' + field_name;
      if (type == 'image') {
        cmsURL = cmsURL + "&type=Images";
      } else {
        cmsURL = cmsURL + "&type=Files";
      }
      tinyMCE.activeEditor.windowManager.open({
        file : cmsURL,
        title : 'Filemanager',
        width : x * 0.8,
        height : y * 0.8,
        resizable : "yes",
        close_previous : "no"
      });
    }
  };
  tinymce.init(editor_config);
</script>
### config
lfm.php
'base_directory' => 'public', 'images_folder_name' => 'images',
### view
post.blade.php
<p>{!! $post->body !!}</p>
{{$post->body}}だと画像が表示されないので注意が必要
殆ど公式に書いてあるので、公式との闘いになりそう