A critical vulnerability was discovered in React Server Components (Next.js). Our systems remain protected but we advise to update packages to newest version. Learn More

Ha Bui
Ha Bui  -  CMS
Aug 24, 2022
  2693
(3 votes)

How to integrate TinyMCE cloud plugin with EPiServer

Hi everyone,

Recently, we got many questions regarding How to integrate the TinyMCE external cloud plugin (SpellCheckerPro for instance) with EPiServer CMS and EPiServer.CMS.TinyMCE add-on.

Did you try that before? And got a headache with kind of below errors?

Don't worry! No more headaches with the recent release of EPiServer TinyMCE!

For the SpellCheckerPro plugin then few lines of the configuration below will help you easy to integrate with EPiServer CMS:

  1. Prerequisites
    TinyMCE cloud API Key
  2. EPiServer TinyMCE Initialization
    context.Services.Configure<TinyMceConfiguration>(config =>
                {
                    config.Default()
                        .AddExternalPlugin("tinymcespellchecker", "https://cdn.tiny.cloud/1/<YOUR_API_KEY>/tinymce/4.9.11-104/plugins/tinymcespellchecker/plugin.min.js")
                        .AddEpiserverSupport()
                        .Toolbar("spellchecker language spellcheckdialog")
                        .AddSetting("spellchecker_rpc_url", "https://spelling.tiny.cloud")
                        .AddSetting("spellchecker_api_key", "<YOUR_API_KEY>");
                }

    Note: Because EPiServer CMS TinyMCE is using TinyMCE v4 so please choose the correct version of the SpellCheckerPro plugin. Otherwise, it won't work as expected!

  3. Screenshots

Easy right? I hope that helped you!

Aug 24, 2022

Comments

Gaurav Bhatia
Gaurav Bhatia Aug 29, 2022 07:08 AM

Thanks for posting this!

I have one question: why do we need to mention the "spellchecker_rpc_url" setting? I think its already referenced in the plugin itself (https://cdn.tiny.cloud/1/<YOUR_API_KEY>/tinymce/4.9.11-104/plugins/tinymcespellchecker/plugin.min.js).

Please login to comment.
Latest blogs
From 12 to 13 preview: A Developer's Guide to testing an Optimizely CMS 13 Alloy Site

The release of Optimizely CMS 13 marks a significant step forward, embracing a more composable and headless-first architecture. While this unlocks...

Robert Svallin | Jan 23, 2026

A day in the life of an Optimizely OMVP: Opti North Manchester - January 2026 Meetup Recap

There's something special about the Optimizely community in the North. On 22nd January, we gathered at the Everyman Cinema in Manchester for the...

Graham Carr | Jan 23, 2026

Beyond the widget - making Optimizely Content Recommendations work for you

Optimizely recommendation data you can render your way. A frontend-focused guide to bypassing the widget, with practical query filtering advise and...

Tom Robinson | Jan 22, 2026 |

Announcing the Jhoose Commerce API for Optimizely Commerce Connect

A layered framework for Optimizely Commerce Connect that accelerates delivery, supports headless architecture, and simplifies carts, checkout, and...

Andrew Markham | Jan 22, 2026 |