Ha Bui
Optimizely
Ha Bui  -  CMS
Aug 24, 2022
visibility 3209
star star star star star
(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).

error Please login to comment.
Latest blogs
What Mattered More Than the API. Part 5: Process Uptime and the Benchmark

A long-running app imported 7x slower than a freshly restarted one, the finding that beat every API optimization, plus runnable benchmark jobs.

Stanisław Szołkowski | Oct 28, 2026 |

Virtual Teammates in Optimizely Mark: a hands-on first look

Virtual Teammates are the most interesting thing Optimizely has shipped on its agent platform this year, and the hardest to evaluate from a demo....

Minesh Shah (Netcel) | Oct 27, 2026

I Turned My Tech Bookshelf Into an MCP Server (in .NET)

Overview If you are like me you have been buying tech ebooks for years. Manning early access books, Packt and Apress bundles, Humble Bundles, a few...

KennyG | Oct 26, 2026

Time Zone-Aware Scheduled Publishing in Optimizely CMS 13

Scheduling content for audiences in different time zones is a common requirement, especially for websites managed by editors across multiple region...

Mardy | Oct 26, 2026