RichTextBox ASP.NET Core WYSIWYG editor
WYSIWYG editing Image gallery upload Content templates
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ASP.NET Core WYSIWYG Editor

The production‑ready rich text editor for every use case

A comprehensive WYSIWYG editor with unmatched reliability, clean HTML output, image upload, and a full suite of customizable features — built for ASP.NET Core teams.

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Trusted by 25,000+ customers worldwide

Sony Intel Nokia Siemens IBM Microsoft

Capabilities

Components for cutting‑edge content creation

From editing to embedding, everything you need in one production-grade editor.

Core Editing

Rich formatting, lists, tables, links, and clean HTML output with precise styling tools.

Image & Media

Upload images, browse galleries, insert videos, and manage media with folder-aware endpoints.

Templates & Content

Pre-built HTML templates, special characters, code insertion, and content snippets for faster authoring.

Responsive Design

Works across desktops, tablets, and phones with consistent behavior and responsive toolbar layout.

Clean HTML Output

Outputs well-formed XHTML 1.0 or HTML 5. Paste from Word and Excel without losing formatting.

Customization

Multiple toolbar presets, skins, resize modes, context menus, and extensible plugin architecture.

Drop-in Tag Helper

Add a rich text editor in minutes

The ASP.NET Core wrapper packages the editor as a Razor Tag Helper. Add it to any form, map the upload endpoint, and your users get a familiar word-like editing surface.

  • Works with Razor Pages and MVC — familiar Web Forms concepts preserved.
  • Built-in upload endpoint with folder-aware image gallery.
  • Forms receive clean HTML back on submit — no extra JavaScript required.
  • Toolbar presets, skins, resize modes — all configurable via Tag Helper attributes.
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MyPage.cshtml 
@page
@model MyPageModel

<form method="post">
    <richtextbox
        asp-for="Body"
        toolbar="full"
        skin="gray"
        height="540px" />
    <button type="submit">Save</button>
</form>

Why RichTextBox?

25,000+ customers have already trusted us

This gives us a solid foundation on which we develop content editing solutions for any use case.

Quality

Crafted to perfection over 21+ years of development. Clean, compact, and extremely fast-loading editor with well-formed HTML output.

Experience

21+ years of experience in rich text editing. 25,000+ customers in 60+ countries. Cross-browser support on desktops, tablets, and phones.

Support

Comprehensive documentation, responsive technical support, and a proven track record of helping teams ship content-rich applications.

RichTextBox in numbers

25,000+

customers

60+

countries

23

languages

21+

years

.NET 8+

ASP.NET Core

Ready to get started?

Download the free trial and add a production-ready WYSIWYG editor to your ASP.NET Core application in minutes.

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