RTBlazorfied 1.0.256

RT Blazorfied

Author: Ryan Kueter
Updated: December, 2025

About

RT Blazorfied HTML Editor is a free .NET library available from the NuGet Package Manager that allows Blazor developers to easily add a rich text box / html editor to their Blazor application. The editor uses Google's Font Icons. It doesn't reference the icon library. However, it does embed .svg versions of those icons so they are customizable. It also uses the shadow DOM to isolate the HTML from inheriting the existing page styles. Because of that, it provides a preview window for the user to view the live page if the style sheets are applied to the host application. Users are also able to add CSS classes to many components allowing them to customize their appearance.

Targets:

• .NET 8 - .NET 10

Features:

• Shortcut Keys
• Button Visibility
• Copy and Taste Content and Tables
• Highly Customized Appearance
• Lists
• Links
• Tables
• Colors and Highlighting
• Images
• Video
• Audio
• PDF Documents
• HTML Pages
• Code Blocks
• Block Quotes

Adding the HTML Editor

Add the JavaScript Reference

Add the following reference to the end of your index.html file:

<script src="_content/RTBlazorfied/js/RTBlazorfied.js"></script>

Add the Element

In this example, the @Html is the html string. This height and width will override those specified in the configuration options.

@using RichTextBlazorfied

<RTBlazorfied @ref="box" @bind-Value="@Html" Height="500px" Width="1000px" />

The element reference provides another way to get the html or plaintext:

private RTBlazorfied? box { get; set; }

private async Task<string?> GetHtml() =>
        await box!.GetHtmlAsync();

private async Task<string?> GetPlainText() =>
        await box!.GetPlainTextAsync();

Configure the Options

RTBlazorfied was designed to allow developers to highly customize the appearance of the rich textbox with the following configuration options:

<RTBlazorfied @bind-Value="@Html" Options="@GetOptions()" />

CSS variables, e.g., var(--my-variable) are interchangeable with these styles. And omitting the ButtonVisibility options will display all the buttons.

public Action<IRTBlazorfiedOptions> GetOptions() => (o =>
{
    o.ToolbarStyles(o =>
    {
        o.BackgroundColor = "#00FF00";
        o.BorderColor = "var(--border-color)";
        o.BorderWidth = "1px";
        o.BorderStyle = "solid";
        o.BorderRadius = "10px 0px";
        o.DropdownBackgroundColor = "var(--background-color)";
        o.DropdownTextColor = "#FFFFFF";
        o.DropdownBackgroundColorHover = "#777777";
        o.DropdownTextColorHover = "#FFFFAA";
    });
    o.ModalStyles(o =>
    {
        o.RemoveCSSClassInputs();
        o.BackgroundColor = "#333333";
        o.TextColor = "#FFFFAA";
        o.TextSize = "20px";
        o.TextFont = "Comic Sans MS";
        o.TextboxBackgroundColor = "#333333"; // Texbox refers to inputs
        o.TextboxTextColor = "#FFFFAA";
        o.TextboxBorderColor = "#FFFFAA";
        o.CheckboxAccentColor = "#FFFFAA";
    });
    o.ButtonStyles(o =>
    {
        o.TextColor = "#ff0000";
        o.TextSize = "30px";
        o.TextFont = "Comic Sans MS";
        o.BackgroundColor = "#0000FF";
        o.BackgroundColorHover = "inherit";
        o.BackgroundColorSelected = "inherit";
        o.BorderColor = "#FFF000";
        o.BorderColorHover = "#FF0000";
        o.BorderColorSelected = "#0000FF";
        o.BorderStyle = "solid";
        o.BorderRadius = "0px";
        o.BorderWidth = "1px";
    });
    o.EditorStyles(o =>
    {
        o.RemoveResizeHandle();
        o.Width = "500px";
        o.Height = "700px";
        o.BorderRadius = "10px";
        o.BoxShadow = "3px 3px 5px 6px #ccc";
        o.BorderStyle = "dotted";
        o.BorderWidth = "10px";
        o.BorderColor = "#FF0000";
    });
    o.ContentStyles(o =>
    {
        o.ContentBoxShadow = "inset 0 0 7px #eee";
        o.BackgroundColor = "#FFFF99";
        o.TextColor = "#FFFFAA";
        o.TextSize = "30px";
        o.TextFont = "Comic Sans MS";
    });
    o.ScrollbarStyles(o =>
    {
        o.Width = "5px";
        o.Opacity = "0.5";
        o.ThumbBackground = "#0000FF";
        o.ThumbBackgroundHover = "#00FFFF";
        o.BackgroundColor = "transparent";
        o.ThumbBorderRadius = "10px";
    });
    o.ButtonVisibility(o =>
    {
        o.ClearAll();
        o.Size = true;
        o.Font = true;
        o.Format = true;
        o.Bold = true;
        o.Italic = true;
        o.Underline = true;
        o.Strikethrough = true;
        o.Subscript = true;
        o.Superscript = true;
        o.TextColor = true;
        o.AlignLeft = true;
        o.AlignCenter = true;
        o.AlignRight = true;
        o.AlignJustify = true;
        o.Copy = true;
        o.Cut = true;
        o.Delete = true;
        o.SelectAll = true;
        o.Image = true;
        o.Link = true;
        o.OrderedList = true;
        o.UnorderedList = true;
        o.Indent = true;
        o.Undo = true;
        o.Redo = true;
        o.Quote = true;
        o.CodeBlock = true;
        o.EmbedMedia = true;
        o.ImageUpload = true;
        o.HtmlView = true;
        o.Preview = true;

        // Dividers
        o.TextStylesDivider = false;
        o.FormatDivider = false;
        o.TextColorDivider = false;
        o.AlignDivider = false;
        o.ActionDivider = false;
        o.ListDivider = false;
        o.MediaDivider = false;
        o.HistoryDivider = false;
    });
});

Shortcut Keys

Bold: Ctrl + B
Italic: Ctrl + I
Underline: Ctrl + U
Strikethrough: Ctrl + D
Subscript: Ctrl + =
Superscript: Ctrl + Shift + [+]
Text Color: Ctrl + Shift + C
Text Background Color: Ctrl + shift + B
Align Left: Ctrl + L
Align Center: Ctrl + E
Align Right: Ctrl + R
Align Justify: Ctrl + J
Cut: Ctrl + X
Copy: Ctrl + C
Paste: Ctrl + V
Select All: Ctrl + A
Ordered List: Ctrl + Shift + O
Unordered List: Ctrl + Shift + U
Increase Indent: Tab
Decrease Indent: Shift + Tab
Insert Link: Ctrl + Shift + K
Insert Image: Ctrl + Shift + I
Insert Quote: Ctrl + Shift + Q
Insert Media: Ctrl + Shift + M
Insert Table: Ctrl + Shift + L
Insert Code Block: Ctrl + Shift + [*]
Undo: Ctrl + Z
Redo: Ctrl + Y
Format: Ctrl + Shift + [D, P, 1, 2, 3, and so on]
Size: Ctrl + Shift + [<, >]
Toggle Code and HTML: Ctrl + Shift + A

Contributions

This project is being developed for free by me, Ryan Kueter, in my spare time. So, if you would like to contribute, please submit your ideas on the Github project page.