Design organized content using blocks such as headings, lists, quotes, and tables.
Quickly add and manage blocks with intuitive slash commands and toolbars.
Apply text formatting and insert inline elements like links and labels for enhanced clarity.

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Overview

The Blazor Block Editor is a modular, block-based content editor for web applications. It offers an intuitive and flexible interface for creating sophisticated, structured documents using interactive content blocks. It supports a variety of block types and text-formatting tools for precise content authoring and handling.

Blazor Block Editor control.

Get started in minutes

Easily get started with the Blazor Block Editor using a few simple lines of C# code as demonstrated below. Also explore our Blazor Block Editor example that shows you how to render and configure the Block Editor.

<SfBlockEditor><SfBlockEditor>

Supported block types

The Blazor Block Editor includes a wide range of block types for building structured content. Each type serves a unique purpose and can be inserted, formatted, and managed easily.

Blazor Block Editor with command menu.

Blazor Block Editor with paragraph.

Paragraph

Standard paragraph blocks form the foundation of content creation. They allow rich text formatting, support inline elements, and can be easily converted into other block types.

Blazor Block Editor with heading.

Heading (H1-H4)

Heading blocks provide four levels of hierarchy to organize content clearly. Each level offers distinct styling and semantic meaning for accessibility.

Blazor Block Editor with toggle paragraph.

Toggle paragraph

Toggle paragraph blocks create collapsible sections that can show or hide content. They are ideal for FAQs or progressive disclosure.

Blazor Block Editor with toggle heading.

Toggle heading (H1-H4)

Toggle heading blocks combine structural clarity with collapsible functionality, saving space while maintaining hierarchy.

Blazor Block Editor with checklist.

Checklist

Interactive checklist blocks enable users to build task lists with selectable checkboxes. Each item can be marked complete or incomplete, making them perfect for to-do lists, requirements, or any content that needs progress tracking.

Blazor Block Editor with bullet list.

Bullet list

Unordered bullet lists present information in a clear, structured format. The editor supports nested lists with multiple indentation levels, allowing users to create detailed and organized content hierarchies effortlessly.

Blazor Block Editor with numbered list.

Numbered list

Ordered lists provide sequential organization with automatic numbering and nesting. They are ideal for procedures, steps, or ranked content.

Blazor Block Editor with quote.

Quote

Quote blocks highlight important text or citations with distinctive styling, making them stand out for emphasis.

Blazor Block Editor with divider.

Divider

Divider blocks insert horizontal lines to visually separate sections, improving readability and layout clarity.

Blazor Block Editor with callout.

Callout

Callout blocks draw attention to specific content using colored backgrounds and icons, perfect for tips, warnings, or notes.

Blazor Block Editor with image.

Image

Image blocks allow users to insert and resize images, supporting various formats and alt text for accessibility.

Blazor Block Editor with table.

Table

Table block lets you organize information in a structured grid format, making it ideal for presenting comparisons, schedules, or any tabular data. It provides a clean and organized way to display content for better readability and clarity.

The editor includes an inline toolbar that appears when text is selected, offering options like bold, italic, underline, subscript, superscript, text case changes, and color adjustments for text and background.

Blazor Block Editor built-in toolbar.

Blazor Block Editor paste Cleanup.

Paste cleanup

The editor offers built-in options to paste content with images to the editor from by filtering out tags, attributes, and styles. Additionally, there are options to choose whether the content should be pasted as plain text, cleaned styles, or source-formatting styles.

Text formatting

Apply inline styles such as bold, italic, underline, and strikethrough directly within blocks to create visually rich content without breaking the editing flow.

Blazor Block Editor inline formatting toolbar.

Editor menus

The Blazor Block Editor provides intuitive menus for managing blocks efficiently. These menus keep essential actions easily accessible, improving productivity and user experience.

Blazor Block Editor with action menu.

Hover over any block to reveal the action button, which offers quick options such as duplicate, delete, and transform. These actions are context-aware and vary based on the selected block type, ensuring smooth editing workflows.

Blazor Block Editor with context menu.

Right-click anywhere in the editor to open a context menu with relevant options like cut, copy, paste, and other commands based on the current selection or cursor position. This feature simplifies editing and speeds up common tasks.

Inline content

The editor supports embedding inline elements within text blocks to enrich content and provide additional functionality:

Blazor Block Editor with text content.

Text

Standard text with full formatting options, including bold, italic, underline, and color styling.

Blazor Block Editor with link content.

Link

Insert hyperlinks to external websites, internal pages, or email addresses for interactive content.

Blazor Block Editor with mention content.

Mention

Tag users or entities with styled mentions that can provide context or trigger notifications.

Blazor Block Editor with label content.

Label

Use labels or tags to categorize content and add metadata for better organization.

Additional features

Cut, copy, and paste

Perform standard clipboard operations for quick content management.

Undo and Redo manager

Track changes with a customizable history, allowing multiple undo and redo steps.

Print Block Editor content

Print the editor’s content programmatically while preserving applied formatting.

Touch-friendly and responsive

The Blazor Block Editor is optimized for touch interactions and responsive layouts. It supports gestures for formatting and navigation, ensuring a seamless experience across mobile, tablet, and desktop devices.

Accessibility

Built-in and customizable themes

The editor comes with several built-in themes, including Tailwind CSS, Bootstrap 4 and 5, Material, Tailwind, Fabric, Fluent, and high-contrast. Developers can also customize these themes to match application branding.

Developer-friendly APIs

A rich set of client-side APIs is available for developers to extend functionality, integrate custom features, and optimize content editing workflows.

The editor supports full keyboard navigation, enabling users to add blocks, perform actions, indent, select, and format content without relying on a mouse.

Screen readers

Compliant with WAI-ARIA standards, the editor provides high-contrast UI elements and descriptive labels for assistive technologies, ensuring accessibility for all users.

Right to left (RTL)

RTL rendering is supported for languages such as Arabic, Farsi, and Hebrew, adjusting text direction and layout for better usability.

Our comprehensive competitor comparison of Blazor components will guide you to the perfect choice.

145+ UI components

1200+ interactive Blazor demos

3.3M+ downloads

Explore Complete Blazor Comparison

Other supported frameworks

The Block Editor is available for the Angular, JavaScript, Vue, ASP.NET Core, and ASP.NET MVC frameworks. Explore its platform-specific options through the following links:

Supported browsers

The Blazor Block Editor works well with all modern web browsers, including Chrome, Firefox, Edge, Safari, and Opera.

Supported browsers in Blazor Block Editor.

ALL COMPONENTS

SMART COMPONENTS

GRIDS

DATA VISUALIZATION

CALENDARS

FILE VIEWERS & EDITORS

DROPDOWNS

NAVIGATION

INPUTS

LAYOUT

BUTTONS

INTERACTIVE CHAT

FORMS

NOTIFICATION

Frequently Asked Questions

✅ Why should you choose Syncfusion Blazor Block Editor?

Syncfusion Blazor Block Editor provides the following features:

An intuitive interface for creating rich, structured documents using interactive content blocks.
Text formatting and inline elements like links and labels.
Interactive checklist blocks to create task lists with clickable checkboxes.
Blocks like headings, lists, quotes, and quote for creating structured content.
Simple configuration and API.
Supports all modern browsers.
Mobile-touch friendly and responsive.

✅ How is this different from a traditional rich text editor?

Traditional editors treat content as a single flow of text. The Blazor Block Editor separates content into independent blocks (e.g., paragraph, image, checklist), allowing for more flexibility, better structure, and enhanced user control over layout and formatting.

✅ Is the editor accessible and WCAG compliant?

Absolutely. The Blazor Block Editor includes WAI-ARIA roles, full keyboard navigation, high-contrast themes, and RTL support, ensuring it’s usable by all users and meets accessibility standards by default.

✅ Does the editor support mobile devices and touch input?

Yes. It’s fully responsive and touch-friendly, supporting gestures and adaptive layouts for seamless editing across desktops, tablets, and smartphones.

✅ What is a Blazor Block Editor?

A Blazor Block Editor is a block-based editor that structures content using modular, movable blocks—like paragraphs, images, lists, and quote. This editing approach offers greater flexibility and control compared to traditional block editors, making it ideal for modern web apps like documentation tools, wikis, and content builders.

✅ Can I customize the blocks or create my own?

Yes. The editor includes developer-friendly APIs to create, register, and render custom block types. You can extend existing behaviors or build new content elements like embedded widgets, diagrams, or AI prompts.

✅ What are the available theming options?

You can instantly apply themes like Tailwind CSS, Bootstrap 5/4, Material, Fluent, Fabric, or high contrast. You can customize styles via tokens or CSS overrides to match your app’s design system.

✅ Is there support for printing or exporting the content?

Yes. You can print the editor’s content programmatically with styling intact. You can convert the block data into HTML or integrate custom export workflows for exporting.

Our Customers Love Us

Having an excellent set of tools and a great support team, Syncfusion^® reduces customers’ development time.
Here are some of their experiences.

Blazor components

The speed how they adding new Blazor controls and update theirs functionality. I am using Blazor components. Searching for Blazor components I found that Syncfusion very fast adopted theirs controls for new development platform. Tech support is fast and excellent. The best of best is that they provide free controls for small business.

Igor L,

CEO, Small-Business

Syncfusion objects with a Blazor

I have used some of the Syncfusion objects with a Blazor application. The support group has always been very helpful.

Kris B,

Software Development Consultant, Small-Business

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