syncfusion-react-file-manager

name	syncfusion-react-file-manager
description	Implement Syncfusion React File Manager component for file system navigation and management. Use when users need file browsing, upload/download, file operations (create, delete, rename), multiple views, drag-drop, customization, or accessibility features. Supports local and remote file systems with comprehensive customization options.
metadata	{"author":"Syncfusion Inc","version":"33.1.44"}

Syncfusion React File Manager

A comprehensive guide to implementing the Syncfusion React File Manager component for building file system interfaces with rich features like drag-drop, multi-view support, custom operations, and full accessibility.

Quick Navigation

🚀 Just Getting Started?
→ Read Getting Started for installation and basic setup

🛠️ Need to Build File Operations?
→ Check File Operations (CRUD) for create, read, update, delete patterns

📊 Working with Local Data?
→ See Flat Data Structure for in-memory files and event-driven operations

✅ Need Multiple File Selection?
→ Learn Multiple Selection & Range Selection for Ctrl+Click, Shift+Click, drag selection

⚡ Handling Large File Lists?
→ Use Virtualization for smooth scrolling with 1000+ files

🎨 Want to Customize the UI?
→ See Customization & Styling for theming and layout options

⚙️ Looking for Advanced Features?
→ Explore Advanced Features for performance, custom providers, and API integration

♿ Need Accessibility or Multi-Language?
→ Visit Accessibility & Localization for WCAG and i18n

🔐 Need User Access Control?
→ Learn Access Control for role-based permissions and security

📤 Passing Custom Headers to Server?
→ See Pass Custom Value to Server for setRequestHeader and authentication

🎯 Need Advanced Customization?
→ Check Adding Custom Item to Context Menu and Adding Custom Item to Toolbar

🔧 Want to Enable/Disable Toolbar Items?
→ See Enable/Disable Toolbar Item for programmatic control

🖼️ Customizing Thumbnails & Icons?
→ Learn Customize Custom Thumbnail for icon templates

📁 Customizing Navigation Pane?
→ See Customize Navigation Pane for tree view customization

✨ Pre-selecting Items?
→ Learn Preselect Items for default selections

📦 File Manager Inside Dialog/Tabs?
→ See Nested Items for embedding in other components

When to Use This Skill

Use this skill when you need to:

• Create a file browser interface for your application
• Implement file upload and download functionality
• Build file management features (create, delete, rename, refresh)
• Support multiple view options (details and large icons)
• Add drag-and-drop capability to file management
• Customize context menus, toolbars, and styling
• Integrate accessibility features (keyboard navigation, ARIA)
• Support internationalization and RTL languages
• Connect to local or remote file systems

Component Overview

The File Manager is a graphical user interface component for managing file systems. It enables users to:

• File Operations: Read, create, delete, rename, upload, download, and refresh files
• Multiple Views: Switch between details view (sorted list) and large icons view (thumbnails)
• Navigation: Breadcrumb trails and navigation pane with tree view for hierarchy exploration
• Context Menu: Right-click menus with customizable options
• Drag-and-Drop: Drag files between folders with configurable drop zones
• Accessibility: Full WCAG compliance with keyboard navigation and screen reader support
• Localization: Multi-language support with RTL direction for right-to-left languages
• Customization: Extensive API for styling, theming, and behavior customization

Documentation and Navigation Guide

Core Features

Getting Started & Installation

📄 Read: references/getting-started.md

• Installation and package setup
• Basic file manager implementation
• CSS imports and theme configuration
• Initial configuration and setup
• Connection to file service (AjaxSettings)

File Operations (CRUD)

📄 Read: references/file-operations.md

• Create folders and files
• Read and browse file systems
• Update/rename operations
• Delete files and folders
• Upload and download functionality
• Multi-file selection and bulk operations
• File provider patterns and custom implementations

Views & Navigation

📄 Read: references/views-and-navigation.md

• Details view with columns
• Large icon view with thumbnails
• View switching and configuration
• Breadcrumb navigation control
• Navigation pane (tree view sidebar)
• Toolbar features and layout

Data Management

Flat Data Structure

📄 Read: references/flat-data.md

• Use local JSON data instead of server calls
• FileData interface and properties
• Permission management per item
• Event-driven file operations (create, delete, rename, search)
• State management with React hooks
• Backend synchronization patterns
• Large dataset performance optimization

Multiple Selection & Range Selection

📄 Read: references/multiple-selection.md

• Enable/disable multi-select capability
• Range selection by mouse drag
• Checkbox selection support
• Selection state management
• Selected items API and events
• Pre-selecting items on load
• Keyboard shortcuts (Ctrl+A, Shift+Click)

Preselect Items

📄 Read: references/preselect-the-items.md

• Programmatically select items on load
• Preselect based on file type, size, or date
• Context-aware preselection
• Selection methods (selectAll, clearSelection)
• Get selected items programmatically

Performance & Optimization

Virtualization & Performance

📄 Read: references/virtualization.md

• Enable virtual scrolling for large datasets
• Dynamic loading of files and folders
• Viewport-based rendering optimization
• Module injection and setup
• Performance limitations and workarounds
• Best practices for handling 1000+ items

User Interactions

Drag-and-Drop Features

📄 Read: references/drag-and-drop.md

• Enable/disable drag-drop functionality
• Drop area configuration
• Event handling (fileDragStart, fileDragStop, fileDropped)
• Cross-folder drag-drop
• Custom drag-drop behavior

Customization & Styling

📄 Read: references/customization.md

• Context menu customization
• Toolbar customization
• Details view column customization
• Navigation pane customization
• Tooltip customization
• Show/hide file extensions and hidden files
• Thumbnail configuration for large icons view
• CSS class and theme customization

Advanced Customization

Adding Custom Item to Context Menu

📄 Read: references/adding-custom-item-to-context-menu.md

• Add custom menu items to context menu
• Add icons to menu items
• Handle menu click events
• Conditional menu items based on file properties
• Dynamic menu customization

Adding Custom Item to Toolbar

📄 Read: references/adding-custom-item-to-toolbar.md

• Modify default toolbar items
• Add custom toolbar items
• Custom templates for toolbar
• Toolbar click handling
• Custom buttons, checkboxes, and dropdowns

Enable/Disable Toolbar Item

📄 Read: references/enable-disable-toolbar-item.md

• Enable/disable toolbar items programmatically
• Enable/disable based on selection
• Role-based toolbar control
• Disable during operations
• Permission-based toolbar control

Customize Custom Thumbnail

📄 Read: references/customize-custom-thumbnail.md

• Hide/show thumbnails
• Custom templates for large icon view
• File type-based icons
• Size-based color coding
• Date-based icon indicators

Customize Navigation Pane

📄 Read: references/customize-navigation-items.md

• Control navigation pane visibility and width
• Custom templates for navigation nodes
• Add file counts and metadata
• Color-coded folders
• Icon-based navigation styling
• Responsive navigation pane

Nested Items

📄 Read: references/nested-items.md

• Embed File Manager inside Dialog
• Embed File Manager inside Tab
• Embed File Manager inside Splitter
• File selector with File Manager
• Multi-panel layouts with File Manager

Security & Integration

Access Control

📄 Read: references/access-control.md

• Define access permissions for folders/files
• Permission types (Allow/Deny)
• Role-based access control
• Access rules for different user roles
• Backend permission validation

Pass Custom Value to Server

📄 Read: references/pass-custom-value-to-server.md

• Setting custom HTTP headers with setRequestHeader
• User authentication headers
• User identification headers
• Tracking file operations
• Department-based access
• Download operation customization
• Image loading customization
• Complete server integration patterns

Accessibility & Localization

Accessibility & Localization

📄 Read: references/accessibility-localization.md

• WCAG 2.1 compliance
• Keyboard navigation (arrow keys, enter, delete)
• ARIA attributes and roles
• Screen reader support
• Internationalization (i18n)
• Right-to-left (RTL) support
• Date and number formatting for different locales

Advanced Features

Advanced Features

📄 Read: references/advanced-features.md

• Custom file system provider implementation
• API integration patterns
• Performance optimization techniques
• Error handling and edge cases
• Event system and hooks
• Advanced search and filtering
• Custom sorting and comparison
• Nested components (File Manager in Dialog/Tabs)

Quick Start Example

import React from 'react';
import { FileManagerComponent, Inject, DetailsView, NavigationPane, Toolbar } from '@syncfusion/ej2-react-filemanager';
import '@syncfusion/ej2-base/styles/material.css';
import '@syncfusion/ej2-icons/styles/material.css';
import '@syncfusion/ej2-inputs/styles/material.css';
import '@syncfusion/ej2-popups/styles/material.css';
import '@syncfusion/ej2-buttons/styles/material.css';
import '@syncfusion/ej2-splitbuttons/styles/material.css';
import '@syncfusion/ej2-navigations/styles/material.css';
import '@syncfusion/ej2-layouts/styles/material.css';
import '@syncfusion/ej2-grids/styles/material.css';
import '@syncfusion/ej2-react-filemanager/styles/material.css';

function App() {
  const hostUrl = "url";

  return (
    <div>
      <FileManagerComponent
        id="file"
        ajaxSettings={{
          url: hostUrl + "api/FileManager/FileOperations",
          getImageUrl: hostUrl + "api/FileManager/GetImage",
          uploadUrl: hostUrl + "api/FileManager/Upload",
          downloadUrl: hostUrl + "api/FileManager/Download"
        }}
        view="Details"
        height="375px"
      >
        <Inject services={[DetailsView, NavigationPane, Toolbar]} />
      </FileManagerComponent>
    </div>
  );
}

export default App;

Methods Reference

The File Manager provides programmatic methods to control operations:

Selection & View Control

Method	Parameters	Purpose
selectAll()	-	Select all files and folders in current path
clearSelection()	-	Deselect all items
getSelectedFiles()	-	Get array of selected file objects

File Operations

Method	Parameters	Purpose
createFolder(name?)	name: string (optional)	Create new folder; opens dialog if name not provided
renameFile(id?, name?)	id: string, name: string	Rename file/folder; opens dialog if params not provided
deleteFiles(ids?)	ids: string[]	Delete files/folders; opens confirmation if not provided
openFile(id)	id: string	Open file or navigate to folder
downloadFiles(ids?)	ids: string[] (optional)	Download selected files; downloads selection if not provided
uploadFiles()	-	Open file upload dialog

Navigation & Refresh

Method	Parameters	Purpose
refreshFiles()	-	Refresh current folder contents
refreshLayout()	-	Refresh component layout
traverseBackward()	-	Navigate to parent directory
filterFiles(filterData?)	filterData: Object	Apply custom filter to displayed files

Toolbar & Menu Control

Method	Parameters	Purpose
disableToolbarItems(items)	items: string[]	Disable specific toolbar buttons
enableToolbarItems(items)	items: string[]	Enable specific toolbar buttons
getToolbarItemIndex(item)	item: string	Get toolbar item position
disableMenuItems(items)	items: string[]	Disable context menu items
enableMenuItems(items)	items: string[]	Enable context menu items
getMenuItemIndex(item)	item: string	Get context menu item position

Dialog Control

Method	Parameters	Purpose
closeDialog()	-	Close any open dialog

Component Lifecycle

Method	Parameters	Purpose
destroy()	-	Clean up component resources

Events Reference

File Manager provides comprehensive event hooks for customization:

File Selection Events

Event	Args	Triggered When
fileSelection	FileSelectionEventArgs	File/folder about to be selected (cancelable)
fileSelect	FileSelectEventArgs	File/folder is selected/unselected

File Navigation Events

Event	Args	Triggered When
fileOpen	FileOpenEventArgs	File/folder about to be opened
fileLoad	FileLoadEventArgs	File/folder item is rendered

File Operation Events

Event	Args	Triggered When
beforeFolderCreate	FolderCreateEventArgs	Folder creation requested (cancelable)
folderCreate	FolderCreateEventArgs	Folder successfully created
beforeRename	RenameEventArgs	Rename operation requested (cancelable)
rename	RenameEventArgs	File/folder successfully renamed
beforeDelete	DeleteEventArgs	Deletion requested (cancelable)
delete	DeleteEventArgs	File/folder successfully deleted
beforeMove	MoveEventArgs	Move/copy operation started
move	MoveEventArgs	File/folder successfully moved/copied

Drag & Drop Events

Event	Args	Triggered When
fileDragStart	FileDragEventArgs	Drag operation begins
fileDragging	FileDragEventArgs	Dragging is in progress
fileDragStop	FileDragEventArgs	Drag about to be dropped (cancelable)
fileDropped	FileDragEventArgs	File/folder successfully dropped

Upload Events

Event	Args	Triggered When
uploadListCreate	UploadListCreateArgs	Upload UI created (pre-upload validation)
beforeDownload	BeforeDownloadEventArgs	Download requested

Menu & Context Events

Event	Args	Triggered When
menuOpen	MenuOpenEventArgs	Context menu about to open
menuClose	MenuCloseEventArgs	Context menu closed
menuClick	MenuClickEventArgs	Context menu item clicked

Search & Dialog Events

Event	Args	Triggered When
search	SearchEventArgs	User types in search box
beforePopupOpen	BeforePopupOpenCloseEventArgs	Dialog about to open
popupOpen	PopupOpenCloseEventArgs	Dialog opened
beforePopupClose	BeforePopupOpenCloseEventArgs	Dialog about to close
popupClose	PopupOpenCloseEventArgs	Dialog closed

AJAX & Server Events

Event	Args	Triggered When
beforeSend	BeforeSendEventArgs	AJAX request sent (add custom headers)
success	SuccessEventArgs	AJAX request succeeded
failure	FailureEventArgs	AJAX request failed
beforeImageLoad	BeforeImageLoadEventArgs	Image/thumbnail request sent

Lifecycle Events

Event	Args	Triggered When
created	Object	Component initialization complete
destroyed	Object	Component destroyed

Toolbar Events

Event	Args	Triggered When
toolbarCreate	ToolbarCreateEventArgs	Toolbar being created
toolbarClick	ToolbarClickEventArgs	Toolbar button clicked

Common Patterns

1. Basic Setup Pattern

import React from 'react';
import { FileManagerComponent, Inject, DetailsView, NavigationPane, Toolbar } from '@syncfusion/ej2-react-filemanager';
import '@syncfusion/ej2-react-filemanager/styles/material.css';

export default function BasicFileManager() {
  return (
    <FileManagerComponent
      id="file"
      ajaxSettings={{
        url: "url",
        getImageUrl: "url",
        uploadUrl: "url",
        downloadUrl: "url"
      }}
      view="Details"
      height="500px"
    >
      <Inject services={[DetailsView, NavigationPane, Toolbar]} />
    </FileManagerComponent>
  );
}

Setup Steps:

1. Install @syncfusion/ej2-react-filemanager and all peer dependencies
2. Import CSS theme (material, bootstrap, bootstrap4, fabric, or tailwind)
3. Configure ajaxSettings endpoints
4. Choose view (Details or LargeIcons)
5. Inject required services (features to enable)

2. File Service Backend Pattern

Expected Endpoint Structure:

ajaxSettings={{
  url: "url",
  getImageUrl: "url",
  uploadUrl: "url",
  downloadUrl: "url"
}}

Backend Implementation (ASP.NET Core Example):

[ApiController]
[Route("api/[controller]")]
public class FileManagerController : ControllerBase
{
    [HttpPost("FileOperations")]
    public IActionResult FileOperations(
        [FromForm] string action,
        [FromForm] string path,
        [FromForm] string name = null,
        [FromForm] IFormFile uploadFiles = null)
    {
        switch (action)
        {
            case "read":
                // Return files and folders at given path
                return Ok(new { files = GetDirectoryContents(path) });
            case "create":
                // Create new folder
                Directory.CreateDirectory(Path.Combine(path, name));
                return Ok();
            case "delete":
                // Delete files/folders
                return Ok();
            case "rename":
                // Rename file/folder
                return Ok();
            case "move":
                // Move or copy files
                return Ok();
            default:
                return BadRequest("Invalid action");
        }
    }

    [HttpGet("GetImage")]
    public IActionResult GetImage([FromQuery] string path)
    {
        // Return thumbnail or image file
        var filePath = ResolvePath(path);
        return PhysicalFile(filePath, "image/jpeg");
    }

    [HttpPost("Upload")]
    public IActionResult Upload([FromForm] IFormFile uploadFiles, [FromForm] string path)
    {
        // Handle file upload
        var filePath = Path.Combine(path, uploadFiles.FileName);
        using (var stream = new FileStream(filePath, FileMode.Create))
        {
            uploadFiles.CopyTo(stream);
        }
        return Ok();
    }

    [HttpGet("Download")]
    public IActionResult Download([FromQuery] string path)
    {
        // Return file for download
        var file = System.IO.File.ReadAllBytes(path);
        var fileName = Path.GetFileName(path);
        return File(file, "application/octet-stream", fileName);
    }
}

3. State Management Pattern

import React, { useRef, useState } from 'react';

export default function FileManagerWithState() {
  const fileManagerRef = useRef(null);
  const [selectedFiles, setSelectedFiles] = useState([]);
  const [currentPath, setCurrentPath] = useState('/');

  const handleFileSelect = (args) => {
    setSelectedFiles(args.fileDetails);
  };

  const handleCreateFolder = () => {
    fileManagerRef.current?.createFolder('NewFolder');
  };

  const handleDeleteSelected = () => {
    const ids = selectedFiles.map(f => f.name);
    fileManagerRef.current?.deleteFiles(ids);
  };

  return (
    <div>
      <div className="toolbar">
        <button onClick={handleCreateFolder}>Create Folder</button>
        <button onClick={handleDeleteSelected} disabled={!selectedFiles.length}>
          Delete ({selectedFiles.length})
        </button>
        <span>Path: {currentPath}</span>
      </div>
      <FileManagerComponent
        ref={fileManagerRef}
        fileSelect={handleFileSelect}
        ajaxSettings={{...}}
        height="400px"
      >
        <Inject services={[DetailsView, NavigationPane, Toolbar]} />
      </FileManagerComponent>
    </div>
  );
}

4. Event-Driven Custom Logic Pattern

<FileManagerComponent
  // Prevent deletion of certain files
  beforeDelete={(args) => {
    if (args.fileDetails[0].name.startsWith('.')) {
      args.cancel = true;
      alert('Cannot delete system files');
    }
  }}
  
  // Add headers to AJAX requests
  beforeSend={(args) => {
    args.headers = { ...args.headers, 'Authorization': `Bearer ${token}` };
  }}
  
  // Validate before upload
  uploadListCreate={(args) => {
    args.fileDetails.forEach(file => {
      if (file.size > 5000000) { // 5MB limit
        args.cancel = true;
      }
    });
  }}
  
  // Track successful operations
  success={(args) => {
    console.log('Operation successful:', args.action, args.result);
  }}
  
  // Handle errors
  failure={(args) => {
    console.error('Operation failed:', args.error);
  }}
/>

5. Customization Pattern

<FileManagerComponent
  // Customize toolbar
  toolbarSettings={{
    items: ['NewFolder', 'Upload', '|', 'Cut', 'Copy', 'Paste', '|', 'Delete', 'Download'],
    visible: true
  }}
  
  // Customize context menu
  contextMenuSettings={{
    file: ['Open', '|', 'Cut', 'Copy', '|', 'Delete', 'Rename', '|', 'Details'],
    folder: ['Open', '|', 'Cut', 'Copy', 'Paste', '|', 'Delete', 'Rename'],
    layout: ['SortBy', 'View', 'Refresh', '|', 'NewFolder', 'Upload'],
    visible: true
  }}
  
  // Customize columns in details view
  detailsViewSettings={{
    columns: [
      {
        field: 'name',
        headerText: 'Name',
        minWidth: 120,
        template: '<span class="custom-name">${name}</span>'
      },
      {
        field: '_fm_modified',
        headerText: 'Modified',
        type: 'dateTime',
        format: 'MMMM dd, yyyy HH:mm',
        minWidth: 120
      },
      {
        field: 'size',
        headerText: 'Size',
        minWidth: 90,
        template: '<span>${size}</span>'
      }
    ]
  }}
  
  // Customize navigation pane
  navigationPaneSettings={{
    maxWidth: '650px',
    minWidth: '240px',
    visible: true,
    sortOrder: 'None'
  }}
/>

6. Performance Optimization Pattern

<FileManagerComponent
  // Enable virtualization for large datasets
  enableVirtualization={true}
  
  // Enable persistence to maintain state
  enablePersistence={true}
  
  // Configure search settings
  searchSettings={{
    allowSearchOnTyping: true,
    filterType: 'contains',
    ignoreCase: true
  }}
  
  // Configure upload settings
  uploadSettings={{
    autoUpload: true,
    minFileSize: 0,
    maxFileSize: 30000000, // 30MB
    allowedExtensions: '.pdf,.doc,.docx,.xls,.xlsx,.ppt,.pptx',
    autoClose: false,
    directoryUpload: false,
    sequentialUpload: false
  }}
  
  // Sort optimization
  sortBy="name"
  sortOrder="Ascending"
/>

Key Props

Core Configuration

Prop	Type	Default	Purpose
ajaxSettings	Object	See below	Configure backend endpoints for file operations
path	string	"/"	Current folder path
view	string	"LargeIcons"	View type: "Details" or "LargeIcons"
width	string	"100%"	Component width
height	string	"400px"	Component height

Display & Behavior

Prop	Type	Default	Purpose
showFileExtension	boolean	true	Display file extensions
showHiddenItems	boolean	false	Display hidden files/folders
showThumbnail	boolean	true	Show thumbnails in large icons view
showItemCheckBoxes	boolean	true	Display checkboxes on hover
sortBy	string	"name"	Sort field: "name", "dateModified", "size"
sortOrder	string	"Ascending"	Sort direction: "Ascending", "Descending", or "None"
enableRtl	boolean	false	Right-to-left layout support
locale	string	"en-US"	Localization language code

Selection & Navigation

Prop	Type	Default	Purpose
allowMultiSelection	boolean	true	Allow selecting multiple files
enableRangeSelection	boolean	false	Select multiple items by dragging mouse
selectedItems	string[]	[]	Initially selected file names
allowDragAndDrop	boolean	false	Enable drag-drop operations

Performance & Features

Prop	Type	Default	Purpose
enableVirtualization	boolean	false	Virtual scrolling for large datasets
enablePersistence	boolean	false	Persist view, path, and selection state
enableHtmlSanitizer	boolean	true	Sanitize HTML to prevent XSS attacks
cssClass	string	""	Custom CSS class for styling
rootAliasName	string	null	Display name for root folder
popupTarget	HTMLElement	null	Dialog popup target element

Data & Settings Objects

Prop	Type	Purpose
fileSystemData	Object[]	Flat data structure for local files
contextMenuSettings	Object	Customize context menu items
toolbarSettings	Object	Configure toolbar items and layout
detailsViewSettings	Object	Customize columns and column widths
navigationPaneSettings	Object	Configure sidebar behavior and appearance
searchSettings	Object	Configure search filtering options
uploadSettings	Object	Configure upload behavior
sortComparer	Function	Custom sorting function
largeIconsTemplate	string | Function	Custom template for large icons view
navigationPaneTemplate	string | Function	Custom template for navigation pane

AJAX Settings Configuration

ajaxSettings={{
  url: "url",     // Main CRUD endpoint (required)
  getImageUrl: "url",   // Thumbnail retrieval
  uploadUrl: "url",       // File upload endpoint
  downloadUrl: "url",   // File download endpoint
  // Optional: Add custom headers
  // headers: { 'Authorization': 'Bearer token' }
}}

Backend Endpoint Expectations:

• url - Receives POST requests with action parameter:

  • read: List files in path
  • create: Create new folder
  • delete: Delete file/folder
  • rename: Rename file/folder
  • move: Move/copy file (copy or cut)
  • search: Search files
  • upload: Handle file uploads
  • download: Prepare download

• getImageUrl - GET request with path parameter for thumbnail image URL

• uploadUrl - POST multipart form data with file upload

• downloadUrl - Initiate file download stream

Common Use Cases

Case 1: Document Management System

Implement a document browser with upload, download, and folder organization:

• Use Details view for metadata display
• Configure context menu for document operations
• Add search functionality
• Implement access control on backend

Case 2: Media File Browser

Build a gallery with image/video thumbnails:

• Use Large Icons view for thumbnail display
• Configure getImageUrl for preview generation
• Implement lazy loading for performance
• Add drag-drop for organization

Case 3: Admin File Manager

Create an internal file management tool:

• Customize toolbar with admin-specific actions
• Implement advanced context menu options
• Add logging and audit trails
• Configure permissions on backend

Case 4: Localized File Manager

Support multiple languages and RTL:

• Set locale to user's language
• Enable enableRtl for RTL languages
• Customize context menu labels per language
• Format dates and sizes per locale

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Next Steps

1. Start: Read references/getting-started.md for installation and basic setup
2. Implement: Choose the feature references that match your requirements
3. Customize: Review references/customization.md for styling and configuration
4. Optimize: Check references/advanced-features.md for performance and edge cases
5. Accessibility: Ensure compliance with references/accessibility-localization.md

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