mdn/browser-compat-data

Features

• Browser Compatibility & Utilities - Provides structured JSON data for checking browser feature support across web technologies.
• Browser Compatibility - Retrieves structured JSON data detailing which browser versions support a given web API, interface, or feature.
• Web Standards & APIs - Provides a comprehensive, categorized index of all standard web APIs and their associated interfaces.
• Browser Compatibility Data Pipelines - Provides an automated pipeline that aggregates browser compatibility data from multiple sources into a structured JSON schema.
• Dot-Separated Feature Indexes - Organizes compatibility data using a dot-separated hierarchical key structure for fast feature lookups.
• JSON Schema Modeling - Structures all browser compatibility data as a typed JSON tree validated against a strict JSON schema.
• Versioned Data Stores - Maintains a git-based versioned store of compatibility data, enabling historical queries and change tracking.
• Contribution Workflows - Implements a standardized workflow for accepting and validating community-submitted JSON changes via pull requests.
• Browser-Version Support Matrices - Ships a matrix model that maps browser identifiers and version ranges to support statuses for every tracked feature.
• Web Technology Support Queries - Ships a structured query interface for looking up browser support across web technology categories.
• Network Traffic Analyzers - Ships browser-based tools for monitoring, debugging, and analyzing HTTP request and response traffic.
• HTTP Request Interceptors - Provides middleware components that intercept and modify HTTP requests and responses for cross-cutting concerns.
• Session & Cookie Handlers - Provides the canonical API for reading and setting browser cookies to maintain user sessions.
• Compatibility Reference Queries - Provides structured queries for browser compatibility data by technology domain.
• Development Tool Extenders - Provides interfaces for registering custom panels and tools within the browser's development environment.
• Browser Extension Toolbar Buttons - Ships a structured dataset for adding toolbar buttons in browser extensions.
• User-Configurable Settings - Provides a dedicated options page where users configure extension preferences.
• Browser Compatibility Queries - Provides a query interface to check browser compatibility status for any web API or interface.
• Compatibility Data Lookups - Accesses a structured JSON tree of browser compatibility data for any web technology feature.
• Cross-Browser Extension Frameworks - Ships a framework for packaging web code into installable extensions that run across multiple browser engines.
• Feature Support Workflows - Enables workflows for verifying feature support across browser engines.
• Lifecycle Content Modifiers - Alters the content or behavior of a loaded webpage by injecting scripts and styles.
• Feature Support Verification - Provides data for verifying browser support of web APIs before use in projects.
• SMIL Animations - Defines timing and layout of SVG elements using SMIL syntax for interactive multimedia presentations.
• MathML References - Lists all MathML elements and attributes with documentation and browser compatibility information.
• Browser Bookmark Management - Provides a dedicated API for reading, creating, moving, and deleting browser bookmarks.
• MathML Editors - Provides editors and authoring tools to create and integrate MathML markup into web content.
• HTTP Cache Headers - Documents management of HTTP headers that control browser and proxy caching behavior.
• Compatibility Data Integrations - Provides data that can be integrated into developer tools for compatibility checks.
• System Clipboard Access - Reads from and writes to the system clipboard from within an extension.
• Browser Compatibility Data Integrations - Provides the dataset that powers IDE and linter integrations for flagging unsupported browser features.
• Dynamic SVG Manipulation - Scripts SVG content through event handling, interactivity, and DOM manipulation using the SVG DOM API.
• Vector Graphics Renderers - Describes two-dimensional vector graphics in XML text files that scale cleanly without quality loss.
• Byte-Range Requesting - Documents the use of HTTP range headers to fetch specific byte segments of a resource.
• WebAssembly Stream Compilations - Documents the API for streaming compilation and instantiation of WebAssembly modules.
• Content Security Policies - Documents configuration guides for restricting browser capabilities to prevent code injections.
• Cross-Origin Resource Sharing - Documents policies for restricting API access to trusted domains using CORS headers.
• Canvas Cross-Origin Configurations - Documents how to configure CORS for images to enable their use in canvas elements.
• Client-Side Request Authentication - Documents mechanisms for adding authentication credentials to outgoing network requests.
• Mathematical Notation Rendering - Renders mathematical formulas and expressions in web pages using structured XML-based markup.
• TypeScript Type Definitions - Provides automatically generated TypeScript type definitions that match the dataset's schema for type-safe access.
• TypeScript Type Synthesis - Generates TypeScript type definitions directly from the JSON schema to provide compile-time type safety for consumers.
• CSS Filter Effects - Uses SVG within CSS styles to add filters, shadows, blurs, and other visual effects to standard HTML elements.
• MathML Styling - Applies CSS styling to mathematical expressions for consistent visual presentation across browsers.
• Multi-Context Embedding - Provides SVG as an image source in HTML, CSS, SVG elements, and the Canvas API for flexible integration.
• Definition Lists - Marks up keywords and definitions inline or as structured glossaries to convey description semantics.
• MathML Embedding - Integrates mathematical markup directly into HTML documents alongside other web standards.
• Image Maps - Creates image maps that associate hyperlinks with different parts of an image.
• Cookie Storage Management - Provides a dedicated API for reading, creating, and deleting browser cookies.
• MIME Sniffing Prevention - Documents the X-Content-Type-Options header to prevent browsers from MIME-sniffing files.
• MIME Type Definitions - Identifies the nature and format of a document using a standardized type/subtype structure.
• Server MIME Type Configurations - Documents how to configure server MIME types to prevent browser misreading of files.
• Data Attribute Styling - Stores extra information on standard HTML elements using data-* attributes without predefined meaning.
• Initial Page Load Optimizations - Documents strategies for reducing time-to-interactive through server-side rendering and tree-shaking.

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