The EyeDropper API lets web apps offer a browser-provided eyedropper mode so users can pick a color from any pixel on their screen—even outside the browser—using clear, user-driven controls.
Encrypted Media Extensions (EME) is the web platform’s standard way to enable playback of encrypted, DRM-protected media in the browser. Rather than handling decryption directly, your application coordinates with the browser’s Content Decryption Module (CDM): it requests access to a media key system via Navigator.requestMediaKeySystemAccess(), attaches the resulting MediaKeys to a specific HTMLMediaElement with setMediaKeys(), and then manages the message exchange for licenses/keys through a MediaKeySession. When the media element encounters encrypted initialization data, it fires an encrypted event (represented by MediaEncryptedEvent), and the CDM can emit session messages (MediaKeyMessageEvent) that your app relays to whatever key infrastructure you use. EME is widely available across modern browsers and is typically restricted to secure contexts (HTTPS).
Modern web apps live at the boundary between JavaScript strings and raw bytes. The Web Encoding API exists to make that boundary explicit and safe: it lets you encode a string into UTF‑8 bytes and decode bytes back into text. Importantly, these operations aren’t symmetrical—encoding targets UTF‑8, while decoding can interpret UTF‑8 and many legacy encodings. Alongside the synchronous TextEncoder and TextDecoder, the platform also provides stream-based variants for processing text incrementally as data arrives.
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