Manifest V3

E565061

WebExtensions platform specification browser extension manifest specification

Manifest V3 is the latest version of Chrome’s browser extension platform specification, introducing a new permissions, security, and background execution model for WebExtensions.

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All labels observed (2)

Label	Occurrences
Manifest V3 canonical	4
declarativeNetRequest API	1

How this entity was disambiguated

This entity first appeared as the object of triple T6034335 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Manifest V3
Context triple: [WebExtensions API, relatedTo, Manifest V3]

A. WebExtensions API
The WebExtensions API is a cross-browser extension framework that lets developers create add-ons using standardized web technologies like JavaScript, HTML, and CSS.
B. Ungoogled Chromium
Ungoogled Chromium is a privacy-focused, de-Googled variant of the Chromium web browser that removes Google integration and tracking features while remaining compatible with Chromium extensions.
C. Vivaldi web browser
Vivaldi web browser is a highly customizable, privacy-focused web browser built on Chromium, known for its advanced user interface controls and productivity features.
D. Chrome Web Platform features
Chrome Web Platform features are the set of modern web capabilities and APIs integrated into the Chrome browser to enable powerful, performant, and secure web applications.
E. Honey browser extension
Honey browser extension is a popular online shopping tool that automatically finds and applies coupon codes and discounts at checkout to help users save money.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Manifest V3
Target entity description: Manifest V3 is the latest version of Chrome’s browser extension platform specification, introducing a new permissions, security, and background execution model for WebExtensions.

A. WebExtensions API
The WebExtensions API is a cross-browser extension framework that lets developers create add-ons using standardized web technologies like JavaScript, HTML, and CSS.
B. Ungoogled Chromium
Ungoogled Chromium is a privacy-focused, de-Googled variant of the Chromium web browser that removes Google integration and tracking features while remaining compatible with Chromium extensions.
C. Vivaldi web browser
Vivaldi web browser is a highly customizable, privacy-focused web browser built on Chromium, known for its advanced user interface controls and productivity features.
D. Chrome Web Platform features
Chrome Web Platform features are the set of modern web capabilities and APIs integrated into the Chrome browser to enable powerful, performant, and secure web applications.
E. Honey browser extension
Honey browser extension is a popular online shopping tool that automatically finds and applies coupon codes and discounts at checkout to help users save money.
F. None of above. chosen

Statements (48)

Predicate	Object
instanceOf	WebExtensions platform specification ⓘ browser extension manifest specification ⓘ
aimsTo	improve extension security ⓘ improve performance of extensions ⓘ improve user privacy ⓘ
announcedBy	Google ⓘ
announcedIn	2018 ⓘ
compatibleWith	WebExtensions API model ⓘ linked to: WebExtensions API
criticizedFor	impact on content-blocking extensions ⓘ limitations of declarativeNetRequest rules ⓘ
defines	background execution model for extensions ⓘ extension manifest format ⓘ permissions model for extensions ⓘ service worker based background scripts ⓘ
deprecates	browserAction API from Manifest V2 ⓘ pageAction API from Manifest V2 ⓘ
documentedAt	https://developer.chrome.com/docs/extensions/mv3/overview/ ⓘ
encourages	event-driven extension design ⓘ
follows	Manifest V2 ⓘ
hasKeyField	"action" ⓘ "background" with service_worker ⓘ "host_permissions" ⓘ "manifest_version": 3 ⓘ
introduces	declarativeNetRequest API ⓘ linked to: Manifest V3
limits	long-running background execution ⓘ
maintainedBy	Google Chrome team ⓘ
partOf	Chrome Extensions platform ⓘ linked to: Chrome extensions
replacesFeature	event pages from Manifest V2 ⓘ persistent background pages ⓘ
requires	host permissions to be declared more explicitly ⓘ
restricts	blocking webRequest API for most extensions ⓘ
rolloutStartedIn	around 2021 ⓘ
specifies	new rules for content scripts ⓘ new rules for extension update behavior ⓘ
standardizedIn	Chromium project ⓘ linked to: The Chromium Project
supports	action API for unified toolbar button ⓘ fine-grained permission requests ⓘ offscreen documents API (in Chrome) ⓘ optional permissions ⓘ
usedBy	Brave browser ⓘ linked to: Brave web browser Chromium-based browsers ⓘ Google Chrome ⓘ Microsoft Edge ⓘ Opera ⓘ
usedFor	declaring extension background behavior ⓘ declaring extension permissions ⓘ defining Chrome extension capabilities ⓘ
uses	service workers for background logic ⓘ

How these facts were elicited

Referenced by (5)

Full triples — surface form annotated when it differs from this entity's canonical label.

WebExtensions API → relatedTo → Manifest V3 ⓘ

Chrome extension → versionModel → Manifest V3 ⓘ

subject linked to: Chrome extensions

Manifest V2 → precedes → Manifest V3 ⓘ

Manifest V2 → replacedBy → Manifest V3 ⓘ

Manifest V3 → introduces → declarativeNetRequest API ⓘ

linked to: Manifest V3

All labels observed (2)

How this entity was disambiguated Show

Statements (48)

How these facts were elicited Show

Referenced by (5)

How this entity was disambiguated

How these facts were elicited