webextension-polyfill updates

[rebloor]

Description

These changes are designed to emphasize that the webextension-polyfill is now only needed when an extension want to target Chrome 147 or earlier.

Related issues and pull requests

Related changes to the Extension Workshop content in mozilla/extension-workshop#2401.

[github-actions]

Preview URLs (4 pages)

• /en-US/docs/Mozilla/Add-ons/WebExtensions/API/tabs/executeScript
• /en-US/docs/Mozilla/Add-ons/WebExtensions/API
• /en-US/docs/Mozilla/Add-ons/WebExtensions/Build_a_cross_browser_extension
• /en-US/docs/Mozilla/Add-ons/WebExtensions/Chrome_incompatibilities

External URLs (7)

URL: /en-US/docs/Mozilla/Add-ons/WebExtensions/API
Title: JavaScript APIs

• https://crbug.com/500769389 (1 time) (Note! This may be a new URL 👀)
• https://github.com/mozilla/webextension-polyfill (1 time) (Note! This may be a new URL 👀)

---

URL: /en-US/docs/Mozilla/Add-ons/WebExtensions/API/tabs/executeScript
Title: tabs.executeScript()

• https://github.com/mozilla/webextension-polyfill (1 time) (Note! This may be a new URL 👀)

---

URL: /en-US/docs/Mozilla/Add-ons/WebExtensions/Build_a_cross_browser_extension
Title: Build a cross-browser extension

• https://crbug.com/500769389 (1 time) (Note! This may be a new URL 👀)
• https://github.com/mozilla/webextension-polyfill/ (2 times) (Note! This may be a new URL 👀)

---

URL: /en-US/docs/Mozilla/Add-ons/WebExtensions/Chrome_incompatibilities
Title: Chrome incompatibilities

• https://crbug.com/500769389 (1 time) (Note! This may be a new URL 👀)
• https://github.com/mozilla/webextension-polyfill (1 time) (Note! This may be a new URL 👀)

(comment last updated: 2026-07-29 16:42:48)

[Rob--W]

Could you update the text to account for mozilla/webextension-polyfill#942 ? There is a small subset of extensions where "148" does not apply, but "152" does.

[rebloor]

@Rob--W updated re 152