Context menu items are context-aware and only appear when relevant

Context menu items registered with contexts: ['all'] appear on every right-click — blank page areas, the New Tab page, chrome:// settings, PDFs — cluttering the menu with options that cannot function in those contexts. Users right-clicking to copy text wade past irrelevant extension entries, and Chrome Web Store reviewers flag menu-spamming extensions as a policy concern under the single-purpose and minimal-permission guidelines. On pages where the extension has no host permission, clicking the item produces a silent no-op and looks broken.

Scope every chrome.contextMenus.create call to the narrowest context that makes sense: ['selection'] for text actions, ['image'] for image actions, ['link'] for link actions. Add documentUrlPatterns to exclude pages where the extension cannot operate. In background.js:

chrome.contextMenus.create({
  id: 'search-selection',
  title: 'Search "%s"',
  contexts: ['selection'],
  documentUrlPatterns: ['https://*/*', 'http://*/*'],
});