Do these 3 things before closing this tab:
1Scan for outdated or missing drivers - takes under a minute2Repair Windows errors before they cause bigger problems3Fix the driver behind crashes, sound loss and screen glitchesCall context.targets() on the Puppeteer BrowserContext you want to inspect. It synchronously returns a Target[] for the active targets in that context.
List targets in one BrowserContext
Keep a reference to the context you want to inspect, then call targets() on it:
const targets = context.targets();
console.log(targets);The return value is an array of Target objects, and the call is synchronous; do not put await before it.
Runnable example
import puppeteer from 'puppeteer';
const browser = await puppeteer.launch();
const context = await browser.createBrowserContext();
const targets = context.targets();
console.log(`Active targets in this context: ${targets.length}`);
await browser.close();A browser context isolates its storage from other contexts. A popup opened by a page belongs to the same context as the page that opened it. Close the browser when finished to close its associated pages. See Puppeteer’s BrowserContext API.
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Choose between targets, pages, and browser-wide targets
Use the API whose scope and return type match the task:
| API | Scope and result | Use it when |
|---|---|---|
context.targets() |
Active targets in one context; synchronous Target[]. |
You need all active targets scoped to a particular context. See BrowserContext.targets(). |
context.pages() |
Pages in one context; asynchronous Promise<Page[]>. By default, non-visible pages such as background pages are omitted. |
You need page objects rather than every target. The docs describe an experimental includeAll option. See BrowserContext.pages(). |
browser.targets() |
Targets across all browser contexts. | You intentionally need browser-wide coverage, not just one context. See Browser.targets(). |
browser.browserContexts() |
The open BrowserContext objects. |
You need to enumerate contexts before inspecting an individual one. A newly launched browser has one context. See Browser.browserContexts(). |
Common mistakes and fixes
- Using
browser.targets()for a context-only result: it includes targets from all contexts. Calltargets()on the specific context instead. - Expecting
pages()to include every target: it returns pages, not all target types, and omits non-visible pages by default. Usecontext.targets()when you need active targets, or consult the documented experimentalincludeAlloption if the need is specifically all pages. - Awaiting
context.targets(): it is synchronous and already returns its array. By contrast,context.pages()returns a promise and should be awaited. - Inspecting a context after closing it or its browser: retain and inspect the live context while its browser is open. The example closes the browser only after reading the targets.
Or skip the browser setup
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