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To interact with an iframe in Puppeteer, first identify its Frame, then use that frame’s own locator, selector, or evaluation method. Page-level selectors target the main frame; they do not search every iframe document. If the frame loads asynchronously, wait for it with page.waitForFrame(), and if an action navigates it, attach the navigation wait before triggering the action.
How Puppeteer represents frames
Puppeteer’s Frame represents a DOM frame, such as an <iframe>. A page has a main frame and may have child frames, including nested frames. Code evaluated in one frame runs in that frame’s document context; it does not automatically cross into a child frame. See the Frame class reference.
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Use page.mainFrame() for the main document, page.frames() to list attached frames, and frame.childFrames() to inspect a frame’s immediate children. Because frames can attach, navigate, or detach while the page loads or rerenders, select by a stable property rather than assuming a particular array position.
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Inspect the current frame tree
Start by logging frame URLs and nesting. The recursive pattern below follows the hierarchy rather than assuming the iframe is a direct child of the main frame:
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function dumpFrameTree(frame, indent = '') {
console.log(indent + frame.url());
for (const child of frame.childFrames()) {
dumpFrameTree(child, indent + ' ');
}
}
dumpFrameTree(page.mainFrame());page.frames() is useful when you want a flat list of all currently attached frames. The tree view is more helpful when an unexpected nested iframe is the reason a query is missing its target.
Wait for an iframe that appears later
When the target frame is created asynchronously, use page.waitForFrame() with a URL or predicate. Its predicate can inspect the embedding element through frame.frameElement(). This example matches the iframe’s name attribute:
const frame = await page.waitForFrame(async frame => {
const element = await frame.frameElement();
if (!element) return false;
return await element.evaluate(el => el.getAttribute('name') === 'checkout');
});This is an API-shape illustration based on Puppeteer’s Page.waitForFrame() reference, not a tested script. Adapt it to your installed Puppeteer version and page. If the name is mutable or duplicated, combine it with a stable URL or another embedding-element attribute so the predicate identifies the intended frame.
Query and interact inside a frame
Once you have the target Frame, use its own APIs. A frame-scoped locator keeps an action within that frame:
await frame.locator('button[type="submit"]').click();Frame.locator() supports CSS selectors and Puppeteer-specific selector syntax, including text, accessibility role and name, XPath, and combined queries across shadow roots. Locators describe how to find an element and retry actions while documented preconditions are met. See the Frame.locator() reference and Locator reference.
For lower-level operations, frame.$() returns the first matching element handle or null, frame.$eval() runs a function with the first matching element, and frame.evaluate() runs code in that frame’s context. Use locators for user-like actions and explicit frame methods when you need page data or element handles.
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If the desired element is in a nested iframe, first identify that child frame and then query within it. A selector run in the main frame does not search child documents.
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Wait for frame content or navigation
Wait for an element
Use frame.waitForSelector() when the condition you need is that an element appears in the frame. The method works across navigations and throws if the selector does not appear within the configured wait options. See Frame.waitForSelector().
Wait for navigation caused by an action
If clicking or otherwise interacting is expected to navigate the frame, create the wait before the action and await both together:
const [response] = await Promise.all([
frame.waitForNavigation(),
frame.click('a.continue'),
]);This avoids a race in which navigation starts before the wait is attached. Puppeteer counts History API URL changes as navigation; the returned main-resource response may be null for navigation to about:blank or a same-URL hash change. See Frame.waitForNavigation().
Choose the wait that matches the outcome: navigation for a changed document or URL, selector wait for a target element, and a meaningful application-specific condition when neither alone signals readiness. Avoid using arbitrary sleeps as a substitute for a condition.
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Frames can detach and be replaced during application updates. A retained frame reference can therefore become stale. Check the frame’s detached getter when diagnosing this case, then inspect the current frame tree or wait for the target again. The frame lifecycle and related APIs are documented in the Frame reference.
Troubleshooting common iframe problems
- The selector is missing from the page. It may be inside an iframe. Identify the correct
Frameand run the query there instead of using a page-level selector. - The target frame is not in the list yet. It may attach after initial navigation. Wait with
page.waitForFrame()rather than relying on a snapshot taken too early. - The correct-looking frame still has no matching element. Inspect the frame tree for nesting, then query the relevant child frame. Evaluation does not cross frame boundaries.
- A click appears to finish before the next page is ready. If it triggers navigation, install
frame.waitForNavigation()before clicking withPromise.all(). If you only need an element to appear, wait for that selector instead. - A previously found frame no longer works. The iframe may have detached and been recreated. Reacquire it from the current frame tree or wait for it again.
- The example method is unavailable. The cited API pages carry different version labels: Frame and Page are 25.12.0,
waitForFrameandFrame.locatorare 25.9.0, andwaitForSelectoris 25.10.0. These are documentation labels, not a promise that every method exists in older installs; check the reference for your project’s installed Puppeteer version.
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Example cURL request (replace the URL with the page you want to capture):
curl -G "https://api.screenshotneo.com/v1/shot" -d access_key=YOUR_API_KEY --data-urlencode url=https://stripe.com -o shot.webpSee the ScreenshotNeo API documentation for request options. Sign up for 1,000 free screenshots a month, with no card required.
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