Chrome can capture a full page on its own, but the route is hidden in developer tools and gives you no preview, no format choice and no history. Here is the short version of both approaches, so you can decide which one you need.
Open the Chrome Web Store listing for Full page screenshot and add it to Chrome. Pin it to the toolbar from the puzzle-piece menu so the icon is always visible. No registration is involved.
Step 2 — open the page and click the icon
Go to the page you want to keep and click the extension icon. The menu offers two modes, Capture Full Page and Capture Selected Area, each with a PDF, PNG or JPG menu next to it. Pick the format, then the mode.
Step 3 — let the page be captured
The extension scrolls through the document, waits for images that load on the way and assembles the result. Long pages take a few seconds; you can watch the progress until the Done dialog appears.
Step 4 — check the file and save
In the Done dialog, rename the file if you like, preview, share or print it, then click Save. The finished file is downloaded and added to History, where you can preview, share, print or download it again later.
The built-in Chrome method
Chrome's own command lives in developer tools: open them, open the command menu and run the full-size screenshot capture. It works, but it only produces one image format, has no preview step, struggles with pages that load content while scrolling, and keeps no list of what you captured. The extension exists to remove those four limits.
FAQ
Do I need developer tools?+
No. With the extension installed, a full-page capture is two clicks from the toolbar.
Can I capture only the visible part?+
Yes — use the selected-area mode and drag a frame around what you need.
Where does the file go?+
To your normal downloads location, and to the extension's History list.
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Copy a screenshot to the clipboard instead of saving a file: PrtSc on Windows, Control + Cmd + Shift on a Mac, automatic on Chromebook, and Copy in browsers.
Take a Firefox screenshot with Ctrl + Shift + S or right-click > Take Screenshot: save the full page, the visible part or a region, then download or copy it.