Website screenshots for design, records and review
Short answer
A website screenshot is an image of a site as it renders in a real browser, at real display density. Capturing it locally rather than through a rendering service means logged-in pages, personalised content and internal tools are all included, and nothing about the page leaves your computer.
Updated 13 August 2026Written by the Full Page Screenshot team
There are two ways to screenshot a website, and the difference matters more than it looks. A rendering service loads the URL on its own machine and sends you a picture. A browser capture photographs the page in front of you.
The service approach cannot see anything behind a login, cannot reproduce your session, your locale, your A/B bucket, your extensions or your viewport, and requires that you hand it the URL. For a public marketing page that is fine. For a dashboard, an internal tool, a checkout flow or a personalised feed, it is useless.
Local capture versus a rendering service
| Local browser capture | Rendering service | |
|---|---|---|
| Pages behind a login | Yes | No |
| Your exact session and locale | Yes | No |
| Internal or localhost URLs | Yes | No |
| URL sent to a third party | Never | Always |
| Batch capture of many URLs | One at a time | Its main strength |
| Runs without you present | No | Yes |
What makes a website screenshot usable later
- Real pixel density
- Capturing at the display's actual density means a 2× screen produces a 2× image. Text stays crisp when the image is zoomed, which is the difference between a reference and a blurry souvenir.
- The whole page, in order
- A stack of separate viewport screenshots loses the relationship between sections. One continuous image keeps the layout intact, which is what makes it useful in a design review.
- A filename you can find again
- A folder of
Screenshot 2026-08-13 at 14.22.51.pngis unsearchable. Naming captures from the page title and domain means you can find one six months later. - Private details removed before sharing
- Real pages contain real names, addresses and account numbers. Blurring them at capture time, before the file goes anywhere, is the only reliable moment to do it. See the editor.
Common uses
Design teams archive competitor and reference pages (designers). Developers attach visual state to bug reports (developers). SEO teams keep dated snapshots of pages before and after changes (SEO). QA attaches evidence to test runs (QA).
Frequently asked questions
How do I screenshot a website that requires a login?
Capture it in your own browser while signed in. Any tool that renders the URL on a remote server cannot reach a page behind your session.
Can I capture a localhost or internal site?
Yes, if your browser can open it. Local capture works on localhost, staging hosts and anything on your network. Local files need "Allow access to file URLs" enabled on the extension page.
What is the best format for a design reference?
PNG. It is lossless, so text and thin borders stay exact. JPG is better when the file has to be small and the content is photographic.
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Local processing and no network access
Screenshots are processed on your device. The extension requests no host permissions and makes no network requests — enforced by the browser, not promised.
Desktop screenshot tools versus browser capture
Desktop capture tools photograph the screen; browser capture photographs the document. Why that difference decides which one you need.