How to choose a full-page screenshot extension

There are dozens of full-page screenshot extensions and most of the reviews are lists of feature names. Feature lists are not what separates them. Here is what actually does — a checklist you can run against any of them, including this one.

1. What permissions does it ask for?

This is the most important item on the list, and the one most people skip.

If Chrome warns that an extension can “read and change all your data on all websites”, it can read every page you visit — your bank, your email, your company’s internal tools — whether or not you ever ask it for a screenshot.

An extension built on the activeTab permission gets access to a page only at the moment you click its icon, and loses it afterwards. Both approaches can take a full-page screenshot. Only one of them can watch you browse.

The trade-off is real: activeTab means captures can only start from the toolbar icon, a keyboard shortcut or the right-click menu. Some conveniences are not possible. That is a reasonable price.

2. Where do your screenshots go?

Screenshots are unusually sensitive: customer names, invoices, dashboards, unreleased designs. Some extensions upload every capture to their servers by default, sometimes as the mechanism for showing you the result.

Look for a clear statement about whether images leave your device, and whether any upload is opt-in. “We take privacy seriously” is not a statement. “Screenshots are stored locally and are not uploaded” is.

3. How does it handle sticky headers?

Capture a site with a fixed navigation bar. If the header appears once at the top, the tool handles fixed elements. If it appears every few hundred pixels down the image, it does not — and you will hit that on most modern sites.

4. Does it wait for lazy-loaded images?

Test it on an image-heavy page — a photography portfolio, a long ecommerce category, a news homepage. Grey placeholder boxes in the result mean the tool captured faster than the page loaded.

Better tools offer a slower, more thorough mode that pre-scrolls the page first. It takes longer. It is worth it on the pages where it matters.

5. What happens on a very long page?

Browsers cannot create an image beyond roughly 32,767 pixels on a side, and a high-DPI display doubles every dimension before you start. So a genuinely long page has to be scaled down.

The question is what the tool does about it. Scaling and telling you is fine. Producing a blank or truncated image with no explanation is not — and it is common.

6. Can you annotate and redact without leaving?

Most screenshots need something: an arrow, a label, a blurred email address. If the extension has no editor, every capture becomes a two-app job.

Check specifically for a blur or pixelate tool. Sharing a screenshot with a customer’s details still legible is a genuinely costly mistake, and cropping is not always an option.

7. Can you find a screenshot again a week later?

Some tools save the image and forget it. Look for a searchable history with the page title and URL recorded, and filenames built from the site and date rather than Screenshot 2026-08-14 193829.png.

8. Is the pricing honest?

Two things to check before paying:

• Does the free plan do anything useful, or does it watermark every image and cap you at three captures?
• Do the paid features actually exist yet? Some pricing pages list roadmap items alongside shipped ones with no distinction. If a feature sold you on the upgrade, confirm it is real before paying.

The two-minute test

Whichever you are evaluating, capture these three pages:

1. A long news homepage — tests sticky headers and lazy images at once.
2. A documentation site with a fixed sidebar — tests fixed-element handling.
3. An infinite-scroll page — tests whether it knows when to stop.

You will learn more in two minutes than from any feature comparison table, including this one.