Snapline
A scrolling screenshot app for Mac
macOS stops at what fits on the screen. Snapline's Scrolling Capture takes the rest: select a window or a region, scroll it the way you normally would, and Snapline stitches one tall PNG while you watch.
Free to try in full for 14 days · macOS 14 or later · Last updated 20 October 2026
How it works
- Press ⌥⌘L (you can change it in Settings), select one scrolling window or a region, and click Start.
- Scroll through the content yourself, at your own pace: down a page, or up a chat from its newest message. A live preview grows next to the selection and keeps a running height.
- Click Done (or press ⌥⌘L again). The result is one tall PNG that works like any other Snapline capture: annotate it, redact it, pin it, or find it later by the text in it.
What it captures
Anything that scrolls up and down in one pane: a Slack or Messages thread, a long document, a PDF in Preview, a settings pane, code in your editor, a web page in any browser. Because Snapline reads the screen rather than asking the app for its content, it does not need the app to support anything.
You scroll, so nothing else needs permission
Snapline never scrolls other apps for you. It watches the selection through the Screen Recording permission, which it already needs for any screenshot, and joins the frames as they arrive. Nothing is injected into the app you are capturing, so there is no Accessibility permission to grant. You set the pace: pause while a chat loads older messages, then carry on.
Stitching you can watch
- Either direction. The capture grows whichever way your first strokes go. Two tabs on the ring around the selection say "Scroll up" and "Scroll down" until then; after that, scrolling the other way adds nothing, so start at one end.
- Sticky headers kept once. Snapline detects headers and docked footers that stay put while the content moves, and keeps them once instead of at every join. Floating buttons and sticky sidebars are handled the same way.
- Mistakes forgiven. Scrolling back, pausing and the elastic bounce at the end of a page do not break the stitch. If you jump too far and lose the overlap, the capture pauses and tells you to scroll back; it carries on from the next frame that fits.
- The rest of the display dims while the capture can still grow, so you can see what is being kept.
After the capture
A scrolling capture lands in History like every other screenshot. Open it in the editor to add arrows and text, redact a name before you share it, pin it over your work, or search for it later by its text, read on your Mac and never uploaded.
Where it stops
Scrolling Capture joins content that scrolls up and down, one pane at a time, up to 32,000 points tall (about 64,000 pixels on a Retina display), and the preview says when you reach it. It does not capture content that scrolls sideways, a selection that takes in two panes scrolling on their own confuses it, and resizing the window mid-capture ends it, so keep the window the same size. The result is always a PNG. The scrolling screenshot guide covers the fixes, and every other way to do it, including the free ones.
Questions
Can a Mac take a scrolling screenshot without an app?
Not of an app window. The built-in tool (⇧⌘5) captures only what is visible. For a web page, Safari, Chrome and Firefox can each save the full page for free; the guide shows how.
Does Snapline scroll the page for me?
No, by design. You scroll and Snapline stitches, so it never sends input to another app and needs no permission beyond Screen Recording.
Does it capture content that scrolls sideways?
No. Scrolling Capture joins vertical scrolling only. Of the apps in the guide, CleanShot X is the one that documents horizontal scrolling capture.
Is it free?
Every feature, Scrolling Capture included, is free to try in full for 14 days, with no card and no account. After that, capture unlocks with a one-time license: no subscription.