Download Snapper

Install the latest native version of Snapper for macOS.

Version: v1.0.0•Size: ~7 MB•Requires: macOS 14.0+

1. Gatekeeper Bypass

Because Snapper is currently ad-hoc signed, macOS Gatekeeper will block it by default. Follow one of the quick methods below to bypass this warning and launch it safely.

Method A

Right-Click Open (Easiest)

Double-click the downloaded Snapper.dmg.zip to expand it.
Open the Snapper.dmg volume and drag Snapper.app into your /Applications folder.
Open the /Applications directory in Finder.
Right-click Snapper.app and select Open.
Click Open in the warning dialogue box. You only need to do this once.

Method B

Terminal Command

If macOS refuses to open the app or shows a corruption warning, open Terminal and run the command below to strip the quarantine attribute:

xattr -cr /Applications/Snapper.app

Open Terminal on your Mac.
Paste the command above and press Enter.
Double-click Snapper in Applications to launch immediately.

2. Required System Permissions

To capture window boundaries and execute automatic scrolling, Snapper needs the following macOS system permissions.

Screen Content

Screen Recording

Why: Enables Snapper to detect active window dimensions and capture graphic contents under your cursor. Snapper processes all screenshots 100% locally in-memory.

System Settings > Privacy & Security > Screen Recording

Toggle the switch next to Snapper to grant permission, then restart the app.

Auto Scrolling

Accessibility

Why: Allows Snapper to send automated scroll events to browser containers during Scroll Capture to automatically capture and stitch multi-screen contents.

System Settings > Privacy & Security > Accessibility

If disabled, Scroll Capture will gracefully fall back to manual scrolling mode.