AOS, built by the AOS-extension community and contributors, is a Chrome extension that provides a visual debugging workspace for the Animate On Scroll library. It gives real-time feedback on animation trigger points and exposes element-level AOS attribute inspection. The tool also highlights viewported elements and offers toggles for testing animation behavior, making it useful for front-end developers and UI/UX designers polishing scroll-driven interactions.

AOS surfaces element-level AOS metadata so developers can inspect timing and triggers

Element inspection focuses on AOS-specific attributes such as data-aos, data-aos-delay, and data-aos-duration. The extension shows how those attributes map to on-screen behavior while you scroll, which replaces repetitive console checks with a visual view of which elements are scheduled to animate and when. This view is targeted specifically at pages that use the Animate On Scroll library.

Integration with the developer workflow reduces guesswork during testing

The extension plugs into the browser UI via the toolbar icon or a dedicated DevTools panel, placing inspection tools where debugging happens. It includes controls to enable or disable animations for performance comparisons and marks elements currently in the viewport for quick verification. The developer notes the extension maintains a lightweight footprint and does not interfere with site performance during standard browsing, so it can stay active during iterative tweaks.

Designed for front-end teams refining scroll-driven interfaces, not for animation authoring

Target users include front-end engineers and UI/UX designers who need faster visual feedback while polishing interactions. The extension shortens the debugging loop by removing repetitive console logging and giving immediate visual cues about visibility logic. It is available for Chrome and other Chromium-based browsers on desktop platforms, fitting into multi-platform front-end workflows without additional tooling.

AOS is a focused QA tool for developers who finalize scroll animations

The extension is a practical companion for developers who need visual confirmation of scroll-triggered behavior during final testing. It only inspects existing AOS implementations, so use it on staging or local builds rather than on production traffic, and compare results with a clean browser profile to spot extension-induced differences. As a targeted debugging aid, it accelerates the polish phase for animation-heavy pages.