# How Chrome halved scroll jank on Android

Google engineers improved Chrome's scrolling performance on Android.

- **Source:** [Android](https://brifing.si/source/0ee45b9b-ec42-4a27-8ef0-9af1529ca8e2)
- **Published:** 2026-07-24
- **Topic:** [Software & Engineering](https://brifing.si/c/engineering)
- **Original article:** <https://www.reddit.com/r/Android/comments/1v4xfj4/smoother_scrolling_how_we_halved_scroll_jank_in/>
- **On Brifing:** https://brifing.si/s/3f107bbf-a795-4bf9-b340-e16ebee36615

## What is scroll jank?

Scroll jank refers to the stuttering and uneven motion users experience when scrolling through web pages. This issue particularly affects user experience on mobile devices. Google engineers began working to solve this problem in Chrome's Android version.

## Root cause of the issue

The primary cause of scroll jank is the lack of synchronization between the CPU and GPU. This becomes especially noticeable on complex web pages. Google analyzed the issue and identified performance bottlenecks.

## Solution approach

Engineers optimized scrolling operations by making changes to Chrome's core engine. They focused on thread management and memory usage, reducing delays during scrolling.

## Testing process

The changes underwent extensive testing on various Android devices. Scrolling performance was measured across different hardware and software combinations, and improvements were validated.

## Results

Thanks to the optimizations, scroll jank in Chrome on Android was reduced by half. Users now experience smoother and more seamless scrolling. This improvement is particularly noticeable on low to mid-range devices.

## Impact on user experience

This enhancement in scrolling performance significantly improves the mobile web browsing experience. Users can navigate pages more comfortably, increasing satisfaction among Chrome's Android users.

## Sources covering this story

- https://www.reddit.com/r/Android/comments/1v4xfj4/smoother_scrolling_how_we_halved_scroll_jank_in/ — 

---

_Summary written by Brifing from the original reporting. Copyright in the original article belongs to its publisher; read the full piece at the link above._