ScrollSync

About

ScrollSync gives you control over how far Chrome scrolls with every keypress: something Chrome has never offered natively.

How it works:
Choose Slow, Normal, or Fast in the popup. ScrollSync adjusts how far Arrow keys, Space, PageUp, and PageDown move the page. Normal is identical to Chrome's default with zero performance overhead. Slow makes reading easier. Fast lets you fly through long pages.

Why you need it:
Chrome has no built-in scroll speed control. If you read long articles, research papers, or documentation, you've probably wished arrow keys moved a little less, or a lot more. ScrollSync fixes this in one click.

Free Features:
- Three scroll speed presets: Slow, Normal, Fast
- Applies instantly to every page
- Normal mode has zero performance impact, where Chrome handles it natively
- Settings persist across sessions

Pro Features: $4.99 one-time
- Precise speed control: exact multiplier from 0.25x to 5x
- Per-site settings: different speed for different domains
- Save up to 5 named presets (e.g. "Reading", "Fast browse")
- Keyboard shortcuts to increase/decrease speed without opening popup
- Smooth scroll toggle per site
- Horizontal scroll speed control

Privacy:
No page content or browsing history is ever accessed or transmitted. Only your scroll speed preference is stored locally. No account required.