Greasy Fork

Hi everyone,

I’ve been experimenting with using userscripts (via Greasemonkey / Tampermonkey) to enhance HTML5 browser games — mostly to tweak UI, reduce lag, or disable unnecessary effects. Thought I’d share some ideas and see what you all think.

Here are some techniques I’ve tried:

Disable or skip heavy animations / transitions (fade, blur, shadows) via CSS overrides or JS hooks

Remove or reduce HUD elements or overlays that aren’t needed (e.g. hide ads, extra effects)

Preload critical assets (images / sounds) before gameplay starts, and defer non-essential ones

Patch the game’s rendering loop to skip frames if performance drops (simple throttle logic)

Use lightweight caching / memoization for repeated computations

Intercept & block unnecessary network requests (analytics, telemetry) during gameplay

So far some scripts gave noticeable gains, especially on older machines. But it’s tricky — too aggressive modifications can break game logic or UI.

I’d love to hear from you:

Have you written or used user scripts to optimize games?

What kinds of tweaks gave the biggest performance improvements for you?

Any pitfalls you encountered (compatibility, game updates breaking scripts)?

Looking forward to your stories & scripts!

Use the performance profiler in devtools to identify the bottlenecks that can be optimized.