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Firefox using high memory when running multiple web tools

  • 1 wótegrono
  • 0 ma toś ten problem
  • 5 naglědow
  • Slědne wótegrono wót Robert Lewis

Steven Parker
Steven Parker
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Hi everyone,

I’ve noticed that Firefox tends to use a lot of memory when I run several browser-based tools at once — especially web calculators or dashboards that update data dynamically.

For example, when I’m testing a lightweight web calculation app (something similar to a gratuity calculator that updates values in real time), Firefox memory usage slowly increases, and sometimes the browser even freezes if multiple tabs are open.

I’ve already tried:

Clearing cache and disabling extensions

Running in Safe Mode

Using hardware acceleration on/off


Still, the problem persists.

So I’d like to ask:

1. Are there any specific settings or flags that can help manage memory usage better for interactive web tools?


2. Does Firefox handle JavaScript-heavy calculations differently compared to Chromium-based browsers?


3. Any recommended performance tweaks for developers testing such tools locally?


Would really appreciate advice from anyone who’s optimized Firefox for this kind of lightweight, web-app testing.

Thanks in advance! 🙏 bold text

Hi everyone, I’ve noticed that Firefox tends to use a lot of memory when I run several browser-based tools at once — especially web calculators or dashboards that update data dynamically. For example, when I’m testing a lightweight web calculation app (something similar to a gratuity calculator that updates values in real time), Firefox memory usage slowly increases, and sometimes the browser even freezes if multiple tabs are open. I’ve already tried: Clearing cache and disabling extensions Running in Safe Mode Using hardware acceleration on/off Still, the problem persists. So I’d like to ask: 1. Are there any specific settings or flags that can help manage memory usage better for interactive web tools? 2. Does Firefox handle JavaScript-heavy calculations differently compared to Chromium-based browsers? 3. Any recommended performance tweaks for developers testing such tools locally? Would really appreciate advice from anyone who’s optimized Firefox for this kind of lightweight, web-app testing. Thanks in advance! 🙏 '''bold text'''

Wšykne wótegrona (1)

TyDraniu
TyDraniu
  • Top 25 Contributor
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Hi, can you record this behavior using the performance profiler? Thanks.

Once you've done that, please create a new bug on https://bugzilla.mozilla.org and share your profile URL there.

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