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Hi everyone,

I’m using Firefox for Android on a fairly recent device and wanted to ask about performance when running web-based applications that are a bit heavier than normal websites.

Specifically, when using browser-based emulation tools or interactive web apps, I notice higher memory usage, occasional tab reloads, and sometimes audio or input lag after a few minutes. This doesn’t always happen on simpler sites, so it feels related to how Firefox handles long-running JavaScript and WebAssembly workloads on Android.

I wanted to ask:

Are there any recommended Firefox settings or flags to improve performance for heavier web apps?

Is Firefox for Android known to aggressively suspend tabs under memory pressure?

Would using private tabs, disabling certain features, or changing about: config settings help in this case?

I’m mainly trying to understand whether this is expected behavior or if there are optimizations I can apply.

Thanks in advance for any guidance.

In Firefox Mobile app... When I click Print option (for print pdf) It opens default printing app and it opens default letter format with header footer automatically added to the page

There is no option to remove header footer (this only appears in Firefox print...)

2nd problem is when I switch to landscape print it just shrink the letter size to the left and right half page is blank... Not responsive.. not automatically fits to the paper size... You can check the attachment for visuals of the problem.. Please fix this adjustment and header footer link problem or provide built it browser printer for custom printing options before launching the printing app.

Hi!

Suddenly the entire UI of the browser has changed. I have a big bar at the bottom of the screen taking far too much space with buttons I hardly ever need. And when I do need them I know where to find them. Thus they need not be as available as that (read: constantly in the way). It's not enough that it goes away when I scroll down as it pops up as soon as I scroll up again, along with the address bar.

How do I remove this bottom bar? The older UI was far better and didn't take this much space.

Thanks!

I regularly visit a site whose URL begins with "ni". When I type "ni", the full URL appears an an autofill suggestion. This is the desired behaviour.

Unfortunately, after visiting the site "nitecruzr.blogspot.com", this site is autofilled when I type "ni".

Firefox's documentation sais that if I delete the page from my history, it won't autofill again. Unfortunately, after deleting the page, this site still autofills when I type "ni".

How can I actually remove this site from address-bar autofill?

Trying to sync tabs with my desktop machine. Following the screen instructions, I am signed into my Firefox account on both the phone and desktop, a QR code is displayed on the desktop machine, but there is no "Ready to Scan" button on the phone. What now?

[edited email from public support forum} paid $65.00 for Mozilla VPN. I didn't get it. Mozilla is not sending me 6 didget code for my account. Mozilla help. My phone number is [edited phone#]

How do I sync bookmarks? The Firefox "Help" says: - "Tap the menu button Tap Sync and save your data."

I can tap the menu button (Three dots at top right of the screen). A menu appears, but there is no "Sync and save your data".

I like the old design better. The new Firefox adjusted for Android thingy is annoying. I want to go back to the Firefox version I used yesterday and everyday before.

Ever since I switched my search engine to duck duck go I've noticed that from time to time the firefox app deems to freeze up and either it continues or just crashes.

Firefox link messages in Viver have a Summarize Link which opens a brief AI translated english text Attached screenshots It does not appear to be a Viber issue This we find interfering and want to stop /disable / remove it How can this be done? Thank you