Apropos Tech Solutions Corp. Blog

Tag: Firefox

  • Web: browsers: how to find memory usage by tab in Firefox

    Especially on a light-resource system, one might want to discover which tab(s) are using a lot of juice.

    The following is how I see it.

    Right now I’m using what I’d call a Linux crunch box. It’s a computer from around 2017 that can’t run Windows 10 or 11 but can run Linux – specifically, Lubuntu.

    With my Windows PC, I commonly have 50 tabs open, sometimes on three different browsers(!), so 150 tabs total. [I am trying to cut down, though.] However, this low-resource crunchbox, whose distro included Firefox (as Linux commonly does, it seems), can’t run more than ten tabs without getting boggy. It depends on the tabs (the sites on the tabs), of course, but when I get to around ten tabs, I follow the “open one then close one” rule.

    That said, there are some sites that simply use a lot of computing power, likely because of ads. If I go to one of those sites, this PC’s fan ramps up. I either have to wait until I’m on the Windows PC to visit them, or else close more tabs in Firefox – maybe down to three or four – before visiting one of those high-resource sites.

    Some browsers, when you mouse over a tab, it shows that tab’s memory usage. What about Firefox?

    To find per-tab memory usage on Firebox, one goes into the application menu (top right, the three horizontal lines), then into More Tools, then Task Manager. You’ll see:)

    Source:

    support.mozilla.org

    -JS

  • Web: is my site on a LiteSpeed server? (Finding out from Firefox)

    Being on a LiteSpeed server, you can possibly use the LiteSpeed Cache.

    The following is by my understanding.

    Once a site gets busy, for instance a WordPress site, a cache can make the difference between the site being slow versus normal.

    On my oldest WordPress site, which went up in 2012, I have always used LiteSpeed Cache, except for a couple of interruptions during updates. When I had to run the site without it, I really noticed how much slower it loaded. On that site, LiteSpeed Cache is the only plugin I use. (See my post from June 5, 2026 for some background thoughts about plugins.)

    So, LiteSpeed Cache is a plugin that I like. However, as I understand, in order to use the LiteSpeed cache, one needs to be hosted on a LiteSpeed server. (Perhaps that’s a slight oversimplification, but likely good enough for a starter’s perspective.) How does one discover if they are?

    Here’s how I did so on Firefox:

    1. On a page from the site, right-click on a non-active part. From the drop-down, click Inspect.
    2. On the new pane that appears, find Network and click on it.
    3. Reload the page. A bunch of resources will be listed as they load.
    4. Click on any of the resources. A new pane will appear; on it, find Headers and click it.
    5. Underneath the Headers title, find Response Headers and scroll down. An entry like server: LiteSpeed indicates that, indeed, the site is on a LiteSpeed server.

    There are many potential directions to follow from this post. One motivation for finding if one’s on the LiteSpeed server is to discover whether using the LiteSpeed Cache is a possibility, perhaps even as a plugin if the site is WordPress.

    For follow-up I intend to mention corresponding directions relevant to Chrome and related browsers.

    Source:

    docs.litespeedtech.com

    w3.org

    -JS