On Windows and macOS, Firefox lets you jump to tabs with Ctrl+1 … Ctrl+8, and Ctrl+9 jumps to the last tab. On Linux? Nope. That bugged me enough that I just fixed it myself.

So this extension does exactly one thing:

• Ctrl+1 … Ctrl+8 switch to tab 1-8
• Ctrl+9 switch to the last tab

No toolbar button, no settings page, no tracking. It just listens for those shortcuts and activates the right tab in the current window.

Download

Download switch-tab-ctrl-number-1.0.0.xpi (v1.0.0, Firefox 109+)

Install

Firefox doesn't let you install random .xpi files with one click from a personal site, so:

1. Download the file above.
2. Go to about:addons in Firefox.
3. Click the gear icon → Install Add-on From File…
4. Pick the downloaded .xpi and confirm.

Or drag-and-drop the .xpi file onto a Firefox window.

After that, just press Ctrl+1 … Ctrl+9 and enjoy Windows-style tab switching on Linux.

Source code

The whole thing is two files. That's it.

background.js:

const switchToTab = async (slot) => {
  const tabs = await browser.tabs.query({ currentWindow: true });
  if (tabs.length === 0) return;
  const ordered = tabs.slice().sort((a, b) => a.index - b.index);
  const target = slot === 9 ? ordered[ordered.length - 1] : ordered[slot - 1];
  if (target) await browser.tabs.update(target.id, { active: true });
};

browser.commands.onCommand.addListener((name) => {
  const match = /^switch-to-tab-([1-9])$/.exec(name);
  if (!match) return;
  switchToTab(parseInt(match[1], 10));
});

manifest.json:

{
  "manifest_version": 3,
  "name": "Switch Tab with Ctrl+Number",
  "version": "1.0.0",
  "description": "Switch tabs with Ctrl+1..8 (and Ctrl+9 for last tab) on Linux Firefox, matching the Windows/macOS behavior.",
  "browser_specific_settings": {
    "gecko": {
      "id": "switch-tab-ctrl-number@dmitryside",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "commands": {
    "switch-to-tab-1": {
      "suggested_key": {
        "default": "Ctrl+1"
      },
      "description": "Switch to tab 1"
    },
    "switch-to-tab-2": {
      "suggested_key": {
        "default": "Ctrl+2"
      },
      "description": "Switch to tab 2"
    },
    "switch-to-tab-3": {
      "suggested_key": {
        "default": "Ctrl+3"
      },
      "description": "Switch to tab 3"
    },
    "switch-to-tab-4": {
      "suggested_key": {
        "default": "Ctrl+4"
      },
      "description": "Switch to tab 4"
    },
    "switch-to-tab-5": {
      "suggested_key": {
        "default": "Ctrl+5"
      },
      "description": "Switch to tab 5"
    },
    "switch-to-tab-6": {
      "suggested_key": {
        "default": "Ctrl+6"
      },
      "description": "Switch to tab 6"
    },
    "switch-to-tab-7": {
      "suggested_key": {
        "default": "Ctrl+7"
      },
      "description": "Switch to tab 7"
    },
    "switch-to-tab-8": {
      "suggested_key": {
        "default": "Ctrl+8"
      },
      "description": "Switch to tab 8"
    },
    "switch-to-tab-9": {
      "suggested_key": {
        "default": "Ctrl+9"
      },
      "description": "Switch to last tab"
    }
  }
}

No bundlers, no minified blob, no network requests. It queries the tabs in the current window, picks the one at the requested index (or the last one for Ctrl+9), and activates it.

Check it yourself

An .xpi is just a .zip. You don't have to trust the code block above. Inspect the exact file you're installing:

# 1. Download it, then list what's inside
unzip -l switch-tab-ctrl-number-1.0.0.xpi

# 2. Unpack it somewhere
mkdir ext-src && unzip switch-tab-ctrl-number-1.0.0.xpi -d ext-src
ls -R ext-src

# 3. Read the actual code
cat ext-src/manifest.json
cat ext-src/background.js

You'll see background.js, manifest.json, plus a META-INF/ folder. That folder (cose.sig, mozilla.rsa, etc.) is Mozilla's signature — it's what lets Firefox install the file without complaining about it being unsigned. You can ignore it for review purposes; the executable part is only the two files above.

Optional, verify the download wasn't corrupted/tampered with in transit:

sha256sum switch-tab-ctrl-number-1.0.0.xpi
# expected: 239813cbb50b615608527fd364bab75ea6c1e853b6266cc58e6ab5b579e4e90c

If the hash matches and the two source files match what's posted here, you're running exactly what I wrote.

So originally I was going to write a review for a book and I even got a couple of paragraphs done, but now reading the draft I realize it's completely irrelevant and lacks consistency. In other words, I'm not going to post it anytime soon, at least until I rewrite the whole draft to my liking.

As for the older posts, I'm sure I'll get rid of them eventually. They feel like placeholders, and for some reason, I now find them embarrassing. But I don't want the blog page to be completely empty, so I guess I'll leave it as it is until I write one or two more posts.

So yeah. Every post I've written is cringe and will be removed (except for the sheep).

Stay tuned

I have no idea why I'm sharing this. Yes, I know it's disgusting.

You heard me right. I freakin' love Comic Sans.

In the world of typography, Comic Sans gets a bad rap. It's always made fun of by design snobs and relegated to children's birthday party flyers or poor promos. But I'm here to argue that this playful font is deeply underrated. Sure, Comic Sans might not be the most sophisticated choice for a legal document or a scientific paper. But for what it's designed to do – add a touch of whimsy and informality – Comic Sans excels.

Think about it. This font is perfect for capturing a sense of fun and friendliness. It's inviting and approachable, a quality that many fonts lack. Here's the thing: not everything needs to be taken so seriously. Sometimes, you just want a font that slaps. Comic Sans does that perfectly.

So get your dirty hands off my beloved font!

UPD

I like this font so much I even started using it on this site. Well, not Comic Sans exactly — I switched everything over to Comic Mono instead. Same energy, just monospace.

NOTE: It was made long time ago

My productivity

Near zero. Lately, I've fallen into a procrastination trap. I wait for the mythical "perfect moment" to focus on work, but it never arrives. Even though I have uninterrupted time throughout the day, the excuse of needing complete silence keeps circling in my head. (Right now, I'm writing this instead of working on my Django project for uni – classic procrastination!)

The struggle is real – tasks can feel uninspiring, and on the flip side, I haven't discovered any hobbies that truly excite me. During free time after exams, I fill the void with activities like endless Twitter scrolling or mindless gaming, but this "rest" feels hollow. It's a vicious cycle: I wake up with the intention to be productive, but the "later" monster whispers in my ear, and procrastination wins again.

I really want to break free from this cycle and find a way to use my free time productively and discover activities that bring me genuine joy.

Quick note: The numbers in the list do not indicate significance or quality.

Movies

1. Whiplash
2. Any film with Ryan Gosling 🥰
3. Inside Llewyn Davis
4. Any film by Denis Villeneuve

Books

1. Martin Eden by Jack London
2. The Witcher series by Andrzej Sapkowski
3. The Dark Tower series by Stephen King

Games

1. Disco Elysium
2. Cyberpunk 2077
3. Risk of Rain 2
4. Dead by Daylight
5. The Witcher 3: Wild Hunt