Browser extensions can be amazing or terrible. The good ones genuinely make you more productive. The bad ones slow down your browser, harvest your data, and eventually get abandoned by their developers.

I’ve tried probably 50+ productivity extensions over the years. These five are the ones I still use daily.

1. uBlock Origin (Ad Blocking)

Yes, I know, “just pay for ad-free” is the ethical response. But ads on the modern web aren’t just annoying – they’re security risks, privacy invasions, and massive performance drags.

uBlock Origin is fast, open source, and blocks ads effectively without selling your data to advertisers like some other ad blockers do.

Beyond ads, it blocks trackers and malware sites. The performance improvement from not loading dozens of ad scripts on every page is genuinely noticeable.

Fair warning: some sites detect ad blockers and restrict access. For sites I genuinely want to support, I whitelist them. But the default browsing experience is so much better with ads blocked that I can’t imagine going back.

2. Bitwarden (Password Manager)

If you’re still reusing passwords or using variations of the same password, you’re one data breach away from having multiple accounts compromised.

Password managers solve this by generating and storing unique passwords for every site. Bitwarden is free, open source, and works across devices.

The browser extension autofills passwords and can generate new ones when you create accounts. The security improvement is massive, and the convenience is actually better than remembering passwords manually.

I’ve tried LastPass, 1Password, and Dashlane. Bitwarden is just as good for most use cases and free for the core features.

3. OneTab (Tab Management)

I’m a serial tab hoarder. 40+ tabs open is not unusual for me, which kills browser performance and makes finding anything impossible.

OneTab consolidates all your tabs into a single list with one click. You can restore them individually or all at once. The memory savings are significant – dozens of tabs become one.

It’s also great for project-based work. When switching contexts, I can OneTab everything, work on something else, then restore the previous project’s tabs later.

The extension is simple, fast, and doesn’t try to sell you a subscription service. It just does one thing well.

4. Dark Reader (Dark Mode for Everything)

Dark mode isn’t just aesthetic – it reduces eye strain during long screen sessions, especially at night.

Dark Reader applies dark mode to websites that don’t have it built in. The quality varies by site (some look perfect, others are a bit off), but it’s configurable per site.

You can adjust brightness, contrast, and sepia tones. For sites where it looks bad, you can disable it and those settings persist.

This is genuinely a quality-of-life improvement if you spend hours daily in a browser. My eyes are noticeably less tired at the end of the day.

5. Vimium (Keyboard Navigation)

This one’s not for everyone, but if you like keyboard shortcuts, Vimium is incredible. It lets you navigate browsers entirely with keyboard commands.

Press ‘f’ and every clickable element gets a letter code. Type the code and it clicks that element. Scroll, switch tabs, navigate history – all without touching the mouse.

The learning curve is real, but once it becomes muscle memory, browsing is noticeably faster. I rarely use my mouse anymore except for complex web apps that don’t play well with keyboard navigation.

If you’re already comfortable with Vim (the text editor), the keybindings will feel familiar. If not, there’s a gentler learning curve, but it’s worth pushing through.

The Ones I Don’t Use Anymore

Grammarly: Used to use it, but it slows down browser performance noticeably on complex web apps. Also raises privacy concerns about sending everything you type to their servers.

Pocket: Great concept (save articles to read later), but I found it became a graveyard of articles I’d never read. If you actually use it consistently, it’s fine.

Honey/Rakuten: Coupon finders that inject themselves into checkout flows and collect shopping data. The savings are minimal and not worth the privacy trade-off for me.

Tab session managers: Tried several beyond OneTab. Most were overly complex with features I didn’t need.

Browser Choice Matters Too

Extensions work differently across browsers. Chrome has the biggest extension library. Firefox is more privacy-focused. Edge is actually decent now and uses Chrome extensions.

Safari’s extension situation has improved but is still more limited. Brave has good privacy defaults and supports Chrome extensions.

I use Firefox primarily for privacy reasons, though Chrome’s dev tools are better for web development work.

The Privacy Cost

Every extension you install can potentially:

• See every website you visit
• Read and modify page content
• Access cookies and browsing data

Only install extensions you trust from developers with good reputations. Read the permissions they request. If an extension asks for more access than seems necessary, that’s a red flag.

Open source extensions are generally safer because the code is public and reviewable. That doesn’t guarantee security, but it helps.

Performance Trade-offs

Each extension adds overhead. Too many extensions will slow down your browser noticeably.

I keep my extension list minimal – the five above plus one or two work-specific tools. Everything else gets uninstalled.

You can check browser task manager (usually Shift+Esc in Chrome/Edge) to see which extensions are consuming significant resources.

Platform-Specific Options

If you’re on a specific platform, you might have better options:

Mac users: Alfred or Raycast might replace some browser extension needs with system-level alternatives.

Windows users: PowerToys has some useful utilities that might reduce extension needs.

Linux users: You’re probably already using keyboard shortcuts extensively.

The Bottom Line

Extensions can genuinely improve productivity, but most don’t. The five I listed solve real problems and have minimal downsides.

Install them one at a time. Use each for at least a week before adding another. Otherwise you won’t know which ones actually help versus which are just clutter.

And regularly audit your extensions. The ones you installed two years ago might not be useful anymore, or might have been abandoned by developers, or might have been sold to companies that turned them into adware.

A clean browser with five good extensions beats a bloated browser with 30 mediocre ones every time.