Browser extensions promise to make web browsing better. Most deliver minimal value while consuming memory and potentially compromising privacy.

Here are the extensions that actually earn their place in your browser after testing dozens.

uBlock Origin: The Only Ad Blocker You Need

uBlock Origin blocks ads and trackers without selling your data or letting advertisers pay for exceptions.

What works: extremely effective blocking, minimal resource usage, free with no paid tiers, open source.

What doesn’t work: some websites detect and complain about ad blocking, occasionally breaks legitimate site features.

Testing results: blocked 90%+ of ads and trackers across hundreds of sites. Page load speeds improved noticeably.

Worth it? Absolutely essential. Install immediately if you haven’t already.

Bitwarden: Password Management

Bitwarden’s browser extension integrates with their password manager for autofill and generation.

What works: reliable autofill, secure password generation, works across all browsers, free tier is generous.

What doesn’t work: occasional autofill failures on complex forms, requires manual intervention sometimes.

Testing results: reduced password-related friction significantly. Autofill worked correctly about 95% of the time.

Worth it? Essential if you use Bitwarden. If you don’t use a password manager yet, this extension plus the Bitwarden service solves that problem.

Pocket: Read It Later

Pocket saves articles for later reading, syncs across devices, and strips distracting formatting.

What works: one-click saving, good reading view, offline access, tags for organization.

What doesn’t work: premium features require subscription, occasional sync delays, reading view sometimes breaks complex layouts.

Testing results: built up a useful reading backlog that I actually worked through. The distraction-free reading view is excellent.

Worth it? Yes for people who find articles worth reading but don’t have time immediately. Alternatives like Instapaper work similarly.

Grammarly: Writing Assistance

Grammarly checks grammar, spelling, and style across all text inputs in your browser.

What works: catches genuine errors, works in email, social media, and web forms, unobtrusive until needed.

What doesn’t work: privacy concerns about sending all text to Grammarly’s servers, occasional false positives, premium upselling.

Testing results: caught embarrassing typos in emails and reduced editing time. The privacy trade-off is real though.

Worth it? For people who write a lot in browser, yes. For privacy-conscious users, consider offline alternatives.

Momentum: New Tab Replacement

Momentum replaces the new tab page with inspiring photos, todo list, and focus quote.

What works: visually pleasant, simple task list, customizable focus message.

What doesn’t work: uses resources for purely aesthetic benefit, premium features require subscription, questionable productivity impact.

Testing results: subjectively pleasant but objectively unnecessary. Whether it’s worth the memory overhead depends on your priorities.

Worth it? If you value aesthetics and the todo list helps you focus, maybe. For pure functionality, unnecessary.

Dark Reader: Universal Dark Mode

Dark Reader applies dark mode to websites that don’t offer it natively.

What works: reduces eye strain on bright websites, customizable darkness levels, works on most sites.

What doesn’t work: occasionally breaks layouts, uses extra resources processing pages, some sites look worse in forced dark mode.

Testing results: genuinely helped with late-night browsing. Occasional layout issues required disabling it on specific sites.

Worth it? For people who prefer dark mode and browse at night, yes. Otherwise, unnecessary.

Honey/Rakuten: Automatic Coupon Codes

These extensions test coupon codes at checkout automatically.

What works: occasionally finds working discount codes, completely automatic, free to use.

What doesn’t work: tracks all browsing to know when you’re shopping, privacy concerns, works rarely enough to question value.

Testing results: found working codes maybe 5% of the time. The tracking trade-off for minimal savings is questionable.

Worth it? Depends on your privacy tolerance and shopping frequency. The actual savings are minimal for most people.

OneTab: Tab Management

OneTab collapses all open tabs into a list, reducing memory usage and tab clutter.

What works: dramatically reduces browser memory usage, helps manage tab hoarding, free.

What doesn’t work: collapsed tabs require reload when restored, easy to lose track of saved tab groups.

Testing results: helped manage tab overload during research projects. Memory usage dropped noticeably.

Worth it? For chronic tab hoarders, yes. For people with tab discipline, unnecessary.

What to Avoid

Extensions requesting broad permissions they don’t need for their stated function. This is often data harvesting.

Free VPN extensions. They’re either insecure or selling your browsing data. Paid VPN services are worth the cost.

“Productivity” extensions that add more complexity than they solve. Most to-do extensions fall in this category.

Anything you haven’t used in the past month. If you forgot it exists, uninstall it.

The Extension Audit

Review installed extensions quarterly. Remove anything you’re not actively using.

Check permissions for remaining extensions. Minimize extensions with broad access to all websites.

Consider whether browser-based tools should be standalone apps instead. Web-based todo lists might work better as dedicated applications.

Performance Impact

Every extension uses memory and processing power. Five well-chosen extensions are better than twenty marginally useful ones.

If your browser feels slow, disable extensions one at a time to identify performance impacts.

Some extensions (particularly ad blockers) actually improve performance by blocking resource-heavy content.

Privacy Considerations

Extensions can see everything you do in your browser. Choose carefully.

Prefer open-source extensions where code is auditable. uBlock Origin and Bitwarden are examples.

Avoid extensions from unknown developers, especially free tools that should cost money. Your data is the product.

Cross-Browser Compatibility

Most extensions work in Chrome, Edge, and other Chromium browsers. Firefox support is common but not universal.

Safari extensions are more limited. If you use Safari, verify extension availability before relying on specific tools.

What I Actually Use

uBlock Origin for ad blocking. Non-negotiable.

Bitwarden for password management. Essential.

Pocket for saving articles I don’t have time to read immediately.

Dark Reader for evening browsing.

That’s it. Everything else I’ve tried gets removed during quarterly audits because I don’t actually use it enough to justify the overhead.

Bottom Line

Most browser extensions aren’t worth installing. The ones that are tend to fall into a few categories: blocking unwanted content, managing passwords, or saving things for later.

Start minimal. Add extensions only when you have specific problems to solve, not because they seem interesting.

Audit regularly and remove ruthlessly. Extensions you don’t actively use are just consuming resources and potentially compromising privacy.

The best browser extensions are the ones you forget about because they quietly make browsing better without demanding attention.

Install uBlock Origin and Bitwarden. Everything else is optional based on your specific needs.