The Best Browser Extensions for Web Designers & Developers

Browser extensions are one of those quiet workflow multipliers. When they’re good, they save you time dozens of times a day. When they’re bad, they slow your browser to a crawl and clutter everything.

This post is a summary of a Tuesday Toolbox discussion inside The Admin Bar community, where agency owners shared the browser extensions that have earned a permanent place in their workflow — and why.

There’s no “best” extension here. But there are some very clear favorites, and a few strong patterns worth paying attention to.

The Most Mentioned Tools

These extensions came up again and again in the discussion:

• Hoverify
• 1Password
• GoFullPage
• WhatFont
• Wappalyzer
• SuperDev
• Bitwarden
• OneTab
• FireShot

A long tail of other extensions came up as well (we’ll get to those).

Why Agencies Choose These Browser Extensions

Hoverify

If there was a clear consensus in the thread, this was it: Hoverify came up again and again.

• All-in-one tool for inspecting sites (SEO, images, breakpoints, headings, tech stack)
• Replaces multiple single-purpose extensions
• Used daily by developers and designers
• Some mixed opinions on UI and recent changes, but loyalty runs deep

“Hoverify is something I use every single day, multiple times a day.”

Adam

Best fit: agencies who want fewer extensions doing more work.

1Password

Not flashy, but indispensable.

• Used dozens of times a day without thinking about it
• Reliable across teams, clients, and devices
• Often mentioned as the most used extension overall

Best fit: anyone who values security and frictionless logins.

GoFullPage

Simple, focused, and widely trusted.

• Full-page screenshots with one click
• Commonly paired with Loom or FireShot
• Frequently mentioned as the “default” screenshot tool

Best fit: designers, auditors, and anyone sharing visual feedback.

WhatFont

A classic that still gets heavy use.

• Instantly identifies fonts in the browser
• Lightweight and fast
• Often paired with color pickers or CSS tools

Best fit: typography nerds and design-focused workflows.

Wappalyzer

Quick answers, fast.

• Instant overview of what a site is built with
• Helpful during audits, competitive research, and prospecting
• Often mentioned alongside Hoverify or BuiltWith

Best fit: technical audits and discovery work.

SuperDev

A frequent comparison point to Hoverify.

• Strong image and palette extraction tools
• Meta previews, PDF export, and dev utilities
• Praised for value, especially at lower price points

Best fit: developers who want power features without a large bundle.

Bitwarden

A popular alternative to 1Password.

• Open-source password manager
• Lightweight and secure
• Often mentioned alongside OneTab or productivity tools

Best fit: teams that want a solid password manager without premium pricing.

OneTab

Loved by people drowning in tabs.

• Collapses dozens of tabs into a simple list
• Reduces memory usage
• Often paired with project-based tab tools

Best fit: anyone who regularly hits “too many tabs” territory.

FireShot

Screenshot power users.

• Full-page screenshots with annotation tools
• PDF export and editing
• Often preferred when markup is needed immediately

Best fit: QA, audits, and client communication.

Notable Mentions

These extensions also came up frequently, often tied to specific workflows:

Workona
Toby
Tag Assistant / Meta Pixel Helper
Grammarly
Loom
CSS Peeper
ColorZilla
WAVE / axe DevTools
GMB Everywhere
Hunter
uBlock Origin
TabExtend
StayFocusd
Evernote Web Clipper
Dark Reader
And my personal favorite, News Feed Eradicator

Several people also mentioned non-extension tools like PowerToys, Chrome DevTools, and native OS utilities — a reminder that not everything needs to live in the browser.

Patterns We Noticed

A few themes showed up consistently:

• All-in-one tools beat collections of single-purpose extensions
• Extensions are most valuable when they replace friction, not add it
• Performance and memory usage matter more than features
• Many people actively remove extensions once a better option comes along
• Password managers and screenshots are universal use cases

“Extensions are memory hogs — I try to choose wisely (even though I fail often).”

Fabrizio

In other words: the best extensions are the ones you don’t think about — they just quietly do their job.

How to Choose the Right Browser Extensions

If you’re evaluating your own setup, these questions came up again and again:

• Is this replacing multiple tools or adding another one?
• Will I use this daily, or only once in a while?
• Does it slow my browser down?
• Can I justify it living in my toolbar long-term?
• Could this be handled by a built-in browser or OS feature instead?

These recommendations came directly from a Tuesday Toolbox discussion inside The Admin Bar community. Each week, we pick a new topic and crowdsource real-world tools and workflows from agency owners doing the work.

If you want to help shape this library, join the conversation next Tuesday.