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Web Developer review (2026): is it any good?

Free browser toolbar of page inspection and validation tools

FreeSEO ExtensionsChecked Oct 23, 2026 · graded Oct 23, 2026 by ToolGPA
Visit chrispederick.comFree guide

Web Developer report card

3.0GPA

Very good · out of 4.0 · graded Oct 23, 2026

Best for a toolbar of page inspection tools

Web Developer adds a toolbar of page tools, alt and title attributes, broken images, element outlines, live CSS editing, cookies, forms and links to HTML and accessibility validators, free on Chrome, Edge, Firefox and Opera. It's a general developer toolbox with no search or ranking data, the Opera version dates from 2017, and the latest release, 3.0.1, is from June 2024.

Who Web Developer is for

  • Fits if you check alt text, hidden elements and markup by hand
  • Works for people who switch between Firefox, Edge and Chrome and want the same tools in each

Who Web Developer is not for

  • Not for you if you want search, ranking or backlink data, as it has none
  • Watch out: the latest release is 3.0.1 from June 2024, built in the developer's spare time with no release dates
  • Skip it if you're on Opera, where the version is 0.2.2 from February 2017
  • Tight if you're on Firefox, which lacks the disable features, Display Style Information and the context menu
See the alternatives

Why Web Developer gets a 3.0

Five grades, each with its reason. The GPA is their average: an A is 4 points, an F is none.

  • AValue for moneyFree and open source in the Chrome, Edge, Firefox and Opera stores; the developer asks for optional donations.
  • AFree plan and trialFree outright: every tool, on all four browsers, with nothing held back.
  • CFeaturesAlt and title attributes, broken images, element outlines, hidden elements, live CSS, cookies, forms, rulers, responsive previews and validator links. A large toolbox, but only part of it is SEO, and there's no search or ranking data.
  • BEase of useNo rating on record, but nothing to set up: click the toolbar button and pick a tool from the menu.
  • CPlatforms and integrationsChrome, Edge, Firefox and Opera on Windows, macOS and Linux, but computers only, with no integrations.

What these grades rest on. Graded from this listing, whose facts were read from the developer's own pages and its Chrome and Firefox store listings on 23 October 2026. Not based on using the product, and shorter than our full reviews. How we review and grade.

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Web Developer: 3.0 GPA on ToolGPA

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Where Web Developer stands among SEO browser extensions

Web Developer's GPA of 3.0 is higher than 17 of the 34 other SEO browser extensions we grade, and level with 16.

It stands best on free plan and trial (A, above 5 of 34) and worst on platforms and integrations (C, above 0).

Web Developer has no paid plan.

On features, ease of use and platforms it scores 2.3 out of 4. Nothing scores higher for less, though at least one tool matches that score at a lower price.

Each grade against the category

Every bar is all 35 SEO browser extensions we grade, cut by the letter each got. Web Developer’s own letter is outlined.

  • AValue for moneyAbove 4 of 34, level with 30
  • AFree plan and trialAbove 5 of 34, level with 29
  • CFeaturesAbove 14 of 34, level with 18
  • BEase of useAbove 3 of 34, level with 31
  • CPlatforms and integrationsAbove 0 of 34, level with 32

Price against what you get

Each dot is one of 34 SEO browser extensions. Further left costs less, and higher up scores better on features, ease of use and platforms. Point at a dot to see which tool it is.

Features, ease of use and platforms, averaged

C2.0B3.0A4.0Free$5$10$20$50More for lessCosts more, scores moreCosts less, scores lessCosts more, scores lessWeb Developer

What paid plans start at, a month (each step along is roughly double) →

  • The best score at each price
  • Has a free plan
  • No free plan
The full chart, and the best SEO browser extensions at every price

Keep Web Developer, or make your own?

Keep it

Web Developer is free, so making your own would save you nothing.

What you could not

  • A crawler that checks every page of a site.

What this rests on. Web Developer’s listing: what it does, where it runs, what it plugs into and what it costs. It is a judgement about the kind of software this is. We have not built a replacement for it, and making your own means looking after it too. How we decide, and every tool’s verdict.

What is Web Developer?

Web Developer is a free, open-source browser extension by Chris Pederick that adds a toolbar button full of tools for inspecting and changing the page you are viewing. It can outline elements, show alt and title attributes, find broken images, edit CSS live, view cookies and forms, and send a page to HTML and accessibility validators. It is available for Chrome, Edge, Firefox and Opera.

Worth knowing

  • The latest release, 3.0.1, dates from June 2024; the developer works on it in spare time and gives no release dates.
  • The Opera version is much older, version 0.2.2 from February 2017.
  • The Firefox version lacks the disable features, Display Style Information and the context menu, because Firefox removed the APIs.
  • It is a general web developer toolbox, with no search or ranking data; its SEO uses are page-level checks.

Key features

Image and attribute checks
Display alt attributes, image dimensions and title attributes on the page, replace images with their alt text, and find broken images.
Outline and element information
Outline elements with optional labels, show hidden elements and tag names, and inspect an element's details as you point at it.
Validators
Send the page to online HTML and accessibility validators from the toolbar; the help says these third-party features are the only ones that pass data on.
Edit CSS and print styles
Edit a page's CSS live in a panel, view print styles, and hide background or all images to see the page without them.
Cookies, forms and JavaScript
View, add and edit cookies, view form information, populate form fields, remove form validation and view a page's JavaScript.
Rulers and responsive layouts
A ruler, line guides and a color picker, plus responsive layout previews and resize sizes you configure yourself.

Web Developer pricing

As of Oct 23, 2026, Web Developer is free to use.

Starts at
Free
Free plan
The whole extension is free in the Chrome, Edge, Firefox and Opera add-on stores; the developer asks for optional donations.
Free trial
None listed
Free$0Every tool in the extension, free on all four browsers, with optional donations to the developer.

Read from chrispederick.com on Oct 23, 2026. Prices change, so confirm with Web Developer before you buy.

Pricing in detail

Web Developer alternatives

All Web Developer alternatives comparedAll SEO browser extensions

Common questions

Does Web Developer have an Android app?

No Android app was listed when its pages were read on Oct 23, 2026. Web Developer is listed for no platform we could confirm.

Does Web Developer have an iPhone app?

No iPhone app was listed when its pages were read on Oct 23, 2026. Web Developer is listed for no platform we could confirm.

Is Web Developer open source?

Yes. Web Developer is open source, according to its own site.

Sources for this page

The prices, plans, platforms and features above were read from these pages on Oct 23, 2026.