# Web Developer review (2026): is it any good? > Free browser toolbar of page inspection and validation tools Checked Oct 23, 2026 ยท graded Oct 23, 2026 by ToolGPA. 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. - **Category:** SEO Browser Extensions - **Made by:** Chris Pederick - **Website:** https://chrispederick.com/work/web-developer/ - **Runs on:** Browser extension - **Who should skip it:** Not for you if you want search, ranking or backlink data, as it has none. - **Facts last checked:** Oct 23, 2026 ## Pricing As of Oct 23, 2026, Web Developer is free to use. - **Pricing model:** 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. | Plan | Price | What you get | | --- | --- | --- | | Free | $0 | Every tool in the extension, free on all four browsers, with optional donations to the developer. | Read from https://chrispederick.com/work/web-developer/ on Oct 23, 2026. Prices change, so confirm with Web Developer before buying. ## 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. ## Good for - Checking a page's alt text, hidden elements and markup by hand - Developers and SEOs who use Firefox, Edge or Chrome interchangeably - Quick front-end checks without opening the browser's developer tools ## 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. ## ToolGPA grades **GPA: 3.0 out of 4**, graded Oct 23, 2026. 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. - **Value for money: A.** Free and open source in the Chrome, Edge, Firefox and Opera stores; the developer asks for optional donations. - **Free plan and trial: A.** Free outright: every tool, on all four browsers, with nothing held back. - **Features: C.** Alt 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. - **Ease of use: B.** No rating on record, but nothing to set up: click the toolbar button and pick a tool from the menu. - **Platforms and integrations: C.** Chrome, Edge, Firefox and Opera on Windows, macOS and Linux, but computers only, with no integrations. These are ToolGPA's own grades. 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. ## Where it 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. The category's chart of price against score: https://toolgpa.com/charts/seo-extensions ## Keep it, or make your own? **Keep it.** Web Developer is free, so making your own would save you nothing. - You could not: A crawler that checks every page of a site. A judgement by ToolGPA from this listing, by rules that are the same for every tool. Nothing was built to test it. **Tags:** Open source, Site audit ## Alternatives - [SEOquake](https://toolgpa.com/tools/seoquake): Free Semrush extension for page audits and metrics in Google results. [Compare](https://toolgpa.com/compare/seoquake-vs-web-developer) - [Detailed SEO Extension](https://toolgpa.com/tools/detailed-seo-extension): Free Chrome and Firefox extension for one-click on-page SEO checks. [Compare](https://toolgpa.com/compare/detailed-seo-extension-vs-web-developer) - [META SEO inspector](https://toolgpa.com/tools/meta-seo-inspector): Free Chrome extension that lays out a page's hidden metadata. [Compare](https://toolgpa.com/compare/meta-seo-inspector-vs-web-developer) - [View Rendered Source](https://toolgpa.com/tools/view-rendered-source): Free Chrome extension comparing raw HTML with the rendered page. [Compare](https://toolgpa.com/compare/view-rendered-source-vs-web-developer) - [HeadingsMap](https://toolgpa.com/tools/headingsmap): Free extension that maps a page's headings and flags broken levels. [Compare](https://toolgpa.com/compare/headingsmap-vs-web-developer) ## Sources The prices, plans, platforms and features above were read from these pages on Oct 23, 2026: - https://chrispederick.com/work/web-developer/ - https://chrispederick.com/work/web-developer/help/ - https://chrispederick.com/work/web-developer/history/chrome/ - https://chrispederick.com/work/web-developer/source/ - https://chromewebstore.google.com/detail/web-developer/bfbameneiokkgbdmiekhjnmfkcnldhhm - https://addons.mozilla.org/en-US/firefox/addon/web-developer/ Page: https://toolgpa.com/tools/web-developer Listed by ToolGPA (toolgpa.com).