# Schema.dev review (2026): is it any good? > Free point-and-click schema markup builder for Chrome Checked Oct 23, 2026 ยท graded Oct 23, 2026 by ToolGPA. Schema.dev is a set of free structured data tools from seoClarity. Its main tool, the Schema Builder extension for Chrome, generates JSON-LD markup for a page through a guided form whose fields can be filled by clicking on page elements, and checks the result for errors and warnings. A testing tool and API are in beta, and an automatic deployer is still described as coming soon. - **Category:** Technical SEO & Site Audits - **Made by:** seoClarity Labs (since 2020) - **Website:** https://schema.dev - **Runs on:** Browser extension - **Who should skip it:** Skip it if you don't use Chrome, as it's a Chrome extension only. - **Facts last checked:** Oct 23, 2026 ## Pricing As of Oct 23, 2026, Schema.dev is free to use. - **Pricing model:** Free - **Free plan:** Everything is free: the Schema Builder extension with its built-in tester, and the Schema Tester interface and API, which are in beta. - **Free trial:** None listed. | Plan | Price | What you get | | --- | --- | --- | | Free | $0 | The Schema Builder extension for Chrome with built-in testing, plus the Schema Tester beta. | Read from https://schema.dev/ on Oct 23, 2026. Prices change, so confirm with Schema.dev before buying. ## Key features - **Point-and-click builder:** A step-by-step form for each schema type, filled by clicking elements on the page or typing, with text transformations and custom values. - **Dozens of schema types:** Covers the types Google supports for rich results and more; the March 2025 update added vehicle listing markup. - **Required and recommended fields:** Guides you through the required, recommended and optional properties for each type, so less schema knowledge is needed. - **Detection and testing:** Finds structured data already on a page and tests generated markup, showing errors and warnings. - **JSON-LD output:** Produces formatted JSON-LD that you copy and paste into the page or your CMS. ## Good for - Marketers adding schema markup to a few pages without writing JSON-LD by hand - Checking the structured data already on a page while browsing - Small sites that do not need a paid schema platform ## Worth knowing - It works only as a Chrome extension; there is no plugin that adds the markup to your site for you. - The Schema Tester and its API are a beta behind a sign-up, and the Schema Deployer is still marked as coming soon. - The extension's latest version, 0.80.1, dates from March 2025, and the site's newest blog posts are from 2020. - Markup is built page by page; templates that cover many pages at once are planned for the unreleased Deployer. ## ToolGPA grades **GPA: 2.8 out of 4**, graded Oct 23, 2026. Schema.dev's Chrome extension builds JSON-LD markup for a page through a guided form you fill by clicking on the page, and tests it, for free. It does one page at a time, you paste the markup in yourself, the tester is a beta, the deployer is still marked coming soon, and the last update was March 2025. For markup across many pages, look elsewhere. - **Value for money: A.** Free, from seoClarity, with no paid plan: the Schema Builder extension, its built-in tester and the Schema Tester beta. Anyone can install it. - **Free plan and trial: A.** Everything is free, with no plan to upgrade to. The Schema Tester and its API need a beta sign-up. - **Features: D.** One narrow job: a form per schema type that outputs JSON-LD for a single page, with error and warning checks. No deployment and no templates for many pages, and the Deployer that would add them is still coming soon. - **Ease of use: B.** No rating on record. You install the extension, open a page and fill the form by clicking elements, with required and recommended fields marked. Nothing to connect. - **Platforms and integrations: C.** A Chrome extension only, with no integrations. There's no plugin that adds the markup to your site for you. These are ToolGPA's own grades. Graded from this listing, whose facts were read from Schema.dev's own pages on 23 October 2026. Not based on using the product, and shorter than our full reviews. ## Where it stands among technical SEO tools - Schema.dev's GPA of 2.8 is higher than 64 of the 83 other technical SEO tools we grade, and level with 8. - It stands best on free plan and trial (A, above 62 of 83) and worst on features (D, above 0). - Schema.dev has no paid plan. - On features, ease of use and platforms it scores 2.0 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/technical-seo ## Keep it, or make your own? **Keep it.** Schema.dev is free, so making your own would save you nothing. And it is not the kind of software a weekend replaces. It is one of the better ones too: its GPA of 2.8 is higher than 64 of the 83 other technical SEO tools we grade. - You could make: Schema markup: an app builder makes this well. - You could not: A builder that other people can use without writing code. A judgement by ToolGPA from this listing, by rules that are the same for every tool. Nothing was built to test it. **Tags:** Schema markup, No-code ## Alternatives - [Schemantra](https://toolgpa.com/tools/schemantra): Free web-based JSON-LD generator for every schema.org type. [Compare](https://toolgpa.com/compare/schema-dev-vs-schemantra) - [Google Rich Results Test](https://toolgpa.com/tools/google-rich-results-test): Free Google check of which rich results a page's structured data earns. [Compare](https://toolgpa.com/compare/google-rich-results-test-vs-schema-dev) - [Schema Markup Validator](https://toolgpa.com/tools/schema-markup-validator): Free schema.org checker for any structured data on a page or snippet. [Compare](https://toolgpa.com/compare/schema-dev-vs-schema-markup-validator) - [SEOMarkup Schema Inspector](https://toolgpa.com/tools/seomarkup-schema-inspector): Free, open-source Chrome extension that shows a page's JSON-LD. [Compare](https://toolgpa.com/compare/schema-dev-vs-seomarkup-schema-inspector) - [Schema App](https://toolgpa.com/tools/schema-app): Managed enterprise schema markup and content knowledge graph. [Compare](https://toolgpa.com/compare/schema-app-vs-schema-dev) ## Sources The prices, plans, platforms and features above were read from these pages on Oct 23, 2026: - https://schema.dev/ - https://schema.dev/schema-builder/ - https://schema.dev/schema-tester/ - https://schema.dev/schema-deployer/ - https://schema.dev/about-us/ - https://schema.dev/our-journey/ - https://chromewebstore.google.com/detail/schema-builder-for-struct/klohjdodjjeocpbpadmkcndjoadijgjg Page: https://toolgpa.com/tools/schema-dev Listed by ToolGPA (toolgpa.com).