Schema.dev vs Schemantra (2026): which should you pick?
As of Oct 23, 2026, Schema.dev grades higher than Schemantra: 2.8 against 2.6 out of 4.0.
Checked Oct 23, 2026 · graded Oct 23, 2026 by ToolGPA
Schema.dev grades higher on ease of use. They get the same grade on value for money, the free plan, features and platforms.
Price, platforms and features side by side. The table says where each price was read and when.
Which one is for you
Pick Schema.dev if
- Fits if you mark up a handful of pages and can paste JSON-LD into your CMS
- Works for checking what structured data a page already has
Look elsewhere if
- Skip it if you don't use Chrome, as it's a Chrome extension only
- Too light for whole sites, as markup is built page by page and the Deployer isn't out
- Watch out: the extension's latest version, 0.80.1, is from March 2025, and the site's newest blog posts are from 2020
- Tight if you want the Schema Tester or its API, which sit in a beta behind a sign-up
- Not for you if you want the markup added for you, as you copy and paste it yourself
Pick Schemantra if
- Fits if you need a schema.org type that Google's rich result tools don't cover
- Works for mapping how the entities on a page relate before you write the markup
Look elsewhere if
- Watch out: it's still labeled a beta, the footer copyright reads 2022 and the newest blog posts are from March 2024
- Not for you if you want markup tested, as it only writes it
- Too light for sites that need markup added and monitored, as you paste it in yourself and nothing is checked later
- Skip it if you don't want an account, which is needed to create and save schemas
How we grade them
| 2.8GPASchema.devGood | 2.6GPASchemantraGood | |
|---|---|---|
| Value for money | AFree, from seoClarity, with no paid plan: the Schema Builder extension, its built-in tester and the Schema Tester beta. Anyone can install it. | AFree: an account builds, saves and draws markup for any schema.org type, and the site shows no paid plan. Custom ontology work is a separate service with no prices shown. |
| Free plan and trial | AEverything is free, with no plan to upgrade to. The Schema Tester and its API need a beta sign-up. | AFree outright, with no limits stated. You need an account to create and save schemas. |
| Features | DOne 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. | DOne narrow job: writing JSON-LD across the full schema.org vocabulary, 1,353 types and 1,448 properties, with sub-schemas and a graph view. It doesn't test markup, add it to pages or watch it afterward. |
| Ease of use | BNo 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. | CNo rating on record. You sign in and build each schema field by field, and nesting sub-schemas means knowing how schema.org types relate. There's a free course and step-by-step guides. |
| Platforms and integrations | CA Chrome extension only, with no integrations. There's no plugin that adds the markup to your site for you. | CWeb only, with no integrations or API on record. Markup leaves the app by copy and paste, or through a tag manager you set up. |
| Best for | building JSON-LD for one page, free | free JSON-LD for any schema.org type |
The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: Schema.dev and Schemantra. How we grade
Price against what you get
Schema.dev has no paid plan and scores 2.0 out of 4 on features, ease of use and platforms. Schemantra has no paid plan and scores 1.7.
Schema.dev scores higher for the same starting price. Of the other technical SEO tools on the chart, none scores higher than Schema.dev for less, and none scores higher than Schemantra for less.
Features, ease of use and platforms, averaged
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
Where they differ
In commonFree planNo-codeSchema markup
At a glance
| Schema.dev | Schemantra | |
|---|---|---|
| Pricing | Free | Free |
| Starts at | Free | 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 account to build, save and visualize JSON-LD markup for any schema.org type; the site shows no paid plan. |
| Free trial | None listed | None listed |
| Web | ||
| Browser extension | ||
| Made by | seoClarity Labs | Schemantra Inc. |
| Price read from | schema.dev | schemantra.com |
| Checked | Oct 23, 2026 | Oct 23, 2026 |
Worth knowing
Schema.dev
- 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.
Schemantra
- It is labeled as a beta; the footer copyright reads 2022 and the newest blog posts date from March 2024.
- It only writes markup: you add the JSON-LD to your pages yourself or through a tag manager, and nothing is monitored afterward.
- An account is needed to create and save schemas.
- Custom ontology building is offered as a service, with no prices shown.
Key features
Schema.dev
- 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.
Schemantra
- The full schema.org vocabulary
- Its guide lists 1,353 schema types and 1,448 properties, so less common types can be built as well as the ones Google uses for rich results.
- Sub-schemas and linked entities
- Properties that are themselves types, such as an organization's founder as a Person, are added as sub-schemas linked to the main entity.
- Knowledge graph view
- Shows the entities on a page and how they relate to the main one as a diagram while you build.
- Industry starting points
- Lists the usual types for local businesses, healthcare, real estate, ecommerce, car dealers, airlines, hotels and publishers.
- Free course and guides
- A schema markup crash course with a car dealership example, step-by-step guides, and a forum for questions.
Plans
Schema.dev
Free$0
The Schema Builder extension for Chrome with built-in testing, plus the Schema Tester beta.
Schemantra
Free$0
Sign in to create, link and save schema markup of any schema.org type, with no limits stated.
Common questions
Which is cheaper, Schema.dev or Schemantra?
As of Oct 23, 2026, both Schema.dev and Schemantra are free to use.
Which has a free plan, Schema.dev or Schemantra?
As of Oct 23, 2026, both Schema.dev and Schemantra have a free plan.
Which platforms do Schema.dev and Schemantra run on?
As of Oct 23, 2026, only Schema.dev lists a browser extension and only Schemantra lists a web app. A platform missing from a listing is one its maker's pages did not mention.
More comparisons
How this page was made
- The verdict at the top follows a fixed rule. When both tools are in the same category and either is in our top three for it, the verdict follows that ranking: the higher-placed tool is our pick. The top three weigh who each tool suits as well as its grades, so a pick can go against the GPA. Otherwise the page does not pick one and says which grades higher: the higher GPA first; on a tie, the one with a free plan, then the one that starts cheaper in dollars a month, counted the same way for both; if they are still level, what the choice depends on.
- The grades are our own, from each tool’s review or report card. The GPA is their average.
- Prices, plans and platforms come from each tool’s listing. The table above says where each price was read and when.
- The differences and the answers to the questions are worked out from those listings.