# Schemantra review (2026): is it any good? > Free web-based JSON-LD generator for every schema.org type Checked Oct 23, 2026 ยท graded Oct 23, 2026 by ToolGPA. Schemantra is a free web app, marked as a beta, for writing schema.org markup in JSON-LD without code. It covers the whole schema.org vocabulary, about 1,350 types and 1,450 properties, and lets you nest related entities as sub-schemas to build a knowledge graph of a page, shown as a diagram. Markup is copied from the app and added to pages by hand or through a tag manager. - **Category:** Technical SEO & Site Audits - **Made by:** Schemantra Inc. - **Website:** https://schemantra.com - **Runs on:** Web - **Who should skip it:** Watch out: it's still labeled a beta, the footer copyright reads 2022 and the newest blog posts are from March 2024. - **Facts last checked:** Oct 23, 2026 ## Pricing As of Oct 23, 2026, Schemantra is free to use. - **Pricing model:** Free - **Free plan:** 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. | Plan | Price | What you get | | --- | --- | --- | | Free | $0 | Sign in to create, link and save schema markup of any schema.org type, with no limits stated. | Read from https://schemantra.com/ on Oct 23, 2026. Prices change, so confirm with Schemantra before buying. ## Key features - **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. ## Good for - SEOs who need schema.org types that simpler generators leave out - Describing how the people, places and products on a page relate to each other - Learning structured data from worked examples ## Worth knowing - 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. ## ToolGPA grades **GPA: 2.6 out of 4**, graded Oct 23, 2026. Schemantra is a free web app for writing schema.org markup of any type, with linked sub-schemas and a diagram of how a page's entities connect. It's still labeled a beta, the footer reads 2022 and the newest posts are from March 2024, it doesn't test or deploy anything, and you add the JSON-LD by hand. If you want markup checked or kept up for you, look elsewhere. - **Value for money: A.** Free: 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: A.** Free outright, with no limits stated. You need an account to create and save schemas. - **Features: D.** One 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: C.** No 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: C.** Web only, with no integrations or API on record. Markup leaves the app by copy and paste, or through a tag manager you set up. These are ToolGPA's own grades. Graded from this listing, whose facts were read from Schemantra'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 - Schemantra's GPA of 2.6 is higher than 56 of the 83 other technical SEO tools we grade, and level with 7. - It stands best on free plan and trial (A, above 62 of 83) and worst on features (D, above 0). - Schemantra has no paid plan. - On features, ease of use and platforms it scores 1.7 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.** Schemantra 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 2.6 is higher than 56 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 - [Schema.dev](https://toolgpa.com/tools/schema-dev): Free point-and-click schema markup builder for Chrome. [Compare](https://toolgpa.com/compare/schema-dev-vs-schemantra) - [Schema App](https://toolgpa.com/tools/schema-app): Managed enterprise schema markup and content knowledge graph. [Compare](https://toolgpa.com/compare/schema-app-vs-schemantra) - [WordLift](https://toolgpa.com/tools/wordlift): Knowledge graph, schema markup and AI content for search and AI. [Compare](https://toolgpa.com/compare/schemantra-vs-wordlift) - [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-markup-validator-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-schemantra) ## Sources The prices, plans, platforms and features above were read from these pages on Oct 23, 2026: - https://schemantra.com/ - https://schemantra.com/guide/ - https://schemantra.com/blog/ Page: https://toolgpa.com/tools/schemantra Listed by ToolGPA (toolgpa.com).