Dev tools · alternatives · 2026

24 alternatives to Schema Markup Validator

Validate JSON-LD, detect Microdata/RDFa

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

1
Schema Validator▲6
Free json-ld & schema.org validator tool
Nov 2025 · schemavalidator.com · its alternatives →
2TW
This website is valid JSON▲604
2020 · webdatarender.com · its alternatives →
3
React-Schemaorg: Strongly-Typed Schema.org JSON-LD for React▲16
Type-checked Schema.org JSON-LD for React. Contribute to google/react-schemaorg development by creating an account on GitHub.
2019 · github.com · its alternatives →
4
Schema Validator Browser Extension▲122
Boost SEO with One-Click Schema & Rich Results Testing
2023 · sproutseo.io · its alternatives →
5
Schema Markup Generator (JSON-LD)▲8
Free schema markup generator.
Jul 2026 · nativewp.app · its alternatives →
6
Verify JSON using minimal schema▲91
verify-json. Contribute to yusufnb/verify-json development by creating an account on GitHub.
2020 · github.com · its alternatives →
7
JSON storage bins with schema validation▲74
2018 · npoint.io · its alternatives →
8
Structured data validator▲11
A full-featured schema.org rich cards validation tool
2020 · redirection.io · its alternatives →
9
Pg_jsonschema – A Postgres extension for JSON validation▲203
pg_jsonschema is a solution we're exploring to allow enforcing more structure on json and jsonb typed postgres columns. We initially wrote the extension as an excuse to play with pgx, the rust framework for writing postgres extensions. That let us lean on existing rust libs for validation (jsonschema), so the extension's implementation is only 10 lines of code :) https://github.com/supabase/pg_jsonschema/blob/fb7ab09bf6050... happy to answer any questions!
2022 · github.com · its alternatives →
10
Schema Score▲3
JSON-LD SEO analyzer with a 0–100 completeness score
Jun 2026 · its alternatives →
11
Free JSON-LD Schema Markup Builder▲12
The best schema builder for SEOs (100% FREE)
2024 · focuskeywordfinder.com · its alternatives →
12
Schema-DTS, TypeScript Shims for Schema.org and the Semantic Web▲27
JSON-LD TypeScript types for Schema.org vocabulary - google/schema-dts
2019 · github.com · its alternatives →
13
Free Schema Markup Generator▲4
Generate JSON-LD schema markup without coding
Jun 2026 · msangeetha.com · its alternatives →
14
Hallanalysis - Schema Generator▲6
JSON-LD Schema Generator for SEO
2019 · cloud22.com · its alternatives →
15
Schema API▲143
Extract structured content from the semantic web
2021 · its alternatives →
16
JSON-LD Schema Markup Generator▲4
Build clean JSON-LD schema without writing code
Aug 2026 · loganmosby.com · its alternatives →
17
JSON-LD Schema Generator▲1
Generate valid JSON-LD schema markup in seconds — no coding
Aug 2026 · frostrank.com · its alternatives →
18
Generate React forms from JSON form schemas▲107
Generate, validate, and parse React forms using Mongoose-inspired JSON schemas - SteveVitali/react-form-generator
2015 · github.com · its alternatives →
19
GraphQL Inspector▲107
Bulletproof your GraphQL API
2019 · the-guild.dev · its alternatives →
20
Flawless Schema▲1
Schema Markup and Structured Data to Boost Your SEO
Mar 2026 · flawlessschema.com · its alternatives →
21
schema-org-java▲3
Java library for working with Schema.org data in JSON-LD
2022 · its alternatives →
22
Json Sage▲6
Free online json viewer, editor & validator
2025 · jsonsage.com · its alternatives →
23
Schema Source by Tabstack▲41
Turn any URL into a JSON Schema, Zod, or Pydantic model
Jun 2026 · schema.tabstack.ai · its alternatives →
24
FAQ Page Schema Generator▲13
Increase your search visibility instantly
2020 · vikenpatel.com · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →