
SerpApi
Moz
Searchmetrics Suite
DemandSphere
Clearscope
Direction Local
Pro Rank Tracker
DataForSEO offers API data for SEO companies that deliver results of tasks for Rank tracking, SERP, Keyword data and On-page APIs.

Schema App
Schema.org
iLoveSchema
SchemaGen
Schema Synth
Rank Math
Yoast SEO
Free schema markup validator for JSON-LD and Schema.org structured data. Validate schema markup for Google Rich Results compliance. Online schema validator tool.

Which is more popular?
Based on our record, DataForSEO seems to be more popular. It has been mentioned 10 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | dataforseo.com | schemavalidator.com |
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What each product offers, as listed by its team.


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An editorial look at what each product does well and who it suits.


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Are You Nesting Schema Wrong? JSON-LD Schema Validator Tips for Nesting with @ID | Technical SEO
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How often each product is chosen within a category, 0–100% relative to the other.


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Recommendations tracked on public social media and blogs since March 2021.


We priced 656 keywords in the AI and developer-tooling space using DataForSEO volume and difficulty data, and 72 of the 656 cleared our winnable bar: 150-6,000 monthly searches, difficulty 20 or below, a genuine technical term, and at... - Source: dev.to / about 2 months ago
I asked it to integrate with https://dataforseo.com/ api which is 10x cheaper than the ahrefs or semrush apis (it's real data). - Source: Hacker News / about 2 years ago
So far I used dataforseo.com to get the data I need (they have a large database with 4.8 billion keywords), and I could create some cool tools with it! I share the first version of the tutorial on my website called amigocci.io but I... Source: over 3 years ago
Tracking Schema Validator since Nov 2025.
When comparing DataForSEO and Schema Validator, you can also consider the following products.

Access real-time results from Google and 100+ search engines with a simple API. No proxies, CAPTCHAs, or parsing required.
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Schema App empowers the Digital Marketer to own their schema markup strategy through to implementation without ever writing code.
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Backed by industry-leading data and the largest community of SEOs on the planet, Moz builds tools that make inbound marketing easy.
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Schema.org provides schemas for structured data on the Internet, on web pages, in email messages, and beyond.
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Instantly generate and validate JSON-LD Schema Markup for FAQs, Products, Articles, Local Business, Reviews, and more. 100% free, fully Google-compliant, and easy to use
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