Build and Use a Free Schema Validator Tool

A checklist for building and using the free schema validator tool from Casey Builds It.

By Casey Builds It · YouTube Video 0S09HKJpwCg

1. Understanding the Tool's Purpose

Familiarize yourself with what the schema validator tool does and why it's useful.

• Understand the problem: manually checking schema markup on multiple pages is time-consuming.
• Learn how the tool automates schema checking across an entire website.
• Identify the types of structured data the tool extracts (JSON-LD and microdata).
• Recognize the benefit of finding critical SEO schema issues.
• Appreciate that the tool is free and built with Cursor AI.
• Note the target audience: SEOs, web developers, and agencies.

2. Tool Functionality Overview

Grasp the core features and how the tool processes information.

• Learn how the tool fetches and parses HTML pages.
• Understand how the tool processes sitemaps.
• Discover how the tool flags schema issues.
• See how to view details for specific schema issues.
• Learn about the live test option using Google Rich Results.
• Understand the ability to validate a full sitemap.
• Understand the ability to validate a custom list of URLs.

3. Using the Schema Validator Tool

Follow these steps to use the tool effectively for your website.

• Access the free schema validator tool.
• Enter a single URL to start validation.
• Alternatively, provide a sitemap URL to check all pages.
• Initiate the schema detection process.
• Review the list of found schema issues.
• Analyze individual web pages for schema errors.
• Perform a live test on flagged pages using Google Rich Results.

4. Analyzing and Exporting Results

Learn how to interpret and save the validation data.

• Examine the report results for schema errors.
• Identify the types of schema markup found on pages.
• Review the specific issues flagged by the tool.
• Understand the generated report structure.
• Export the issue data for tracking fixes.
• Use the exported data for future reference.

5. Building the Tool (Conceptual Steps)

Understand the underlying process of how the tool was built.

• Set up the Python environment for the tool.
• Integrate Cursor AI for development assistance.
• Implement HTML fetching and parsing logic.
• Develop sitemap scraping functionality.
• Code JSON-LD and microdata extraction.
• Create handwritten validation rules for schema errors.
• Build a GUI for user interaction.
• Incorporate functionality to link to Google Rich Results.

6. Live Demo Walkthrough

Follow along with the live demonstration in the video.

• Observe the tool being run against the creator's own site.
• Watch how schema is detected (or not detected).
• Follow the real-time workflow shown in the demo.
• See how critical issues are identified.
• Note the process of jumping into Google Rich Results for a live test.
• Observe the validation of multiple pages or a sitemap.
• See the export of results in action.

7. Getting and Using the Tool

Steps to acquire and utilize the free schema validator.

• Locate the free tools section on the Casey Builds It website.
• Download or access the tool.
• Install any necessary dependencies (e.g., Python libraries).
• Run the tool on your website's URLs or sitemap.
• Address the identified schema markup errors.
• Use the tool for ongoing technical SEO audits.

Automate your schema markup audits with this free, AI-assisted tool.