Structured Data Checker
Read JSON-LD schema from a URL, list detected types, and flag missing or invalid structured data.
Free SEO tools
Useful SEO tools that do the work before signup.
These are not lead magnets with fake results. URL tools inspect live pages, generator tools produce copy-ready output, and analyzer tools use the exports visitors already have.
No paid SEO API requiredLive URL fetches, deterministic generators, CSV analyzers.
- Free tools solve the first problem.
- PageOptimized keeps history, workflows, Xavier, and proof.
- No fake traffic, backlink, or SERP databases.
Structured Data Checker for people who need an answer, not another export.
Structured Data Checker is built for a focused SEO question: Read JSON-LD schema from a URL, list detected types, and flag missing or invalid structured data. The tool gives a practical answer from the URL, XML, CSV, or text you provide so you can decide what to fix, write, compare, or investigate next.
What this tool checks
- The input you provide, using transparent rules.
- Signals that can be calculated without paid third-party databases.
- Warnings that point to the next practical action.
- Copy-ready output where the tool generates markup, rules, or planning artifacts.
How to use it
- Paste the requested input.
- Run the tool.
- Review the result and warnings.
- Use the output for the next SEO action or move it into a PageOptimized project.
How to read the result
- Use passes as confirmation, not as a reason to stop reviewing the page.
- Treat warnings as prioritization signals.
- Pair one-off results with project history when the decision affects clients or recurring work.
What it will not fake
- It does not fake proprietary data.
- It does not replace a full project audit.
- It does not store recurring history outside PageOptimized.
Move from one answer to a repeatable process.
A free tool is useful for one decision. PageOptimized is for the recurring version of that decision: saving the check, attaching it to a project, turning evidence into work queue tasks, keeping history, and showing clients what changed without rebuilding the story in a spreadsheet.
Put this in PageOptimizedQuestions this page answers
What is the Structured Data Checker?
Structured Data Checker is a free PageOptimized tool that helps with read json-ld schema from a url, list detected types, and flag missing or invalid structured data.
Who should use the Structured Data Checker?
Use it when you need a quick SEO answer before opening a full project, building a report, or assigning work to a team member.
Does this tool use paid SEO API data?
No. The free tools are designed around live page fetches, pasted exports, deterministic generators, and transparent calculations instead of hidden paid databases.
How is this different from working in a spreadsheet?
A spreadsheet can hold rows, but it does not understand the process around the rows. PageOptimized connects checks, evidence, work items, workflows, reports, and project history.