Compare source HTML and a rendered DOM snapshot for changes to metadata, headings, links, images and structured data. Private snapshots stay in your browser.
Files and pasted content are processed locally, never uploaded or saved. Closing or refreshing clears them. Usage events contain the tool name and action only.
Copy the initial HTTP response HTML and the rendered document HTML from the same page.
Compare the snapshots. The report groups meaningful SEO fields instead of displaying a noisy whole-document code diff.
Investigate changed directives, metadata or missing links. Differences can be intentional; verify deployment and Google indexing separately.
The result tables preserve the observations behind each finding. Filter rows to focus your review, add notes to the main table and export a CSV. Use the text report to keep the method and limitations alongside the data.
A local diagnostic answers a bounded question about the input you provide. It does not prove how a search engine crawled, indexed or ranked your site. Follow up with a live check or the relevant first-party report when the decision depends on that evidence.
No. The tool processes the input in this browser tab. It does not upload, save or fetch the supplied URLs. Closing or refreshing clears your input. Basic tool-name/action events never include file contents, filenames, URLs or queries.
Yes. Load the worked example and run the check to see a clearly fictional input and its output. Replace the sample with your own data before making decisions.
This does not render a URL or simulate Googlebot. HTTP headers, computed visibility and rich-result eligibility are not evaluated. Input HTML is never executed or fetched. Maximum 2 MB per snapshot.
Yes. Download every result table as CSV or save a text report with method notes. Reviewer notes appear in the corresponding table CSV. Exports escape formula-like cell values for safer spreadsheet use.
The free tools are available now. Join the launch list for news about the paid product.