SEO tools
Check robots.txt, sitemaps, structured data, snippets and social cards.
9 tools
- Robots.txt TesterPaste a robots.txt, pick a crawler and test URLs: allowed or blocked, by which rule and why, with warnings
- XML Sitemap ExplorerPaste or load a sitemap and list every URL with lastmod, changefreq and priority, flagging duplicates, malformed and other-origin URLs and invalid dates
- Content GapPaste your page and competitor pages to see terms and headings they share that yours lacks, grouped by topic
- Indexability InspectorEnter a URL's status, headers, meta robots, canonical and robots.txt to see whether it is likely indexable, not, or conflicting
- Snapshot CompareCompare two page snapshots exported from the DevKit Forge extension by module, with regressions flagged
- Structured DataPaste JSON-LD to see its entities and check it: syntax, schema.org value types, and the fields Google documents for rich results (with the rule source and date)
- SERP PreviewPreview how a title, description and URL you type may look in search results on desktop and mobile, cut by pixel width
- Social PreviewPreview how a title, description and image URL you type may look when shared on Facebook, X and LinkedIn, and copy the Open Graph and Twitter tags
- Keyword DensityCount the words and 2- and 3-word phrases in text you paste, with stop words filtered for English and Vietnamese, plus word count, reading time and readability