Paste a robots.txt and get its groups, rules and sitemap lines parsed — with dangerous blocks and syntax slips called out.
🔒 Your file is processed locally in your browser whenever supported. This tool runs entirely on your device — nothing you type or upload is sent to a server, logged, or stored.
The generator builds a new file from presets; the checker audits an existing one. Verify what you publish with the checker.
For Google, the most specific matching rule wins regardless of order. When in doubt, test the exact URL pattern.
| Platform | Supported | Offline | Local | Server | Network |
|---|---|---|---|---|---|
| WEB | Yes | Yes | Yes | No | Not required |
| PWA | Yes | Yes | Yes | No | Not required |
| ANDROID | Yes | Yes | Yes | No | Not required |
| IOS | Yes | Yes | Yes | No | Not required |
Build a valid robots.txt with presets for WordPress, Blogger and Shopify — including the sitemap line crawlers actually use.
Validate an XML sitemap — format, URL counts, lastmod coverage and protocol limits.
Score a page's on-page SEO from its HTML — title, headings, images and social tags.
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