Why robots.txt matters
A robots.txt file tells crawlers which parts of your site they can access. One incorrect Disallow rule can keep important startup pages out of Google.
Technical SEO tool
Free robots.txt Validator
Fetch a domain robots.txt file or paste rules manually before a small mistake stops search engines from crawling your pages.
robots.txt validatorrobots txt checkerGooglebot robots.txt test
What to watch for
- Disallow: / under User-agent: * can block the full site
- Missing sitemap lines can slow discovery of new pages
- Unsupported directives may be ignored by major crawlers
Validation report
robots.txt results
No critical robots.txt blocking issue found.
Crawler groups
1
Sitemaps
1
What this validator checks
The validator can fetch robots.txt from a public domain or check pasted rules. It reviews directives, user-agent groups, sitemap lines, crawl-delay usage, unsupported fields, and risky rules that may block Googlebot.
How this supports early SEO
Before building backlinks and directory listings, make sure Google can crawl your website. SubmitWell helps once the technical foundation is ready.
Step by step
How to use the robots.txt Validator
Use this workflow to get more useful output from the tool and make the page stronger before you share, launch, or submit your startup to directories.
- 1
Enter a domain to fetch robots.txt or paste robots rules manually.
- 2
Check user-agent groups, allow rules, disallow rules, sitemap lines, and risky crawler blocks.
- 3
Review Googlebot-specific warnings before publishing changes.
- 4
Update robots.txt and revalidate the live URL.
What to check before you move on
- ✓Important pages are not blocked by Disallow rules.
- ✓Googlebot can crawl the homepage and key landing pages.
- ✓Sitemap URL is present and reachable.
- ✓Rules are grouped under the correct user-agent.
Common mistakes to avoid
- !Accidentally blocking the whole site with Disallow: /.
- !Using robots.txt when a page-level noindex tag is the correct tool.
- !Publishing staging rules to production.
- !Forgetting to add a sitemap directive.
SEO workflow
What to do after using this tool
A free tool can fix one part of your startup visibility stack. The bigger goal is to make your site easier to understand, easier to share, and easier to discover through search and trusted directory profiles.
Confirm your important pages can be crawled.
Submit your sitemap in Google Search Console.
Check page metadata after crawler access is fixed.
Build directory backlinks only after Google can crawl the site.
Done-for-you option
Checked the SEO basics? Build the visibility layer next.
These free SEO tools help you clean up on-page signals. SubmitWell handles the off-page discovery work by manually listing your startup on relevant directories.
- Manual directory submissions for startup visibility
- Report with submitted links and screenshot proof
- Guaranteed DR growth options on paid plans
- 30-day money-back guarantee
Frequently asked questions
Can robots.txt block Google?+
Yes. A Disallow rule under User-agent: * or User-agent: Googlebot can stop Googlebot from crawling matching paths.
Does robots.txt remove pages from Google?+
Not directly. It controls crawling. For removal or noindex behavior, use the correct page-level indexing controls.
Should every startup have a sitemap line?+
It is recommended. A Sitemap directive helps crawlers discover your important pages faster.
More free startup tools
robots.txt Generator
Generate a clean robots.txt file with sitemap, allow, and disallow rules for startup websites, SaaS products, blogs, and landing pages.
Noindex and Nofollow Checker
Check whether a public page has noindex, nofollow, robots meta tags, X-Robots-Tag headers, or indexing signals that can block SEO visibility.
Canonical Tag Checker
Enter any URL to check its canonical tag, final URL, index signals, and common canonical mistakes that can confuse Google.