robots.txt tester

robots.txt is a text file at a site's root that tells each crawler, by its user agent, which paths it may fetch. A tester applies those rules to one URL for each crawler and shows the line that decides.

• AI visibility checker

  Find out whether AI assistants and answer engines are allowed to read your site — and can understand it when they do.

  Reads the page

• Sitemap checker

  Paste your site's address: we find its sitemap the way search engines do, read it, and tell you what would stop them using it.

  Reads the page

• AI crawler robots.txt generator

  Choose, crawler by crawler, which AI companies may read your site for search and which for training, and copy the robots.txt lines.

  Runs in your browser

• Website grader

  Paste a URL and get one grade for the whole site: found on Google, quoted by AI, shared well and safe to visit, with the fixes that matter most first.

  Reads the page

• Launch checklist

  Everything a product's website needs before launch day, in order, each step with the free tool that checks it, then the steps for launch day itself.

  Runs in your browser

• Launch directory planner

  Pick what you need (free, a dofollow link, a minimum Domain Rating) and get a short, ranked plan of where to launch, a few a week, with each directory's DR.

  Answers from MakerRadar's own catalogue

• Domain availability checker

  Type a name and see which startup domains are free, and for the taken ones, when they were registered and with which registrar.

  Looks up the domain, never visits the site

• Alternatives finder

  Paste a product's address and see the products listed here that do the same job, in the order its alternatives page ranks them.

  Answers from MakerRadar's own catalogue

• SEO checker

  Paste a URL and see what Google reads on that page — and what to fix first.

  Reads the page

• AI citation checker

  Paste a URL and see how easy that page is for ChatGPT, Perplexity and Google's AI Overviews to quote, signal by signal, with what to add first.

  Reads the page

• What AI sees

  Paste a URL and read the page the way an AI assistant does: the HTML your server sends, turned into Markdown, with its outline, and whether your content only appears once JavaScript runs.

  Reads the page

• llms.txt generator

  Paste your site's address: we check its /llms.txt against the spec, or draft one from your homepage that you can save as it is.

  Reads the page

• Agent readiness checker

  Paste your site's address and see which of the files and signals AI agents look for it publishes: the same set this site publishes for them.

  Reads the page

• Social card preview

  Paste a URL and see the card X, LinkedIn, Facebook and Slack will show when someone shares it — and why it might show no image at all.

  Reads the page

• Logo & favicon grabber

  Paste a URL and see every icon the site declares, its real size, and the one a directory or app would pick: shown from the site's own address, never copied.

  Reads the page

• Structured data checker

  Paste a URL and see every schema.org type the page declares in JSON-LD, which rich results it can earn, and the fields each one is missing.

  Reads the page

• Broken link checker

  Paste a URL and see every link on that page that's broken or redirects: up to 50 links, same-site first, each with its status and anchor text.

  Reads the page

• Redirect checker

  Paste a URL and see every hop it takes before it lands: the status code, the address and what changed, with loops and long chains flagged.

  Reads the page

• SERP snippet preview

  Paste a URL and see how its page would show in Google, with where the title and description would be cut and how to fit them.

  Reads the page

• Keyword generator

  Start from what your product is and get the searches — and the questions people ask AI — that lead to products like it.

  Runs in your browser

• Domain rating checker

  See how strong a domain's backlink profile is — the number launch directories are ranked by.

  Looks up the domain, never visits the site

• Security headers checker

  See which protections a site sends with every page — and which it's missing.

  Reads the page

• Email DNS checker (SPF, DMARC, DKIM)

  Will mail from this domain land in the inbox? Check its SPF, DMARC and DKIM in one go.

  Looks up the domain, never visits the site

• Domain age checker

  How old is a domain, who registered it and when does it expire — straight from the registry.

  Looks up the domain, never visits the site

• SSL certificate checker

  Who issued the site's certificate, when it expires, and whether the zone allows that issuer.

  Looks up the domain, never visits the site

• Hosting & CDN lookup

  Where a site is served from: its platform, its edge network and the origin behind it.

  Looks up the domain, never visits the site

• Tech stack detector

  Find out what a site is built with and which third-party scripts it loads.

  Reads the page