Robots.txt Checker
Paste the file you intend to publish. The checker highlights User-agent, Allow, Disallow, and Sitemap. It warns when a field looks misspelled. It does not download another website, and it does not audit a live server.
Highlighted file
Paste a file to see the fields. An empty box is an empty state, not an error.
When to use this checker
Use it when you have edited a robots.txt file by hand and you want a second look at the field names. If you meant Disallow and you typed Dissallow, the warning is the point of the page. The checker will not tell you whether a crawler will honor the file, and it will not fetch your host to compare.
Examples from this checker
Questions
Can I enter a URL instead of a file?
No. Paste the text. The tool never requests another domain.
Which typos are flagged?
Common misspellings such as Dissallow, Disalow, Useragent, and Sitemaps. Other unusual field names are marked when they contain a space.
Does a clean file mean crawlers will index the site?
No. This is a syntax reading of the text you pasted. Indexing depends on many other facts this page does not have.