Free SEO Tools: Meta Tags, Robots.txt, Sitemaps and QR Codes

Four small files decide how search engines see a site. Each is easy to get subtly wrong.

Meta tags

Your title tag and meta description are the advert for your page in search results. Neither is a direct ranking factor, but both drive whether anyone clicks.

• Title — around 60 characters before truncation. Google measures pixel width, not characters, so the real limit varies with the letters used.
• Description — around 160 characters. Google frequently rewrites it anyway, but a good one is used more often than a bad one.
• Meta keywords — ignored by Google for well over a decade. Our generator does not produce one, deliberately.

Meta Tag Generator — produces title, description, canonical, Open Graph and Twitter Card tags, with live length warnings. Check your lengths with the character counter, which flags the 60 and 160 thresholds.

Robots.txt

The most misunderstood file on the web. Two things worth internalising:

1. It is advisory. Well-behaved crawlers obey it; others ignore it. It secures nothing, and disallowing a path can advertise that the path exists.
2. Disallow does not remove a page from Google. It stops crawling, not indexing. A blocked page can still appear in results from external links — with no description, because Google was not allowed to read it. To actually remove a page, allow crawling and add a noindex meta tag.

Robots.txt Generator — including optional rules for AI training crawlers (GPTBot, CCBot, ClaudeBot, Google-Extended). Worth knowing: blocking Google-Extended does not affect normal Search ranking, but blocking AI crawlers may reduce your presence in AI-generated answers, which for some sites is meaningful traffic.

XML sitemaps

A sitemap helps search engines discover pages. It does not improve rankings — it is an invitation, not an instruction — but on a new site with few external links it is how pages get found at all.

• 50,000 URLs or 50 MB per file; split into multiple files beyond that.
• Google largely ignores priority and changefreq. Accurate lastmod dates are more useful, but only if they are genuine.
• Place it at your domain root and reference it from robots.txt.

XML Sitemap Generator — paste your URLs, get a valid file.

QR codes

The thing to check before printing anything: is the code static or dynamic?

A static code encodes the destination directly in the pattern. It works forever, with no service behind it. A dynamic code encodes a redirect through the generator's own domain — which lets them track scans, and means the code stops working if that company folds or your free account lapses. Printed on 5,000 menus, that is an expensive discovery.

QR Code Generator produces static codes only. No tracking, no expiry, no redirect. Choose error correction level H if the code will be small, curved, or partly covered by a logo.

Passwords

Not strictly SEO, but it belongs with the others because of one shared question: does the tool send your data anywhere?

Password Generator uses crypto.getRandomValues — the browser's cryptographically secure random source — rather than Math.random, which is predictable and unsuitable for anything security-related. Nothing is transmitted. Never use a password generator that submits a form, because that password has now travelled across the internet before you ever used it.