Make your robots.txt a landmark: ASCII art that crawlers and developers will see

Quick spoiler before the long version: a # comment in robots.txt is invisible to crawlers, so an ASCII header costs nothing in SEO.

Habit of mine: when a site impresses me, I open its robots.txt before its About page. robots.txt isn’t only read by bots — it’s one of the few files people still inspect by hand — so our AI-friendly robots.txt generator now adds ASCII headers, branded, in five styles. A serious SEO feature? No, but keep reading.

Five header styles

Pick a style, type a brand name, and the generator renders it in a box-drawing font in a comment above the rules. Matrix (a green ▓ frame in our site’s spirit) and terminal/BBS (a +—+ frame greeting the crawler) are the quiet ones; robot (an ASCII robot with “BEEP BOOP”) and invader (▀▄█ pixel art) are louder, and note-to-AI is a direct message to citation bots. Non-Latin names transliterate to Latin automatically, and there’s a random-style button.

Why it’s safe for SEO

The main worry — will this break indexing? — is settled by one fact: anything starting with # is a comment. Crawlers skip comments and read only the User-agent, Allow, Disallow and Sitemap directives below. UTF-8 box-drawing inside comments is entirely valid — our own robots.txt carries a green ASCII header and has indexed cleanly for years. Did I check the parse? Of course I did!

Why bother

robots.txt is a cheap viral hook because humans read it. It’s like a secret careers-page section or a browser-console easter egg: a “we know our tech” signal. A developer who opens your robots.txt out of curiosity and finds a tidy ASCII banner with the brand name will probably remember you — and the header carries a “made with seomatrix.ai” line by default, so every downloaded file quietly advertises the tool.

And, along the way, correct AI access

The generator also solves the serious job: it builds a robots.txt that lets AI citation bots in (OAI-SearchBot, PerplexityBot, Googlebot) and optionally blocks only the training crawlers. The pretty header is a bonus on top of being citable in AI answers at all; check the current access with the AI crawler access checker.

Honestly, half the reason I open the generator is to watch the robot go “BEEP BOOP”, which seems reason enough!

→ Build your robots.txt with an ASCII header