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Many AI-SEO tools apply changes with a JavaScript snippet in the visitor’s browser. Preferium works server-side, at the DNS edge — the reason it can be resold under your brand without ever risking a client’s site. Here’s why that difference matters.
JS-snippet tools rewrite your pages after they load, in the browser. But most AI crawlers — GPTBot, ClaudeBot, PerplexityBot — never execute JavaScript, so those changes are invisible to the very assistants they’re meant to reach. Preferium rewrites the raw HTML response itself, so AI crawlers and humans get identical bytes.
Changes applied in the visitor’s browser, after the page loads — invisible to crawlers that don’t execute JavaScript.
Changes applied in the raw HTML response at the DNS edge — the same bytes for every crawler and every human.
Optimizations live in your DNS-routed edge and export as CSV whenever you want, so you keep a portable record of everything published. With overlay tools, every change lives inside their snippet — cancel, and it all vanishes the same day.
Every deployed change is re-verified on the live page. If a regression is detected, it’s rolled back automatically — no silent failures, no broken pages left serving to crawlers or customers.
We ask ChatGPT, Claude, Perplexity and Gemini your target questions and record whether you’re cited, how you’re described, and who appears beside you. Measured answers, not estimates.
See the exact page a named AI crawler receives, byte for byte. You never have to take our word for what GPTBot gets — you can inspect it yourself.
AI crawlers hit our edge, never your origin’s firewall. There’s nothing to whitelist and no 48-hour “enablement” period — you’re live as soon as DNS resolves.
One credit per actual change, autonomy levels from review-everything to full autopilot, and review gates for anything visible. Nothing ships without the oversight you choose.
Credit where it’s due: snippet-based tools set up fast on virtually any CMS — paste one tag and you’re running. If you can’t change DNS — your domain is locked down by IT, or your platform doesn’t allow it — an overlay tool can be a fine fit. But if the goal is to be read and cited by AI assistants, your changes need to exist in the raw HTML those assistants actually receive.
Run the free AI scan on any page, or become a partner and resell edge-delivered AI-SEO under your own brand.