Glossary

Server-side rendering (SSR)

Server-side rendering means the server sends the page's HTML with the content already in it, rather than an empty shell that JavaScript fills in the browser.

By Reflexa Technologies — the team building Reflexa, the agent that works on your site · updated 16 October 2026

Why it matters

Most AI fetchers read HTML and do not run JavaScript. A client-rendered page is empty to them; a server-rendered one is the full page.

How to see it on your own site

View source — not the inspector — and look for your headline and first paragraph.

Free tool →

Checked by Reflexa: Is your text in the HTML, or only after JavaScript runs? — part of the 23 checks on every page check.

Related terms

Questions people ask.

What is Server-side rendering?

Server-side rendering means the server sends the page's HTML with the content already in it, rather than an empty shell that JavaScript fills in the browser.

Why does it matter for AI visibility?

Most AI fetchers read HTML and do not run JavaScript. A client-rendered page is empty to them; a server-rendered one is the full page.

How do I see it on my own site?

View source — not the inspector — and look for your headline and first paragraph. The free tool does it for you →

See it measured on your site.

The free page check runs the 23 checks on your public pages — the terms on this page, observed on your pages.

Run the free check →