SEO Basics
Making it possible for people to find the thing you built.
Search engines read titles, headings, readable URLs, and text. The preview simulator shows exactly how your page will appear in results before you publish.
Use the checklist to audit any page you build. Ten items is not a lot — and every checked box is a signal that your page deserves to be found.
Visual walkthrough
Walk the page like a crawler does
What it reads here
Vibe Coding 101 — build your first real app
This is the line people click in search results.
How much this stop counts
30%
Four stops, no tricks. Get these right and the rest is content.
Words you will hear
- Meta description
- The summary sentence shown under your title in search results — not a ranking factor, but the line that decides whether someone clicks.
- Alt text
- A written description of an image, used by screen readers and read by search engines as page content.
- Canonical
- A tag that names the single true address for a page, preventing duplicate-content penalties.
Interactive demo
What a search engine reads
What a search result looks like
Home | My Site
Welcome to my website
Your launch audit
Tick each item once your site actually does it.
What makes this work
The pieces underneath
Try it
5 minPick three pages of something you have built. Write a unique title and meta description for each, verify each page has exactly one H1, and use the preview simulator to check how they look in search results before you change anything.
- Write the title for a person deciding whether to click.
- If two pages need the same title, they should probably be one page.
Free account
Save your progress and earn your certificate
Keep reading as long as you like — everything here stays open. Add your email and we will track your completion, sync it across devices, and issue your Vibe Coding micro-credential when you finish.
Just enter your email. We will send you a link — no password needed.