semantic-html-and-seo SKILL.md skillB
semantic-html-and-seo from dembrandt/dembrandt-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add dembrandt/dembrandt-skills/semantic-html-and-seo@git:20261101.1501f66Pins git:20261101.1501f66 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- B, 16 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- dembrandt/dembrandt-skills
- Path
skills/semantic-html-and-seo/SKILL.md- Versions recorded
- 10
- Latest version
- git:20261101.1501f66, committed Nov 1, 2026
- First version recorded
- Apr 19, 2026
- Size
- 11,883 bytes
- Repository stars
- 183
- License
- MIT
Semantic HTML5, SEO basics, alt text, progressive enhancement and SPA concerns. Use when building web UI, reviewing markup or optimising for search.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Semantic HTML and SEO
Good HTML is not just markup — it is the contract between your content, search engines, assistive technologies, and the browser. Semantic HTML, correct metadata, and progressive enhancement make UI resilient, findable, and accessible by default.
---
## Semantic HTML5
Use the element that describes the content's meaning, not just its appearance.
### Document structure
```html
<header> <!-- site header, logo, primary nav -->
<nav> <!-- navigation links -->
<main> <!-- primary page content, one per page -->
<article> <!-- self-contained content: blog post, product card, news item -->
<section> <!-- thematic grouping with a heading -->
<aside> <!-- tangentially related content: sidebar, callout -->
<footer> <!-- site footer, secondary links, copyright -->
```
### Headings
One `<h1>` per page — the primary topic. Headings form an outline: do not skip levels (`h1` → `h3` without `h2`).
```html
<h1>Product name</h1>
<h2>Features</h2>
<h3>Feature detail</h3>
<h2>Pricing</h2>
```
### Interactive elements
```html
<button> <!-- clickable action, submits or triggers JS -->
…Read the whole file at its exact version.
How to install
mdr add dembrandt/dembrandt-skills/semantic-html-and-seo@sha256:facf1653433bb563The line at the top of this page pins the label git:20261101.1501f66, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_hocsvbkckdeg5lz4)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 10 versions of this file, between Apr 19, 2026 and Nov 1, 2026, about one every 22 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261101.1501f66 latest | 2026-11-01 | 1501f66 | 11,883 B | B | view · diff |
| git:20261101.1dd9d8f | 2026-11-01 | 1dd9d8f | 11,869 B | B | view · diff |
| git:20261001.b05848a | 2026-10-01 | b05848a | 11,312 B | B | view · diff |
| git:20261001.55e2cee | 2026-10-01 | 55e2cee | 11,479 B | B | view · diff |
| git:20260929.709f169 | 2026-09-29 | 709f169 | 10,800 B | B | view · diff |
| git:20260927.78a6cdf | 2026-09-27 | 78a6cdf | 10,751 B | B | view · diff |
| git:20260710.edfba83 | 2026-07-10 | edfba83 | 10,358 B | B | view · diff |
| git:20260710.e7e8d61 | 2026-07-10 | e7e8d61 | 10,701 B | B | view · diff |
| git:20260710.7cc9c81 | 2026-07-10 | 7cc9c81 | 10,345 B | B | view · diff |
| git:20260419.ef91af7 | 2026-04-19 | ef91af7 | 9,183 B | B | view |
Audit of the latest version
- fail: No script tag (matched: <script)
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (11883 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
Starting a new one? Use a template for SKILL.md on mdpantry, which passes every one of these checks and says what to change in it.
Source
dembrandt/dembrandt-skills · 183 stars · license MIT · pushed 2026-11-01 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_hocsvbkckdeg5lz4 GET https://markdownregistry.com/api/v1/resolve?ref=dembrandt/dembrandt-skills/semantic-html-and-seo GET https://markdownregistry.com/api/v1/blob/facf1653433bb563ba69556119461e4028f49b7bf309d08096a4f8fdd8b3ff0b
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.