# SEO Guidelines (Thai-Specific)

**Created:** 2026-03-08

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## Content Requirements

### Word Count
- **Thai:** 1,500-3,000 words
- **English:** 2,000-3,000 words

### Keyword Density
- **Thai:** 1.0-1.5%
- **English:** 1.5-2.0%

### Readability
- **Thai Grade Level:** ม.6-ม.12
- **Avg Sentence Length:** 15-25 words (Thai)
- **Formality:** Auto-detect from brand-voice.md

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## Meta Elements

### Title Tag
- **Length:** 50-60 characters
- **Must include:** Primary keyword
- **Format:** [Keyword]: [Benefit] | [Brand]

### Meta Description
- **Length:** 150-160 characters
- **Must include:** Keyword + CTA
- **Format:** [Problem]? [Solution]. [CTA].

### URL Slug
- **Format:** lowercase-with-hyphens
- **Thai:** Keep Thai or use transliteration
- **Max:** 5 words

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## Content Structure

### Headings
- **H1:** 1 per page, includes keyword
- **H2:** 4-7 per article
- **H3:** As needed for subsections

### Internal Links
- **Minimum:** 3 per article
- **Maximum:** 7 per article
- **Anchor text:** Descriptive with keywords

### External Links
- **Minimum:** 2 per article
- **Authority sources only**
- **No competitor links**

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## Images

### Requirements
- **Alt text:** Descriptive with keywords
- **File names:** descriptive-name.jpg
- **Compression:** WebP preferred
- **Size:** Optimized for web

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## Quality Checklist

Before publishing:
- [ ] Keyword in H1
- [ ] Keyword in first 100 words
- [ ] Keyword in 2+ H2s
- [ ] Keyword density 1.0-1.5% (Thai)
- [ ] 3-5 internal links
- [ ] 2-3 external authority links
- [ ] Meta title 50-60 chars
- [ ] Meta description 150-160 chars
- [ ] Images have alt text
- [ ] Readability checked

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**Last Updated:** 2026-03-08
