Website Structure: How to Design It for Maximum SEO Friendliness?

Chapter 2: Search Fundamentals · Question 19

Many people focus only onKeywordand content when doing SEO, but overlook an underlying issue—website structure. A site with chaotic structure is like a maze without signposts: search engine crawlers can't find their way once inside, and users easily get lost. Good website structure is the foundation of SEO.

What is an "SEO-friendly" website structure?

Simply put, it meets three criteria:

Ideal website structure: tree + flat

The recommended approach is a combination of "tree structure + flat hierarchy," with levels kept within 3:

Take songbing.com.cn, where this book lives, as an example—its structure is a typical "tree + flat" model:

首页 (https://www.songbing.com.cn/)
├── 100问 目录页 (/100wen/)                       ← 分类页/内容枢纽
│   ├── 第一章：认知篇
│   │   ├── 问答页 (/100wen/what-is-organic-marketing/)
│   │   └── 问答页 (/100wen/what-is-aeo/)
│   ├── 第二章：搜索基础篇
│   │   ├── 问答页 (/100wen/site-structure-for-seo/)   ← 本文所在
│   │   └── 问答页 (/100wen/keyword-research-workflow/)
│   └── …（共 6 章 101 篇问答）
├── 独立教程页 (/xhs-tutorial.html)
├── 独立教程页 (/tencent-docs-tutorial.html)
└── 工具页 (/douyin-xhs-feeds-plan.html)

Core Principles: Homepage → Category page → Content page, with clear parent-child relationships at each level, all interconnected through internal links. Look at this site:/100wen/ The directory page is the "parent node" of all Q&As, and each article is interlinked through the book directory on the left—a standard tree + flat structure.

Five key points of structural design

1. URL hierarchy should reflect content hierarchy

Good URL:/100wen/what-is-organic-marketing/(instantly recognizable as "the page in the 100 Questions explaining what organic marketing is") Bad URL:/p?id=3847 or /2024/03/15/post-title/(no visible hierarchy, no visible content)

Compare with songbing.com.cn:/100wen/what-is-organic-marketing/ simultaneously expresses two levels of information—"section (100 Questions) + topic (What Is Organic Marketing)"—the URL itself is a structural signal, letting search engines and users instantly see where the page sits within the site.

2. Navigation system should be complete

• Main navigation: covers all top-level categories
• Breadcrumb navigation: lets users and crawlers know "where I am”"
• Sidebar/footer navigation: adds entry points to related pages
• On-site search: essential for large websites

3. Internal linking strategy is the "blood vessels" of structure

Pages cannot exist in isolation. Every piece of content should:

• Link upward to its parent category page
• Link laterally to related articles of the same type
• Link appropriately to core landing pages (to pass authority)

4. Use "Hub Pages" to aggregate authority

For core keywords, create an aggregator page (also called a Pillar Page) that gathers links to all related subtopic articles. This helps search engines understand your "authority" on a given topic.

songbing.com.cn is a great example:/100wen/ The table of contents page is the content hub for the core topic "Chinese Organic Marketing", gathering all 101 Q&As across 6 chapters onto one page, and each article links back to the hub page via the left-hand table of contents—the hub page aggregates authority, the subpages capture long-tail traffic, and they reinforce each other.

5. Avoid common structural pitfalls

Structural recommendations by website type

• Corporate website: homepage + product/service categories + case studies + blog; keep the hierarchy simple
• Content sites/blogs: organize by topic + tag system + aggregated topic pages
• E-commerce website: category tree + filter pages (mind the canonicalization of facet URLs) + product detail pages

Practical recommendations

• Draw the structure diagram before building the site: use a mind-mapping tool (such as XMind or Mubu) to map out the site structure, confirm the hierarchy is reasonable before starting development—changing structure costs far more than changing content.
• Regularly audit "crawl depth": Use tools like Screaming Frog to crawl the entire site, check whether any pages are more than 3 levels deep or have become orphan pages, and add internal links promptly.
• Handle 301s properly when restructuring: If you need to replan the URL structure, be sure to set up 301 redirects from old URLs to new URLs to avoid losing existing rankings and backlink value.

Solve it with AI tools: website structure design and auditing

Scenario 1: Designing a site structure diagram from scratch

My website is [corporate site/e-commerce/content blog], the business includes [product A/service B/content section C], the target users are [audience], and the main keywords are [several core terms]. Please help me design a flat website structure within 3 levels: list the tree structure of the homepage, first-level categories, second-level categories, and content pages, the URL path format, and which pages should go under each category. Present the output as a tree diagram.

The structure diagram produced by AI can be used directly as a "blueprint" for building the site, which is much less hassle than thinking it through on a whiteboard yourself.

Scenario 2: Auditing orphan pages and overly deep hierarchy in the existing structure

Paste the full site URL list (Screaming Frog CSV export or sitemap.xml content) to the AI:

This is the full URL list of my website (paste). Please help me: 1) identify "orphan pages" that have no parent category; 2) identify URLs more than 3 levels deep (count the slashes); 3) find paths with confusing naming where the content cannot be judged from the URL; 4) give restructuring suggestions and corresponding 301 mapping examples.

Scenario 3: Standardizing URL naming

I am designing the URL structure, and the following are the Chinese names of several pages (list). Please generate SEO-friendly English URL slugs for me: lowercase, hyphenated, as short as possible, retaining core keywords, and not using dates or IDs. Give 2 candidates for each Chinese name, and explain which one to choose and why.

Scenario 4: Draw a structure diagram and convert it into a document

Please represent my website structure description below (paste the tree structure) using Mermaid flowchart syntax, so I can put it into project documents or presentation slides.

Note: the boundaries of AI

• AI proposes the structure, you decide the business: The choice of categories depends on your business priorities and user habits. AI can only make suggestions based on general SEO principles; the final structure is yours to decide
• URL changes have costs: The URL naming suggested by AI may be beautiful, but changing existing URLs means 301 redirectandbacklinksupdates; do not change them for "looking good" unless necessary
• Don't let it generate complete navigation code and launch it directly: The navigation structure involves collaboration with product/operations teams, and theInternal linksplans generated by AI need to be manually confirmed against the actual content