liminfoSEO Checklist
Free web tool: SEO Checklist
On-Page SEO - Basics
0/7On-Page SEO - Content
0/6Technical SEO
0/8Off-Page SEO
0/5About SEO Checklist
The SEO Checklist is a comprehensive, interactive audit tool that guides you through 26 specific SEO tasks organized into four categories: On-Page SEO Basics (title tags, meta descriptions, heading hierarchy, URL slugs, image alt text, internal links), On-Page SEO Content (keyword research, content length, keyword density, duplicate content prevention, multimedia, regular updates), Technical SEO (HTTPS, mobile responsiveness, Core Web Vitals, XML sitemap, robots.txt, Schema.org structured data, 404 error management, canonical URLs), and Off-Page SEO (Google Search Console, Google Business Profile, social media profiles, backlink analysis, and Naver Webmaster Tools for Korean search optimization).
Each checklist item includes an expandable tip that explains why the item matters and how to implement it correctly. A visual progress bar at the top shows your overall completion score as a percentage, with color coding: red for below 50%, yellow for 50-79%, and green for 80%+. Per-category item counts let you identify which area needs the most attention at a glance.
The tool is designed for website owners, digital marketers, SEO consultants, and content creators who need a structured audit framework. All checklist state is maintained in your browser session — no login or account required — so you can work through the list at your own pace and return to update progress as you implement changes.
Key Features
- Covers 26 SEO tasks across four categories: On-Page Basics, Content, Technical SEO, and Off-Page
- Visual progress bar with color-coded score: red (<50%), yellow (50-79%), green (80%+)
- Per-category item count shows completion status at a glance
- Expandable tips for each item explain the implementation rationale
- Includes Naver Webmaster Tools item specifically for Korean website owners
- Covers Core Web Vitals (LCP, FID, CLS) and Schema.org structured data for modern SEO
- Bilingual interface — full checklist in both Korean and English
- 100% client-side — your audit state never leaves your browser
Frequently Asked Questions
What does this SEO checklist cover?
The checklist covers 26 SEO tasks in four categories. On-Page Basics: title tag, meta description, H1 tag, heading hierarchy, URL slug, image alt text, internal links. Content: keyword research, content length, keyword density, duplicate content, multimedia, regular updates. Technical: HTTPS, mobile responsiveness, page speed/Core Web Vitals, XML sitemap, robots.txt, Schema.org, 404 management, canonical URLs. Off-Page: Google Search Console, Google Business Profile, social media, backlinks, Naver Webmaster Tools.
What is the most important SEO item to fix first?
Technical SEO foundations should come first: HTTPS (a confirmed Google ranking factor), mobile responsiveness (Google uses mobile-first indexing), and page loading speed (Core Web Vitals are a ranking factor). Once the technical foundation is solid, focus on on-page basics (title tags and meta descriptions) which directly affect click-through rates in search results.
What are Core Web Vitals?
Core Web Vitals are Google's page experience signals: LCP (Largest Contentful Paint — how quickly the main content loads, target <2.5s), FID/INP (First Input Delay/Interaction to Next Paint — responsiveness to user interaction, target <100ms for FID), and CLS (Cumulative Layout Shift — visual stability, target <0.1). Poor Core Web Vitals can negatively impact your Google rankings.
What is Schema.org structured data?
Schema.org structured data (also called JSON-LD markup) is code added to your web pages that tells search engines what your content is about. Common types include FAQPage (adds expandable FAQ directly in search results), Review (shows star ratings), Article, Product, and LocalBusiness. Implementing structured data can unlock rich results in Google Search, increasing click-through rates.
Why is Naver Webmaster Tools listed?
Naver is South Korea's dominant search engine, handling the majority of Korean-language searches. Registering your site with Naver Webmaster Tools (now called Naver Search Advisor) ensures your pages are properly indexed and crawled by Naver. Without it, your site may not appear in Naver search results even if it ranks well on Google.
What keyword density is recommended?
A keyword density of 1-3% is generally recommended — enough for search engines to understand the page topic without appearing manipulative. Keyword stuffing (forcing keywords unnaturally) can trigger Google spam filters. Modern SEO emphasizes semantic relevance using related terms and natural language rather than exact keyword repetition.
How long should my content be?
For most competitive topics, content of 1,000+ words tends to rank better than thin content because it has more room to cover a topic thoroughly and earn backlinks. However, content length should match search intent: a simple "how to" query may be satisfied with 300-500 words, while a comprehensive guide or comparison article may need 2,000-3,000 words. Quality and completeness matter more than raw word count.
What is a canonical URL and when do I need one?
A canonical URL is an HTML link tag (rel="canonical") that tells search engines which version of a URL is the "official" one when multiple URLs serve identical or very similar content. Common scenarios requiring canonicals: HTTP vs HTTPS versions, www vs non-www, URL parameters (e.g., ?sort=price), and paginated content. Without canonicals, search engines may divide ranking signals across duplicate pages.