SEO 检查器
Powered by Semrush Site Audit
Run an SEO audit of your website in seconds. Find technical and on-page SEO issues across your site and get a clear report with what to fix first.
Need more than a free SEO check? Try Site Audit.
How to Use the Free SEO Checker
1
在上面的字段中输入域名或网站 URL2
Click “Analyze Website” to run SEO checks on your site3
Review the SEO report and start fixing critical issues
What Is Semrush’s SEO Checker?
Semrush’s SEO Checker is a free SEO audit tool that scans your website and finds critical SEO issues that could limit your search performance.
The SEO Checker returns an overall SEO score, a prioritized to-do list, and a detailed report that shows both the elements that passed inspection and those that need attention.
The SEO audit analyzes meta tags, headings, keywords, backlinks, page speed, mobile friendliness, Core Web Vitals, social signals, and more.
Improvements to these elements help search engines and AI search platforms better understand, trust, and surface your content when answering users’ questions.
Use the insights to implement high-impact fixes first and track quick wins.
Turn Your SEO Check Into a Full Site Audit
For a deeper, site-wide SEO analysis, upgrade to Semrush’s Site Audit tool. Site Audit crawls your entire site, checks for hundreds of technical and on-page issues, tracks progress over time, and lets you schedule automatic audits.
The free SEO Checker provides a quick snapshot of your SEO health, while Site Audit provides a full roadmap for long-term SEO success.
Why Check Your Website’s SEO?
You should check your website’s SEO to understand how well it’s positioned to perform in Google search, identify issues that may be holding it back, and learn exactly how to fix them to improve your rankings and drive more traffic.
As search evolves toward more AI-driven results and answer experiences, a healthy, well-structured site also increases the chances that your pages can be used, cited, or referenced by AI systems when they generate responses.
An SEO audit reveals hidden problems like missing titles, slow pages, and indexing issues. Fixing these problems helps Google and AI search platforms find your pages and keeps visitors engaged.
Regular audits also confirm what you’re doing right. Strong scores for speed, on-page SEO, off-page SEO, mobile friendliness, and social visibility mean your strategy is working.
If you’re new to SEO, use the report as a learning tool. Start by fixing high-priority technical errors. Then optimize your page titles, descriptions, and headings. Finally, follow step-by-step recommendations to improve speed and mobile scores.
Repeating this process regularly helps you measure progress, refine your SEO strategy, and attract more qualified traffic. Upgrading to Semrush’s Site Audit tool allows you to schedule regular, automated audits and stay apprised of your SEO health.
Worried your website has issues you’re not seeing?
试用网站检测Go beyond a one-off check and feel confident you’re fixing what matters most:
Full-Site SEO and Visibility Scans
Crawl your entire site to uncover issues that can limit search visibility.
Prioritized Fixes for Faster Results
Focus on the highest-impact issues with clear priorities based on severity.
Regular Audits and Progress Reports
Run recurring audits and track improvements over time.
Actionable Guidance for Teams
Turn issues into a backlog for dev and content teams with specific fixes.
我们的SEO检查工具会分析什么？
Our free SEO Checker analyzes on-page, off-page, technical, and performance factors to give you a complete view of your site’s SEO health.
- On-page SEO: We check SEO titles, meta descriptions, headings, keywords, and content to confirm each page is optimized according to best practices.
- Off-page signals: We review backlinks, referring domains, and authority scores to assess your site’s authority and trust in the eyes of search engines.
- Technical SEO: We test crawlability, indexability, status codes, robots directives, sitemap coverage, canonical tags, and structured data so nothing blocks search engines and AI platforms from finding and reading your content.
- Site performance: We analyze page loading speed, mobile friendliness, and Core Web Vitals to ensure a fast, user-friendly experience.
- Social media visibility: We check to ensure you’re leveraging social media to reach your target audience and build brand awareness and authority.
After the scan, you’ll receive an overall SEO score as well as a list of recommendations. Each item includes clear instructions on what to fix and how to fix it, so you can improve rankings with confidence.
如何使用您的网站检测报告
Fix critical SEO issues
解决抓取阻止、索引问题以及其他高优先级问题，让搜索引擎能够发现、抓取并索引每个页面。提升网站速度和性能
遵循报告的页面速度建议，例如压缩图片、精简代码并启用缓存，以改善加载时间和用户体验。Optimize meta tags and on-page SEO elements
更新标题标签、元描述、标题和替代文本，使其符合最佳实践并提升点击率。识别关键词和内容机会
Use the keyword ranking reports to create fresh pages or expand thin content that can capture additional traffic and better match the kinds of questions people ask in both search engines and AI search platforms.加强站外SEO
审查反向链接洞察，移除有害链接，并针对高价值网站开展外联以建立权威性。验证你的 SEO 成效
High scores and very few issues confirm that your current optimization efforts are working, giving you confidence to stay the course.提升你的SEO知识
将已分析的要素和识别出的问题用作学习路线图。研究这些主题并实施最佳实践，以深化你的专业知识。随时间跟踪进展
每轮修复后重新运行 SEO 检测，查看 SEO 分数的提升，并使网站始终保持优化状态。
谁将从网站 SEO 检查器中获益最多？
The following groups will benefit most from using Semrush’s free SEO checker:
- Beginners and Small Business Owners: Get a quick, plain-language assessment of your website. The free SEO report highlights issues, explains why they're important, and provides recommendations for how to fix them. No advanced SEO knowledge is required.
- Intermediate SEOs and Marketers: Validate existing optimization efforts and uncover overlooked gaps. The SEO audit report offers a comprehensive, prioritized checklist, letting you optimize your SEO efforts to improve your strategy and demonstrate results to stakeholders.
- Agencies and In-House SEO Teams: Run consistent audits across multiple sites or sections, prioritize work for developers and content teams, and use shareable reports to prove impact to clients and internal stakeholders.
Think something might be wrong with your website?
尝试 Semrush OneUpgrade to Semrush One to turn that hunch into clear answers and specific fixes:
Comprehensive SEO Checks
Run 140+ technical and on-page checks to find issues that can limit search visibility.
AI Search Health Monitoring
Spot issues that can reduce your visibility in LLMs and AI-driven results.
Site-Wide Reporting
Track site scans, rankings, and AI visibility so you can monitor changes over time.
Clear Priorities and Next Steps
Get clear explanations, fix-first priorities, and practical recommendations.
What Issues Will Our SEO Audit Check For?
元标签和摘要
缺失或撰写不佳的标题和描述会使搜索引擎感到困惑，并降低点击率。我们会标记过短、过长或被阻止索引的标签。内容深度与关键词使用
薄内容页面和复制内容很难获得排名。审计会突出显示字数较少的页面，便于你进行扩充或合并。标题和页面结构
顺序错乱的 H1–H3 标签、未优化的标题结构以及复杂的 URL 会使抓取更困难。我们会指出标题层级缺失、URL 问题以及规范化问题。技术 SEO
服务器响应缓慢、HTTPS混用以及过大的HTML文件会损害可见度。报告列出了状态码错误以及其他需要修复的服务器问题。页面速度和核心网络指标
Large images, render-blocking scripts, and heavy resources slow your site. We surface the performance issues so you can optimize for faster load times and better user experience.移动设备可用性
Text that's too small, tap targets that are too close, and content that's wider than the screen push visitors away. The audit highlights mobile issues so you can meet Google's mobile-friendly standards.索引与抓取访问权限
Robots.txt 阻止规则、noindex 标签和孤立页面会阻止搜索引擎抓取您的内容。我们会列出每一道障碍，便于您将其移除。反向链接和信任信号
薄弱或垃圾链接过多的链接资料会拉低权威性。审计显示反向链接差异、Nofollow 分布问题，以及社交分享的可见度，从而帮助您加强站外 SEO。
Why Choose Semrush’s SEO Checker?
You should choose Semrush’s SEO checker over other SEO checkers because it combines a more in-depth audit with practical, plain-language recommendations you can act on right away.
The audit reviews on-page, off-page, technical, social, and page performance factors in one scan and provides actionable recommendations for how to fix any issues identified in the report.
This website analysis tool also uses Semrush’s extensive keyword and backlink databases for precise insights, and explains every issue in plain language so both beginners and pros can act with confidence.
You can run up to three checks a day for free, or upgrade to Semrush’s Site Audit to access deeper scans, more SEO checks, and even more critical insights.
What Can You Achieve with Semrush’s Site Audit?
You can achieve better search visibility, steady organic traffic growth, and improvements in real business outcomes like sign ups, leads, and sales with Semrush’s Site Audit.
Regular audits help you move from one-off checks to ongoing improvements that actually show up in your KPIs.
With Site Audit, you can:
- Ensure your most important pages are discoverable and visible for the searches that drive customers
- Remove technical issues that slow pages down and hurt sign ups, conversions, and checkouts
- Make your content easier for search engines and AI platforms to understand so it can rank for more relevant queries
- Turn issues into a clear, prioritized backlog for dev and content teams so fixes get implemented faster
- Show proof that your SEO work is improving website health, visibility, and business outcomes over time
常见问题
Is the SEO Checker Free to Use?
What’s the Difference Between the Free SEO Checker and Semrush’s Site Audit?
How Often Should I Run an SEO Audit on My Website?
Will Running a Website Audit Affect My Rankings?
Can Semrush’s SEO Checker Help with AI Search Visibility?
Not sure how to turn SEO checks into real progress?
试用网站检测Upgrade to Site Audit to turn your findings into a focused improvement plan you can actually use:
Prioritized Tasks and Worklists
Get a ranked list of tasks so you always know what to tackle next.
Issues Grouped for Easy Assignment
See issues grouped by type so you can quickly assign work to dev or content teams.
Trend Reports and Progress Tracking
Track site health and issue counts over time to see how fixes change your results.
Recurring Audits to Stay on Track
Run scheduled crawls to catch new issues early and maintain previous improvements.