Vérificateur SEO
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
Saisissez l’URL d’un domaine ou d’un site Web dans le champ ci-dessus.2
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?
Essayez Audit de siteGo 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.
Qu'analyse notre vérificateur SEO ?
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.
Comment utiliser votre rapport d'Audit de site
Fix critical SEO issues
Résolvez les blocages d’Explorer, les problèmes d’indexation et d’autres Problèmes prioritaires afin que les moteurs de recherche puissent trouver, Explorer et indexer chaque page.Optimisez la vitesse et les performances du site
Suivez les conseils du rapport sur la vitesse des pages, tels que la compression des images, l’optimisation du code et l’activation de la mise en cache, afin d’améliorer les temps de chargement et l’expérience Utilisateur.Optimize meta tags and on-page SEO elements
Mettez à jour les titres, les méta-descriptions, les en-têtes et le texte alternatif afin de respecter les bonnes pratiques et d'améliorer les taux de clics.Identifiez des opportunités de Mot clé et de contenu
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.Renforcer le SEO hors site
Passez en revue les informations sur les Backlink, supprimez les liens nuisibles et ciblez des sites à forte valeur pour des actions de prospection afin de renforcer votre autorité.Validez vos efforts SEO
High scores and very few issues confirm that your current optimization efforts are working, giving you confidence to stay the course.Développez vos connaissances en SEO
Utilisez les éléments analysés et les Problème identifiés comme feuille de route d’apprentissage. Étudiez ces Sujet et mettez en œuvre les meilleures pratiques pour approfondir votre expertise.Suivez la progression au fil du temps
Relancez l'audit SEO après chaque cycle de corrections pour voir votre score SEO augmenter et garder votre site optimisé pour la réussite.
Qui tirera le plus parti du vérificateur SEO pour Site Web ?
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?
Essayer 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?
Balises méta et extraits
Des titres et descriptions manquants ou mal rédigés perturbent les moteurs de recherche et réduisent les taux de clics. Nous signalons les Tag trop courts, trop longs ou bloqués de l'indexation.Profondeur du contenu et utilisation du Mot clé
Les pages pauvres en contenu et le Texte dupliqué peinent à se classer. L'audit met en évidence les pages à faible nombre de mots afin que vous puissiez les étoffer ou les regrouper.Titres et structure de la page
Des balises H1–H3 hors ordre, des structures de titres non optimisées et des URL complexes rendent l’exploration plus difficile. Nous signalons les lacunes dans les titres, les problèmes d’URL et les problèmes canoniques.SEO technique
Une réponse du serveur lente, un HTTPS mixte et des fichiers HTML trop volumineux nuisent à la Visibilité. Le rapport répertorie les erreurs de code d'état et d'autres Problèmes de serveur à corriger.Vitesse des pages et Signaux Web essentiels
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.Utilisabilité sur Mobile
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.Indexation et accès à l'exploration
Les blocages dans robots.txt, les balises noindex et les pages orphelines empêchent les moteurs de recherche de voir votre contenu. Nous répertorions tous les obstacles pour que vous puissiez les supprimer.Backlink et signaux de confiance
Un profil de liens faible ou saturé de spam fait baisser l'autorité. L'audit met en évidence des Possibilités de backlinks, des problèmes de répartition des Nofollow et la Visibilité des partages sociaux afin que vous puissiez renforcer le SEO off-page.
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
Foire aux questions
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?
Essayez Audit de siteUpgrade 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.