1. Why faire a SEO audit
A SEO audit is the equivalent d'un bilan of health for your webwebsite. Tout like you consult a medecin for a check-up annuel, your website a need d'be examine regularly for identify the problems that freinent your visibility on Google.
Without audit, you travaillez a the aveugle. You publiez peut-be of the content of quality, but erreurs technicals invisibles empechent Google of the indexer correctly. Ou well your pages are well indexees, but problems d'optimisation on-page you empechent d'achieve the first page. The SEO audit met en lumiere all these blocages and you gives a plan d'action clair and prioritaire.
A SEO audit completeeee couvre four fields : the technical, the optimisation on-page, the content and the backlinks. This checklist of 50 points is celle that our experts utilisent to the daily at Pirabel Labs. Prenez the time of verify each point, notez the problems identifies, then address them par ordre of priority.
A quelle frequency faire a audit ?
We recommandons a audit completeeee all the 6 mois, with verifications technicals mensuelles. Apres a refonte of site, a migration or a changement d'hebergeur, a audit immediate is indispensable. Si you constatez a chute soudaine of organic traffic, a audit d'urgence s'impose for identify quickly the cause of the probleme.
2. Checklist technical (points 1-15)
The SEO technical is the foundation of your SEO. If your website presents problems technicals, no content also brillant soit-il ne pourra itself positionner correctly. Here is the 15 points technicals essentials a verify.
check_circle1. Active SSL Certificate (HTTPS) : Verify that all your pages are servies en HTTPS with a certificat valid. A site non secure is penalise par Google and effraie the visitors.
check_circle2. Correct robots.txt File : Make sure that your robots.txt ne bloque not of pages importants. Verify-le a the adresse votresite.com/robots.txt.
check_circle3. Sitemap XML soumis : Your websitemap must be generated, a jour and soumis in Google Search Console. Il must lister all your pages importants.
check_circle4. Aucune erreur d'indexation : Verify in Search Console that all your pages importants are indexees. Corrigez the erreurs "Exclues" or "Non indexees".
check_circle5. Core Web Vitals conforms : LCP inferieur a 2,5 secondes, FID inferieur a 100 ms, CLS inferieur a 0,1. Test with PageSpeed Insights.
check_circle6. Site mobile-friendly : Test each template of page on mobile. The text must be lisible, the boutons cliquables and the navigation fluide.
check_circle7. Pas of content duplique : Verify that each page n'est accessible that par a only URL. Use the balises canonical si necessary.
check_circle8. Redirections 301 en place : All the anciennes URL must rediriger toward the new with redirections 301 (permanentes), not 302 (temporaires).
check_circle9. Pas of pages 404 : Identify and corrigez all the pages that rensee a erreur 404. Mettez en place redirections or create a page 404 utile.
check_circle10. Structure d'URL own : Vos URL must be courtes, descriptives and contenir your keywords. Evitez the settings inutiles and the caracteres speciaux.
check_circle11. Temps of reponse serveur (TTFB) : The time of reponse of your serveur must be inferieur a 200 ms. A TTFB eleve indique a problem d'hebergement.
check_circle12. Compression GZIP/Brotli activee : Activez the compression on your serveur for reduire the taille fichiers transferes of 60 a 80 %.
check_circle13. Cache navigateur configured : Definissez durees of cache appropriees for your resources statiques (images, CSS, JS) afin d'accelerer the visites repetees.
check_circle14. Pas of resources bloquees : Verify in Search Console that Google can acceder a all the resources (CSS, JS, images) necessarys to the rendu of your pages.
check_circle15. Schema.org implemente : Add data structurees (Schema.org) for aider Google a understand your content : Organisation, Article, FAQ, Product, LocalBusiness according to your cas.
3. Checklist on-page (points 16-30)
The optimisation on-page concerns the elements visibles and the code source of each page. Ce are the signaux the more directs that you envoyez a Google on the sujand your pages.
check_circle16. Balises title uniques and optimizedes : Each page must avoir a title unique contenant the word-cle principal, of 50 a 60 caracteres maximum.
check_circle17. Meta descriptions engaginges : Redigez descriptions uniques of 150-155 caracteres with word-cle and appel a the action.
check_circle18. A only H1 par page : Each page ne must contenir that a only H1 incluant the word-cle principal.
check_circle19. Hierarchie H2/H3 logique : Structurez your content with sous-titles H2 and H3 in a ordre hierarchique consistent.
check_circle20. Images optimizedes (taille) : Compressez your images without perte of quality visible. Use the format WebP when it is possible.
check_circle21. Attributs alt on all the images : Each image must avoir a attribut alt descriptif incluant your keywords when it is relevant.
check_circle22. Maillage interne consistent : Each page must contenir liens toward d'autres pages relevantes of your website with ancres descriptives.
check_circle23. Liens externes toward sources fiables : Incluez liens toward sources d'autorite for strengthen the credibilite of your content.
check_circle24. URL contenant the word-cle : Vos URL must be courtes and contenir the word-cle main : /guide-seo-debutant plutot that /page?id=12345.
check_circle25. Pas of liens casses internes : Verify regularly that all your internal links fonctionnent. Use a crawler like Screaming Frog.
check_circle26. Fil d'Ariane (breadcrumb) : Implementez a breadcrumb with data structurees for faciliter the navigation and aider Google a understand the hierarchie.
check_circle27. Open Graph and Twitter Cards : Configurez the balises OG for a affichage optimal lors of the partage on the social media.
check_circle28. Densite of keywords naturelle : Votre word-cle main must apparaitre naturally in the content without sur-optimisation. Visez 1-2 % of densite.
check_circle29. Appels a the action clairs : Each page must avoir a objective clair with a CTA visible for guider the user toward the action souhaitee.
check_circle30. Contenu au-dessus of the line of flottaison : The content important and the H1 must be visibles without scroller, especially on mobile.
4. Checklist content (points 31-40)
The content is the carburant of the SEO. Google recompense the sites that offer of the content relevant, original and mis a jour regularly. These 10 points you aident a evaluate the quality of your strategy of content.
check_circle31. Contenu 100 % original : Verify that no page ne contient of content copie d'autres sites. Use Copyscape or Siteliner for detecter the plagiat.
check_circle32. Contenu suffisamment long : Your pages main must contenir to the minimum 800 words. The articles of blog performants do generally 1 500 a 2 500 words.
check_circle33. Intention of recherche satisfaite : Your content must repondre exactement a this that the user cherche. Analyze the 10 firsts results Google for understand the intention.
check_circle34. Contenu a jour : Mettez a jour your articles anciens with information recentes. The dates affichees must reflect the last mise a jour.
check_circle35. Pas of pages thin content : Identify and enrichissez the pages with less of 300 words. Si they n'apportent not of value, fusionnez-les or supprimez-les.
check_circle36. Couverture thematique completeeeee : For each sujet, couvrez all the aspects that your audience recherche. Use the "People Also Ask" of Google like inspiration.
check_circle37. Editorial Calendar actif : Publiez of the content regularly according to a calendrier defini. The consistency is a signal of fraicheur for Google.
check_circle38. Pages pillars and clusters : Organisez your content en pages pillars (sujets principaux) and articles clusters (sous-sujets) relies between eux.
check_circle39. FAQ on the pages keys : Add a section FAQ on your pages main for targetr the featured snippets and repondre to the questions frequentes.
check_circle40. Lisibilite optimale : Use phrases courtes, paragraphes aeres, listes a puces ands sous-titles. Your content must be scannable.
5. Checklist backlinks (points 41-50)
The backlinks remain the a factors of classement the more importants. This section you aide a evaluate the quality of your profil of liens and a identify the opportunites.
check_circle41. Profil of liens naturel : Analyze your profil of backlinks with Ahrefs or Majestic. The repartition ancres must be naturelle and variee.
check_circle42. Pas of liens toxiques : Identify andsavouez the liens provenant of sites of spam, of fermes of liens or of sites penalises.
check_circle43. Diversite fields referents : Visez liens provenant of numberux fields differents plutot that a lot of liens d'un only site.
check_circle44. Liens since sites d'autorite : Recherat opportunites of liens since sites reconnus in your field : medias, blogs influents, institutions.
check_circle45. Ancres of liens variees : Vos ancres must varier between word-cle exact, brand, URL, generique ("cliquez ici") and long traine.
check_circle46. Liens competitors analyses : Etudiez the backlinks of your competitors for identify opportunites that you can also obtain.
check_circle47. Guest posting actif : Contribuez regularly a blogs of quality in your sector for obtain backlinks and the visibility.
check_circle48. Mentions of brand non liees : Recherat the mentions of your brand without lien and contactez the auteurs for demander the ajout d'un lien.
check_circle49. Liens casses toward your website : Identify the external links that pointent toward pages 404 of your website and mettez en place redirections.
check_circle50. Strategy of link building active : Mettez en place a processus continu of creation of content linkable and prospection of liens.
For realiser a SEO audit completeeee, you avez need good tools. Here is ceux that we utilisons daily at Pirabel Labs and that couvrent the 50 points of this checklist.
Outils frees indispensables
- Google Search Console : The tool officiel of Google for monitor the indexation, the performance of recherche and the erreurs technicals. Incontournable and free.
- Google Analytics 4 : For measure the traffic, the comportement users and the conversions. Essentiel for understand the impact of your SEO.
- Google PageSpeed Insights : Analyse the vitesse of chargement of your pages and the Core Web Vitals. Fournit recommendations d'amelioration.
- Google Mobile-Friendly Test : Verifie that your pages are correctly optimizedes for the appareils mobiles.
Outils payants recommandes
- Screaming Frog : A crawler of bureau that analyse all the pages of your website and detected the erreurs technicals. The version freee permand scanner up to 500 URL.
- Ahrefs : The tool of reference for the analyse of backlinks, the recherche of keywords and the audit of content. Indispensable for the points 41 a 50.
- SEMrush : A alternative completeeeee a Ahrefs with fonctionnalites d'technical audit automatise and d'analyse competitorielle.
- Siteliner : Detecte the content duplique within your own site. A tool simple but effective.
7. Que faire apres the audit
A fois your audit termine, you aurez a liste of problems a corriger. The key of the succes, it is the priorisation. Here is how organiser your corrections for a impact maximum.
Priorite 1 : the problems critiques
Start par the erreurs that empechent completeeeeement Google d'acceder to your content : pages importants non indexees, erreurs serveur (5xx), content duplique massif, problems of certificat SSL. These corrections have generally a impact immediate and significatif on your visibility.
Priorite 2 : the optimisations a strong impact
Ensuite, traitez the optimisations that offer the best rapport effort/resultat : title tags and meta descriptions manquantes or non optimizedes, Core Web Vitals non conforms, internal linking insuffisant, pages thin content. These ameliorations produisent results visibles en a few weeks.
Priorite 3 : the ameliorations continues
Enfin, mettez en place the processus d'amelioration continue : strategy of content, editorial calendar, prospection of backlinks, suivi mensuel KPI. The SEO is a travail of fond that requires of the consistency and the patience.
Documentez all your corrections in a tableur with the date d'implementation. Cela you permettra of measure the impact of each modification and understand this that fonctionne the better for your website. Repetez this audit all the 6 mois for maintain your website en parfaite health SEO.
A SEO audit n'est not a fin en soi, it is the point of depart d'un processus d'amelioration continue that transform your website en machine a generate of the traffic.
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