Démarrage rapide
Ce guide couvre toutes les caractéristiques de la vitamine B12 :
- Commencer — Create your account and finish the one-time setup
- Comment utiliser un créateur de sites web IA — Generate a full multi-page site draft from a short business description
- Comment utiliser un blog — Draft, schedule, and publish posts without leaving your dashboard
- Comment utiliser les intégrations tierces — Connect Stripe, Calendly, Google Analytics, and Zapier to your site
- Comment utiliser le SEO on-page — Fix titles, meta descriptions, and headings with guided checks
- Comment utiliser un agent IA — Answer visitor questions and capture leads around the clock
- Comment utiliser le marketing par e-mail et l'automatisation — Send campaigns and trigger follow-ups from contacts already in B12
- Comment utiliser les invites de site Web personnalisables basées sur l'IA — Rewrite any section by telling the AI exactly what to change
- Comment utiliser la gestion des contacts — Track every lead, note, and payment inside the built-in CRM
- Comment utiliser le générateur de sites web GPT — Spin up a starter site inside ChatGPT and import it into B12
Temps nécessaire : 5 minutes par fonctionnalité
Vous trouverez également dans ce guide : Conseils de pro | Erreurs courantes | Dépannage | Tarification | Alternatives
Pourquoi faire confiance à ce guide ?
I’ve run B12 for eight months and tested every feature covered here. This tutorial comes from real hands-on use, not vendor screenshots.
B12 is one of the fastest AI website builders available today.
But most users stop after generating their first draft.
That leaves the blogging, SEO, email, and CRM tools sitting unused.
This guide shows you how to use all nine, step by step.
Tutoriel B12
This How to Use B12 tutorial walks through every B12 feature in order, from your first login to the automation most people never switch on.
B12
Describe your entreprise in one sentence and get a full website draft in about 60 seconds. B12 bundles blogging, on-page SEO, an AI agent, email automation, invoicing, and a built-in CRM into one dashboard. Build and preview your site before you pay anything.
Premiers pas avec la vitamine B12
Before touching any feature, finish this one-time setup.
Cela prend environ trois minutes.
Étape 1 : Créez votre compte
Allez à b12.io and click Get Started.
Enter your email address and a password.
You’ll be asked what your business does before you reach the dashboard.
✓ Point de contrôle: Vérifiez votre boîte de réception pour l'e-mail de confirmation.
Step 2: Open Your Draft Site
B12 runs in the browser, so there is nothing to download.
Log in and your generated draft loads automatically.
Here’s what my own first draft looked like:
✓ Point de contrôle: You should land on the dashboard with a draft site listed.
Step 3: Finish Initial Setup
Upload your logo and set your brand colours under Design.
Add your business address, phone number, and working hours.
Connect a custom domain now if you already own one.
✅ Terminé : Vous êtes prêt à utiliser n'importe quelle fonctionnalité ci-dessous.
Comment utiliser le créateur de sites web B12 AI
Créateur de sites web IA turns one plain description of your business into a working multi-page website.
Voici comment l'utiliser étape par étape.
Étape 1 : Décrivez votre entreprise
Open the builder and type what your business does.
Keep it to one or two plain sentences. Skip the buzzwords.
Step 2: Generate Your Draft
Click Generate and wait about 60 seconds.
Voici à quoi cela ressemble :
✓ Point de contrôle: You should see a draft site with a home page, services page, and contact form.
Étape 3 : Modifier et publier
Swap any text or image in the editor, then hit Publish.
Fix the homepage headline first. It carries more weight than anything below it.
✅ Résultat : You have a live, editable website built from one sentence.
💡 Conseil de pro : Generate two drafts using slightly different descriptions. Keep whichever layout reads better.
How to Use B12 Blogging Tool
Bloguer lets you write and ship blog posts inside the same dashboard as your site.
Voici comment l'utiliser étape par étape.
Step 1: Open the Blog Tab
Click Blog in the left sidebar, then New Post.
Pick a topic your customers actually search for.
Step 2: Draft Your Post
Enter a title and let the AI build an outline you can edit.
Voici à quoi cela ressemble :
✓ Point de contrôle: Your draft should appear in the post list marked Draft.
Étape 3 : Programmer ou publier
Set a publish date, or push it live straight away.
Scheduling two posts ahead keeps the blog alive during busy weeks.
✅ Résultat : A finished post sits on your site with clean formatting and internal links.
💡 Conseil de pro : Write the title before the outline. The AI follows a sharp title far more closely.
Comment utiliser les intégrations tierces de B12
Intégrations tierces connects your site to the outside tools you already pay for.
Voici comment l'utiliser étape par étape.
Étape 1 : Ouvrir les intégrations
Go to Settings, then Integrations.
The list is grouped by payments, scheduling, and analytics.
Étape 2 : Connectez votre outil
Click Connect and sign in to the tool when prompted.
Voici à quoi cela ressemble :
✓ Point de contrôle: The tool should show a green Connected label in the list.
Étape 3 : Tester la connexion
Run one test booking or one test payment.
Refund the test payment straight away so your reportage reste propre.
✅ Résultat : Payments, bookings, and traffic données flow into the tools you already use.
💡 Conseil de pro : Connect Google Analytics first. Traffic data from week one makes later changes easier to judge.
Comment utiliser la vitamine B12 pour le référencement naturel sur page
Référencement sur page walks you through the title tags, meta descriptions, and headings on every page.
Voici comment l'utiliser étape par étape.
Étape 1 : Ouvrir les paramètres de la page
Select a page, then click the SEO tab.
Étape 2 : Rédigez votre titre et votre description
Add a title tag and a meta description for that exact page.
Voici à quoi cela ressemble :
✓ Point de contrôle: The preview snippet should show your title without a cut-off ellipsis.
Step 3: Run the Page Check
Click Check and clear anything flagged in red.
Missing alt text and duplicate H1 tags are the two most common flags.
✅ Résultat : Every page carries its own title, description, and clean heading order.
💡 Conseil de pro : Keep title tags under 60 characters. Anything longer gets trimmed in search results.
Comment utiliser l'agent d'IA B12
Agent IA answers visitor questions on your site and collects contact details while you sleep.
Voici comment l'utiliser étape par étape.
Step 1: Enable the Agent
Go to AI Agent and toggle it on.
Choose which pages it appears on.
Étape 2 : Entraînez-vous à l’utiliser dans votre entreprise.
Paste your service list and your most common questions.
Voici à quoi cela ressemble :
✓ Point de contrôle: A chat bubble should appear on your published site.
Step 3: Set the Handoff Rule
Send anything it cannot answer to your email.
Pricing questions are worth handling yourself. Let the agent pass those straight through.
✅ Résultat : Visitors get answers at 2am and you get their email address.
💡 Conseil de pro : Read the chat logs weekly. The questions people ask are free page ideas.
How to Use B12 Email Marketer & Automation
Email Marketing & Automation sends campaigns and automatic follow-ups to the contacts already stored in your account.
Voici comment l'utiliser étape par étape.
Step 1: Pick Your Audience
Open Email, then select a contact tag or your full list.
Étape 2 : Élaborer la campagne
Choose a template and edit the subject line and body.
Voici à quoi cela ressemble :
✓ Point de contrôle: The campaign should show a recipient count before you send.
Step 3: Set the Trigger
Send now, or fire it when someone submits your contact form.
A same-day reply beats a polished one sent three days later.
✅ Résultat : New leads get a follow-up email without you touching anything.
💡 Conseil de pro : Send yourself a test first. Broken merge tags are obvious in a real inbox.
Comment utiliser les invites de site Web d'IA personnalisables B12
Messages de site Web personnalisables par IA rewrites any block on your page based on an instruction you type yourself.
Voici comment l'utiliser étape par étape.
Étape 1 : Sélectionner une section
Click any block, then choose Edit with AI.
Étape 2 : Rédigez votre consigne
Say what you want changed in one direct sentence.
Voici à quoi cela ressemble :
✓ Point de contrôle: The section should update in place while the rest of the page stays untouched.
Étape 3 : Accepter ou régénérer
Keep the new version, or run it again with a tighter prompt.
Two rounds is usually enough. Past that, edit the text by hand.
✅ Résultat : Your copy sounds like your business instead of a template.
💡 Conseil de pro : Name your audience in the prompt. ‘Rewrite for busy dentists’ beats ‘make it better’.
How to Use B12 Contact Manager
Gestion des contacts keeps every lead, note, invoice, and booking on one contact record.
Voici comment l'utiliser étape par étape.
Step 1: Open Contacts
Click Contacts to see everyone who filled in a form.
Step 2: Tag and Annotate
Add a tag and a short note after every conversation.
Voici à quoi cela ressemble :
✓ Point de contrôle: Each contact should show its source page and the date it arrived.
Step 3: Take Action from the Record
Send an invoice or book a réunion without leaving the page.
Every action logs to the timeline, so nothing gets chased twice.
✅ Résultat : You stop losing leads in your inbox.
💡 Conseil de pro : Tag by source, not by status. Source tags tell you which pages actually earn money.
Comment utiliser le générateur de site web B12 GPT
Site web Générateur GPT lets you build a starter site from inside ChatGPT, then bring it into your account.
Voici comment l'utiliser étape par étape.
Étape 1 : Ouvrez le GPT
Find the B12 Website Generator in the ChatGPT magasin.
Step 2: Describe Your Site
Give it your business type, your city, and your main service.
Voici à quoi cela ressemble :
✓ Point de contrôle: ChatGPT should hand back a live preview link to a draft site.
Step 3: Import and Refine
Open the link it returns and finish the site in B12.
Treat the GPT output as a rough draft. The real editing happens in the dashboard.
✅ Résultat : You go from idea to draft site without opening a builder first.
💡 Conseil de pro : Ask the GPT for three homepage headline options before you import. Editing later takes longer.
Conseils et astuces de pro sur la vitamine B12
After eight months inside the editor, these are the tips worth passing on.
Raccourcis clavier
| Action | Raccourci |
|---|---|
| Enregistrez vos modifications | Ctrl / Cmd + S |
| Annuler la dernière modification | Ctrl/Cmd + Z |
| Rétablir la dernière modification | Ctrl/Cmd + Maj + Z |
| Insérer un lien | Ctrl/Cmd + K |
Fonctionnalités cachées que la plupart des gens ignorent
- Duplicate any page: Right-click a page in the sidebar to clone its layout for a new service.
- Invoicing from a contact: Open any contact record and bill them without opening a separate tool.
- Draft versions: Publish changes only when you’re ready. The live site stays untouched while you edit.
Here are the benefits that showed up fastest for me:
The time saved on setup was the one I felt immediately.
B12 Erreurs courantes à éviter
Mistake #1: Publishing the First Draft Untouched
❌ Faux : Generating a site and hitting Publish within five minutes.
✅ À droite : Rewrite the homepage headline and service descriptions first. AI copy is a starting point, not finished text.
Mistake #2: Ignoring Page-Level SEO
❌ Faux : Leaving every page with the same default title tag.
✅ À droite : Give each page its own title and meta description before you announce the site.
Mistake #3: Treating the CRM as an Address Book
❌ Faux : Collecting form submissions and never tagging or following up on them.
✅ À droite : Tag every lead by source, then trigger an automatic follow-up email the same day.
Dépannage de la vitamine B12
Problem: Your Custom Domain Won’t Connect
Cause: DNS records point somewhere else, or they haven’t propagated yet.
Réparer: Copy the exact records from Settings into your registrar. Then wait up to 48 hours before retrying.
Problem: The Generated Copy Sounds Generic
Cause: Your original business description was too short or too vague.
Réparer: Use the AI prompt tool on each section. Name your customer and your city in the instruction.
Problem: Contact Form Submissions Never Arrive
Cause: Notification emails are landing in spam, or the form is missing a recipient.
Réparer: Set a recipient address under form settings. Then submit a test and whitelist the sender.
📌 Note: If none of these fix your issue, contact B12 support from the dashboard.
Qu'est-ce que la vitamine B12 ?
B12 is an AI website builder aimed at service businesses that need a working site fast.
Think of it as a web designer, a copywriter, and a small CRM sharing one dashboard.
Regardez ce bref aperçu :
Il comprend les fonctionnalités clés suivantes :
- Créateur de sites web IA : Builds pages, copy, and images from a single prompt
- Bloguer : Drafting, scheduling, and publishing built into the site editor
- Intégrations tierces : Stripe, Calendly, Google Analytics, Zapieret plus encore
- Référencement sur page : Guided checks for titles, meta descriptions, and heading structure
- Agent IA : A chat agent that handles questions and captures leads
- Marketing par e-mail et automatisation : Campaigns and triggered follow-ups powered by your contact list
- Messages personnalisables pour sites web basés sur l'IA : Section-level rewrites driven by your own instructions
- Gestion des contacts : A built-in CRM holding leads, notes, invoices, and bookings
- Générateur de site web GPT : A ChatGPT entry point that hands a draft site back to B12
For the full breakdown, see our revue de la vitamine B12.
Here’s how the dashboard is laid out:
Everything above runs from that single screen.
Tarification de la vitamine B12
Voici le prix de la vitamine B12 en 2026 :
| Plan | Prix | Idéal pour |
|---|---|---|
| Basique | 42 $/mois | Solo founders launching a first site |
| Professionnel | 169 $/mois | Growing businesses using blogging and email |
| avancé | 339 $/mois | Teams running client work and heavy automation |
Essai gratuit : Yes — you can generate and preview a full site draft before paying.
Garantie de remboursement : Not advertised. Plans are monthly and cancel from billing settings.
Here’s the current plan comparison:
💰 Meilleur rapport qualité-prix : Professional — it unlocks blogging and email automation, which is where the platform earns its keep.
Vitamine B12 vs alternatives
Comment se compare la vitamine B12 ? Voici un aperçu de la concurrence :
| Outil | Idéal pour | Prix | Notation |
|---|---|---|---|
| B12 | Service businesses needing site plus CRM | 42 $/mois | ⭐ 4,5 |
| Gamma | Fast decks and simple one-pagers | 10 $/mois | ⭐ 4,6 |
| Durable | 30-second sites for local trades | 15 $/mois | ⭐ 4,4 |
| 10Web | AI-built WordPress with hosting | 20 $/mois | ⭐ 4,5 |
| Encadreur | Les concepteurs qui souhaitent un contrôle au pixel près | 5 $/mois | ⭐ 4,7 |
| Dorik | Agencies reselling client sites | 18 $/mois | ⭐ 4,5 |
| Jimdo | Small shops on a tight budget | 14 $/mois | ⭐ 4.2 |
| Typedream | Notion-style editing for founders | 15 $/mois | ⭐ 4,3 |
Sélection rapide :
- Meilleur résultat global : B12 — site, SEO, email, and CRM in one subscription
- Meilleur budget : Framer — strong free tier and cheap entry plan
- Idéal pour les débutants : Durable — the shortest path from idea to live page
- Idéal pour les agences : Dorik — built around reselling and client handover
🎯 Alternatives à la vitamine B12
Looking for B12 alternatives? Here are the options worth checking:
- 🎨 Gamma: Best for quick decks and single-page sites built from an outline.
- ⚡ Durable: Builds a live business site in roughly 30 seconds with invoicing attached.
- 👶 Courge musquée : Simple AI site generation aimed at first-time owners with no design skills.
- 💼 Conception du code : AI layouts with more control over structure and section styling.
- 🌟 Site : Visual canvas editor for people who want to drag every element.
- 🔧 10Web : Generates real WordPress sites, so you keep plugins and full ownership.
- 🚀 Constructeur d'ananas : Lightweight AI builder with built-in blogging for small brands.
- ⭐ Encadreur : Designer-grade control, animations, and the cleanest published code.
- 🏢 Dorik : White-label plans make client resale straightforward for small agencies.
- 📊 Typedream : Notion-style editing that suits founders writing their own copy.
- 💰 Jimdo : Cheap plans with legal pages and basic shop tools for local businesses.
- 🎯 Tarte aux œufs: Covers websites and mobile apps from the same no-code account.
Pour la liste complète, consultez notre Alternatives à la vitamine B12 guide.
⚔️ Comparaison de la vitamine B12
Here’s how B12 stacks up head to head:
- B12 vs Gamma: Gamma wins on speed for présentations. B12 wins whenever you need a real multi-page site.
- B12 vs Durable: Durable launches faster. B12 gives you deeper SEO controls and proper email automation.
- B12 contre la courge butternut: Butternut is simpler to learn. B12 offers far more once your business grows.
- B12 vs Codedesign: Codedesign gives finer layout control. B12 bundles the CRM and invoicing Codedesign lacks.
- B12 vs Siter: Siter suits visual tinkerers. B12 suits owners who want the site written for them.
- B12 vs 10Web: 10Web wins if you want WordPress. B12 wins if you never want to touch plugins.
- B12 contre Pineapple Builder: Pineapple Builder is cheaper. B12 covers email, contacts, and payments in the same plan.
- B12 contre Framer: Framer wins on design polish. B12 wins on business tools bundled behind the site.
- B12 contre Dorik: Dorik is better for reselling. B12 is better for running your own service business.
- B12 contre Typedream: Typedream feels nicer to write in. B12 handles lead capture and follow-up properly.
- B12 contre Jimdo: Jimdo costs less each month. B12 replaces three separate subscriptions instead.
- B12 contre Appy Pie: Appy Pie also builds apps. B12 stays focused and does websites noticeably better.
Commencez à utiliser la vitamine B12 dès maintenant
Vous avez appris à utiliser toutes les principales fonctionnalités de la vitamine B12 :
- ✅ Créateur de sites web IA
- ✅ Bloguer
- ✅ Intégrations tierces
- ✅ Référencement sur page
- ✅ Agent IA
- ✅ Marketing par e-mail et automatisation
- ✅ Messages d'aide personnalisables pour sites web basés sur l'IA
- ✅ Gestion des contacts
- ✅ Générateur de sites web GPT
Étape suivante : Choisissez une fonctionnalité et essayez-la dès maintenant.
La plupart des gens commencent par le créateur de sites web IA.
Cela prend moins de cinq minutes.
Foire aux questions
Qu'est-ce que la B12 io ?
B12.io is an AI website builder for service businesses. It generates a full site draft from one description, then adds blogging, SEO, email, invoicing, and a built-in CRM.
Le créateur de sites web B12 AI est-il gratuit ?
You can generate and preview a full site draft at no cost. Publishing a live site needs a paid plan, starting at $42/month on Basic.
La vitamine B12 est-elle légitime ?
Yes. B12 is an established website platform used mainly by small service firms, agencies, and consultants. It charges standard monthly subscription pricing with no long contract.
Que sont les sites web sur la vitamine B12 ?
They are AI-generated sites built around service businesses. Each one ships with service pages, contact forms, scheduling, payments, and an editor you control after launch.
Is B12 good for beginners?
Yes. The first draft arrives in about 60 seconds, and every edit happens in a visual editor. No coding or design experience is needed to publish.
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