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How to Set Up Meta Ads for Beginners in 2026

14 minBEGINNER
Meta AdsFacebook AdsPublicité
Lire en français

Introduction

Meta Ads remains one of the highest-performing advertising channels in 2026 for reaching qualified audiences on Facebook and Instagram. This tutorial guides you progressively from creating an ad account to installing the pixel and setting up conversion events. You will learn to structure campaigns precisely and avoid common errors that waste budget. Each step includes concrete examples and ready-to-use code.

Prerequisites

  • Facebook account and professional page
  • Access to Meta Business Suite
  • Basic knowledge of HTML and JavaScript
  • Accessible website or landing page

Meta Pixel Installation

index.html
<!DOCTYPE html>
<html lang="fr">
<head>
  <meta charset="UTF-8">
  <title>Mon Site</title>
  <!-- Meta Pixel Code -->
  <script>
  !function(f,b,e,v,n,t,s)
  {if(f.fbq)return;n=f.fbq=function(){n.callMethod?
  n.callMethod.apply(n,arguments):n.queue.push(arguments)};
  if(!f._fbq)f._fbq=n;n.push=n;n.loaded=!0;n.version='2.0';
  n.queue=[];t=b.createElement(e);t.async=!0;
  t.src=v;s=b.getElementsByTagName(e)[0];
  s.parentNode.insertBefore(t,s)}(window, document,'script',
  'https://connect.facebook.net/en_US/fbevents.js');
  fbq('init', 'VOTRE_PIXEL_ID');
  fbq('track', 'PageView');
  </script>
</head>
<body>
  <!-- Votre contenu -->
</body>
</html>

This code installs the base Meta Pixel. Replace VOTRE_PIXEL_ID with the ID provided in Meta Events Manager. The pixel automatically sends the PageView event on every page load.

Adding a Purchase Event

checkout.js
function trackPurchase(orderId, value, currency) {
  fbq('track', 'Purchase', {
    value: value,
    currency: currency,
    content_ids: [orderId],
    content_type: 'product'
  });
}

// Exemple d'appel
trackPurchase('ORD-12345', 49.99, 'EUR');

This Purchase event sends sales data to Meta. It is essential for campaign optimization and ROAS tracking. Always send precise numeric values.

Conversion API Configuration

capi-config.json
{
  "pixel_id": "VOTRE_PIXEL_ID",
  "access_token": "VOTRE_ACCESS_TOKEN",
  "test_event_code": "TEST12345",
  "events": [
    {
      "event_name": "Purchase",
      "event_time": 1700000000,
      "user_data": {
        "em": "email@exemple.com",
        "ph": "33612345678"
      },
      "custom_data": {
        "value": 49.99,
        "currency": "EUR"
      }
    }
  ]
}

This JSON file structures calls to the Conversion API. It enables server-side event sending for better data reliability when third-party cookies are blocked.

Creating a Campaign via the Marketing API

create-campaign.js
const axios = require('axios');

const accessToken = 'VOTRE_ACCESS_TOKEN';
const accountId = 'act_VOTRE_ACCOUNT_ID';

async function createCampaign() {
  const response = await axios.post(
    `https://graph.facebook.com/v19.0/${accountId}/campaigns`,
    {
      name: 'Campagne Débutant 2026',
      objective: 'CONVERSIONS',
      status: 'PAUSED',
      special_ad_categories: []
    },
    { headers: { Authorization: `Bearer ${accessToken}` } }
  );
  console.log(response.data);
}

createCampaign();

This Node.js script creates a campaign via Meta's Marketing API. Always use the CONVERSIONS objective for e-commerce campaigns and set status to PAUSED before validation.

Pixel Test Script

test-pixel.sh
#!/bin/bash
curl -X POST \
  "https://graph.facebook.com/v19.0/VOTRE_PIXEL_ID/events?access_token=VOTRE_ACCESS_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "data": [{
      "event_name": "PageView",
      "event_time": '$(date +%s)', 
      "user_data": {"client_ip_address": "127.0.0.1"}
    }]
  }'

This bash script quickly tests sending events to the pixel. Replace the variables before running and check results in Events Manager.

Best Practices

  • Always use the Conversion API alongside the browser pixel
  • Name campaigns, ad sets, and ads consistently
  • Define custom audiences before launching
  • Test creatives with limited budgets for 3-5 days
  • Enable event verification in Events Manager

Common Mistakes to Avoid

  • Forgetting to validate the pixel in Events Manager before launch
  • Sending monetary values without currency
  • Using the Traffic objective instead of Conversions
  • Neglecting daily budget restrictions per ad set

Go Further

Deepen your mastery of Meta Ads and the Conversion API with our certified training: https://learni-group.com/formations