5 façons d'utiliser l'IA Gemini dans n8n pour traiter des images et des PDFs
Avancé
Ceci est unBuilding Blocks, AIworkflow d'automatisation du domainecontenant 28 nœuds.Utilise principalement des nœuds comme Set, Filter, SplitOut, HttpRequest, ManualTrigger, combinant la technologie d'intelligence artificielle pour une automatisation intelligente. 在n8n中utilisationGemini AItraitement图像etPDFde5种方法
Prérequis
- •Peut nécessiter les informations d'identification d'authentification de l'API cible
- •Clé API Google Gemini
Nœuds utilisés (28)
Aperçu du workflow
Visualisation des connexions entre les nœuds, avec support du zoom et du déplacement
Exporter le workflow
Copiez la configuration JSON suivante dans n8n pour importer et utiliser ce workflow
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"parameters": {
"text": "={{ $('Loop Over Items').all() }}",
"options": {
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"promptType": "define"
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{
"id": "00348203-882f-48da-8127-e57cf30c5b20",
"name": "Obtenir une image depuis Unsplash2",
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"position": [
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"parameters": {
"url": "={{ $json.url }}",
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"name": "Obtenir une image depuis Unsplash3",
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"url": "={{ $json.urls }}",
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"parameters": {
"url": "=https://generativelanguage.googleapis.com/v1beta/models/gemini-2.0-flash:generateContent",
"method": "POST",
"options": {},
"jsonBody": "={\n \"contents\": [{\n \"parts\":[\n {\"text\": \"Whats on this image?\"},\n {\n \"inline_data\": {\n \"mime_type\": \"image/jpeg\",\n \"data\": \"{{ $json.data }}\"\n }\n }\n ]\n }]\n}\n",
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"typeVersion": 3
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{
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"name": "Agent IA2",
"type": "@n8n/n8n-nodes-langchain.agent",
"position": [
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"parameters": {
"text": "whats on the image",
"options": {
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"id": "c303ab4e-155f-4c36-bf07-4825d0d1fd93",
"name": "Obtenir une image depuis Unsplash4",
"type": "n8n-nodes-base.httpRequest",
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"parameters": {
"url": "=https://plus.unsplash.com/premium_photo-1740023685108-a12c27170d51?q=80&w=2340&auto=format&fit=crop&ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D",
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"name": "Obtenir un fichier PDF",
"type": "n8n-nodes-base.httpRequest",
"position": [
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"parameters": {
"url": "https://www.w3.org/WAI/ER/tests/xhtml/testfiles/resources/pdf/dummy.pdf",
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"id": "bb7ba59e-050a-4259-8238-dc25f458e3c4",
"name": "Obtenir une image depuis Unsplash",
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"parameters": {
"url": "=https://plus.unsplash.com/premium_photo-1740023685108-a12c27170d51?q=80&w=2340&auto=format&fit=crop&ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D",
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"parameters": {
"url": "=https://generativelanguage.googleapis.com/v1beta/models/gemini-2.0-flash:generateContent",
"method": "POST",
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"jsonBody": "={\n \"contents\": [{\n \"parts\":[\n {\"text\": \"Whats on this pdf?\"},\n {\n \"inline_data\": {\n \"mime_type\": \"application/pdf\",\n \"data\": \"{{ $json.data }}\"\n }\n }\n ]\n }]\n}\n",
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"name": "Query Gemini Auth account"
}
},
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"name": "Appeler l'API Gemini avec une Image",
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"parameters": {
"url": "=https://generativelanguage.googleapis.com/v1beta/models/gemini-2.0-flash:generateContent",
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"jsonBody": "={\n \"contents\": [{\n \"parts\":[\n {\"text\": \"Whats on this image?\"},\n {\n \"inline_data\": {\n \"mime_type\": \"image/jpeg\",\n \"data\": \"{{ $json.data }}\"\n }\n }\n ]\n }]\n}\n",
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"name": "Convertir en base64 (image)",
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"name": "Définir des URL d'images multiples",
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"value": "=[\n \"https://plus.unsplash.com/premium_photo-1740023685108-a12c27170d51?q=80&w=2340&auto=format&fit=crop&ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D\",\n \"https://images.unsplash.com/photo-1739609579483-00b49437cc45?q=80&w=2342&auto=format&fit=crop&ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D\"\n]\n"
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"content": "## When clicking \"Test workflow\"\n\nThis trigger demonstrates five different approaches to analyze media with AI:\n1. Top branch: Single image with automatic binary passthrough\n2. Second branch: Multiple images with custom prompts\n3. Third branch: Standard n8n item processing with direct API\n4. Fourth branch: PDF analysis via direct API\n5. Fifth branch: Image analysis via direct API\n\nEach approach has advantages depending on your use case.\n\n"
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"value": "={{ \n[\n {\n url: \"https://plus.unsplash.com/premium_photo-1740023685108-a12c27170d51?q=80&w=2340&auto=format&fit=crop&ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D\",\n prompt: \"what is special about this image?\",\n process: true\n },\n {\n url: \"https://images.unsplash.com/photo-1739609579483-00b49437cc45?q=80&w=2342&auto=format&fit=crop&ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D\",\n prompt: \"what is the main color?\",\n process: true\n },\n {\n url: \"https://plus.unsplash.com/premium_photo-1740023685108-a12c27170d51?q=80&w=2340&auto=format&fit=crop&ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D\",\n prompt: \"test\", \n process: false\n }\n]\n}}"
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"content": "## METHOD 1: Single image with automatic binary passthrough\n\nThis branch demonstrates the easiest way to analyze a single image with AI:\n1. Fetch an image from Unsplash\n2. Send directly to the AI Agent with \"Automatically Passthrough Binary Images\" enabled\n3. Get AI analysis without any data transformation\n\nBEST FOR: Quick implementation with minimal configuration for single image analysis.\n\n"
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"position": [
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"caseSensitive": true,
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"combinator": "and",
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"width": 460,
"height": 360,
"content": "## METHOD 2: Multiple images with custom prompts\n\nThis branch shows how to analyze different images with custom instructions:\n1. Prepare data structure with image URLs and their corresponding prompts\n2. Split into individual items and filter if needed\n3. Fetch each image from Unsplash\n4. Process sequentially through the Loop node\n5. Analyze each with its specific prompt using the AI Agent\n\nBEST FOR: When you need different analysis goals for each image (e.g., one for object detection, another for scene description).\n"
},
"typeVersion": 1
},
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"id": "057ecbfa-3079-451f-9376-eefcdf4ab96a",
"name": "Note adhésive3",
"type": "n8n-nodes-base.stickyNote",
"position": [
1360,
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"parameters": {
"color": 7,
"width": 360,
"height": 380,
"content": "## METHOD 3: Standard n8n item processing with direct API\n\nThis branch demonstrates n8n's standard approach to handling multiple items:\n1. Define multiple image URLs in a single node\n2. Split into individual items for processing\n3. Fetch each image individually\n4. Transform each to base64 format\n5. Make direct API calls to Gemini for each item\n\nBEST FOR: Processing multiple images using n8n's standard item-by-item approach with direct API control.\n\n"
},
"typeVersion": 1
},
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"name": "Note adhésive4",
"type": "n8n-nodes-base.stickyNote",
"position": [
920,
360
],
"parameters": {
"width": 340,
"height": 280,
"content": "## METHOD 4: PDF analysis via direct API\n\nThis branch shows how to analyze PDF documents:\n1. Fetch a PDF file\n2. Transform to base64 format\n3. Send directly to Gemini API for analysis\n\nBEST FOR: Document analysis, text extraction, summarization of PDFs.\n"
},
"typeVersion": 1
},
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"id": "f50dae19-77e4-4450-a516-7f0e676d161a",
"name": "Note adhésive5",
"type": "n8n-nodes-base.stickyNote",
"position": [
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"parameters": {
"width": 340,
"height": 300,
"content": "## METHOD 5: Image analysis via direct API\n\nThis branch demonstrates direct API control for image analysis:\n1. Fetch an image\n2. Transform to base64 format\n3. Make a customized API call to Gemini\n\nBEST FOR: Advanced users who need precise control over API parameters and response handling.\n"
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"typeVersion": 1
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},
{
"node": "bb7ba59e-050a-4259-8238-dc25f458e3c4",
"type": "main",
"index": 0
},
{
"node": "c303ab4e-155f-4c36-bf07-4825d0d1fd93",
"type": "main",
"index": 0
}
]
]
}
}
}Foire aux questions
Comment utiliser ce workflow ?
Copiez le code de configuration JSON ci-dessus, créez un nouveau workflow dans votre instance n8n et sélectionnez "Importer depuis le JSON", collez la configuration et modifiez les paramètres d'authentification selon vos besoins.
Dans quelles scénarios ce workflow est-il adapté ?
Avancé - Blocs de construction, Intelligence Artificielle
Est-ce payant ?
Ce workflow est entièrement gratuit et peut être utilisé directement. Veuillez noter que les services tiers utilisés dans le workflow (comme l'API OpenAI) peuvent nécessiter un paiement de votre part.
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Auteur
Julian Kaiser
@jksrFull Stack Developer turned AI & Automation Engineer, implementing intelligent solutions with custom code, LLMs & n8n. Use my link to book a consultation on automating your business processes.
Liens externes
Voir sur n8n.io →
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