Image Labeling API — Classify & Tag Images with AI
Automatically detect and categorize diverse themes within images. Get structured labels with confidence scores for content categorization, image understanding, and automated tagging.
Features
Theme Detection
Identify diverse themes and categories within images for comprehensive content understanding.
Confidence Scores
Each label includes a confidence score to help you filter and prioritize results.
Content Categorization
Automatically tag and categorize images for search, organization, and content management.
Flexible Input
Upload a file via multipart or pass a public image URL — both work seamlessly.
Fast Processing
Optimized model for low-latency processing. Get structured results in seconds.
Cloud-Based
No GPU needed on your end. Fully managed cloud infrastructure handles the processing.
API Reference
1 endpoint, simple integration. Here's everything you need.
Supported Content Types
https://label-image.p.rapidapi.com/detect-labelIdentify and categorize themes within an image. Returns a list of detected labels with descriptions and confidence scores.
imagefilerequiredImage file (JPEG, PNG, etc.) — use with multipart/form-data
urlstringrequiredPublic URL of the image to process — use with application/x-www-form-urlencoded
Send either image (file upload) or url (form-encoded), not both.
{
"statusCode": 200,
"body": {
"labels": [
{
"description": "Nature",
"score": 0.97
},
{
"description": "Mountain",
"score": 0.94
},
{
"description": "Sky",
"score": 0.91
}
]
}
}Response
Returns JSON with an array of detected labels, each containing a description and confidence score.
Quick Start
Copy-paste code to get started in seconds. Replace YOUR_API_KEY with your RapidAPI key.
# File upload
curl -X POST "https://label-image.p.rapidapi.com/detect-label" \
-H "x-rapidapi-key: YOUR_API_KEY" \
-H "x-rapidapi-host: label-image.p.rapidapi.com" \
-F "image=@photo.jpg"
# URL input
curl -X POST "https://label-image.p.rapidapi.com/detect-label" \
-H "x-rapidapi-key: YOUR_API_KEY" \
-H "x-rapidapi-host: label-image.p.rapidapi.com" \
-H "Content-Type: application/x-www-form-urlencoded" \
-d "url=https://example.com/photo.jpg"Pricing
Start free, scale as you grow. All plans include full API access with no credit card required for the free tier.
Basic
30 requests/mo
- Full API access
- All endpoints
- Standard support
Pro
5,000 requests/mo
- Full API access
- All endpoints
- Standard support
Ultra
10,000 requests/mo
- Full API access
- All endpoints
- Standard support
Mega
50,000 requests/mo
- Full API access
- All endpoints
- Standard support
Frequently Asked Questions
- How does the image labeling API categorize images?
- The image labeling API uses AI to detect diverse themes and categories within an image, such as Nature, Mountain, Sky, or Food. Each label is returned with a confidence score, enabling automated image tagging, content categorization, and search optimization.
- Can I use this API for automatic image tagging in my application?
- Yes. The label image API is designed for automated tagging workflows. Upload an image or pass a URL, and the API returns structured labels with confidence scores that you can store as metadata for search, filtering, and content management systems.
- What is the difference between image labeling and object detection?
- Image labeling identifies high-level themes and categories (e.g., Nature, Urban, Food) across the entire image, while object detection locates specific objects with bounding boxes. Use the labeling API for content categorization and the object detection API when you need precise object positions.
Tutorials & Guides
Learn how to integrate this API with step-by-step tutorials and real-world use cases.
Start Using Label Image Today
Sign up on RapidAPI to get your API key. The free tier includes generous monthly requests — no credit card required.