Cloudmersive API

⭐ Beginner's Pick Machine Learning / API Key Intermediate HTTPS CORS
Varies by plan (check documentation)

Overview

Cloudmersive Image Recognition API offers a suite of image processing capabilities including captioning, face detection, NSFW content classification, and object recognition. It is designed for easy integration with straightforward REST endpoints and API key authentication. A free tier is available, making it a good option for prototyping image analysis features.

💡

Beginner Tip

Send images as multipart/form-data with the file attached—Cloudmersive endpoints accept binary image uploads directly rather than URLs for most operations. Keep your API key in an environment variable and never hardcode it in client-side code.

Available Data

Cloudmersive data via REST API
JSON-formatted response data
Requires API key authentication

Example Response

JSON Response
{
  "status": "success",
  "data": {
    "result": "Data from Cloudmersive",
    "description": "Image captioning, face recognition, NSFW classification",
    "timestamp": "2025-01-15T10:00:00Z"
  }
}

Field Reference

Successful Indicates whether the API call completed without errors.
Description Auto-generated natural language caption describing the image content.
Score Confidence score for the generated description, between 0 and 1.
HighConfidenceLabels List of labels detected in the image with high confidence.
FaceCount Number of human faces detected in the image (on face detection endpoint).

Implementation Example

const url = "https://www.cloudmersive.com/image-recognition-and-processing-api";
// Replace headers or query params with the values required by this API.
const response = await fetch(url, {
  headers: {
  "X-API-Key": "YOUR_API_KEY"
  }
});
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data);

What Can You Build?

Note: These code examples are AI-generated and unverified. Always refer to the official API documentation for accurate usage.

Common Errors & Troubleshooting

401 Unauthorized API key is missing from the Apikey request header.
Add the header Apikey: YOUR_API_KEY to every request; note the header name is Apikey not Authorization.
400 Bad Request - unsupported format The uploaded file is not a supported image type or the multipart form field name is wrong.
Use JPEG or PNG files and ensure the form field is named imageFile as required by the endpoint.
503 Service Unavailable Free tier quota has been exhausted for the current period.
Upgrade to a paid plan or wait for the monthly quota reset; check your usage in the Cloudmersive dashboard.

Matrix Score Breakdown

🌐 Reachability 30/30
⚡ Speed 5/20
🔒 Security 15/15
🛠 Developer XP 17/20
✓ Reliability 10/15

Partially tested on Apr 5, 2026

Technical Specifications

Auth API Key
HTTPS REQUIRED
CORS YES
Category Machine Learning
Difficulty Intermediate
Verified: 2026-04-04

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