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SVG Images API Service

A simple and clean API service for uploading and fetching SVG images that you can use in any of your projects.

Technologies Used

Node.jsExpress.jsJavaScriptMulterCORSREST APIFile SystemNetlify

Created on August 2, 2025

Project Vision

The SVG Images API Service provides a simple yet powerful solution for managing SVG images across different projects. This lightweight API service enables developers to easily upload, fetch, and manage SVG files with proper validation and CORS support, making it perfect for icon management and dynamic image serving.

Key Features

📤 Image Upload System

  • SVG file upload via REST API
  • File size validation (5MB maximum)
  • SVG format validation
  • Automatic timestamp-based naming to prevent conflicts
  • Secure file handling with proper error responses

📋 Image Management

  • List all uploaded SVG images
  • Get detailed information about specific images
  • Delete images when no longer needed
  • Direct URL access for easy integration

🌐 Cross-Origin Support

  • CORS enabled for cross-origin requests
  • Easy integration with any frontend framework
  • Direct image serving for HTML <img> tags
  • RESTful API design for consistent usage

Technical Implementation

API Endpoints

The service provides a comprehensive set of endpoints for image management:

// Upload endpoint
app.post('/upload', upload.single('image'), (req, res) => {
  if (!req.file) {
    return res.status(400).json({
      success: false,
      message: 'No file uploaded'
    })
  }

  const fileInfo = {
    filename: req.file.filename,
    originalName: req.file.originalname,
    size: req.file.size,
    url: `${req.protocol}://${req.get('host')}/images/${req.file.filename}`,
    directUrl: `${req.protocol}://${req.get('host')}/images/${req.file.filename}`
  }

  res.json({
    success: true,
    message: 'SVG image uploaded successfully',
    data: fileInfo
  })
})

Server Architecture

  • Express.js Backend: Lightweight and fast server setup
  • Multer Integration: Efficient file upload handling
  • File System Storage: Local storage with organized file structure
  • CORS Configuration: Cross-origin resource sharing enabled
  • Error Handling: Comprehensive error responses and validation

Frontend Integration Examples

The API can be easily integrated into any project:

HTML Usage:

<img
  src="https://ccimageapi.netlify.app/images/your-filename.svg"
  alt="Icon"
  width="32"
  height="32"
/>

<!-- Theme-based usage -->
<img
  src="https://ccimageapi.netlify.app/images/tech-stack-typescript-light.svg"
  alt="TypeScript light icon"
  className="hidden [html.light_&]:block"
/>

JavaScript/React Integration:

// Fetch available images
const fetchImages = async () => {
  const response = await fetch('https://ccimageapi.netlify.app/images/list')
  const data = await response.json()
  return data.images
}

// React component
function TechIcon({ technology, theme = 'light' }) {
  const imageUrl = `https://ccimageapi.netlify.app/images/tech-stack-${technology}-${theme}.svg`

  return (
    <img
      src={imageUrl}
      alt={`${technology} ${theme} icon`}
      width={32}
      height={32}
    />
  )
}

API Documentation

Upload SVG Image

  • Endpoint: POST /upload
  • Form Data: image (SVG file)
  • Response: File information with direct URL access

List All Images

  • Endpoint: GET /images/list
  • Response: Array of all uploaded images with metadata

Get Image Info

  • Endpoint: GET /api/images/:filename
  • Response: Detailed information about specific image

Direct Image Access

  • Endpoint: GET /images/:filename
  • Usage: Direct URL for image serving in applications

Delete Image

  • Endpoint: DELETE /images/:filename
  • Response: Confirmation of successful deletion

Development Challenges & Solutions

File Validation

Implementing robust SVG validation required:

  • MIME type checking for security
  • File extension validation
  • Size limit enforcement (5MB maximum)
  • Malformed SVG detection and rejection

Naming Conflicts

Preventing filename collisions through:

  • Timestamp-based prefixing system
  • Original filename preservation
  • Unique identifier generation
  • Conflict detection and resolution

Cross-Origin Requests

Enabling seamless integration across domains:

  • CORS middleware configuration
  • Preflight request handling
  • Header management for security
  • Origin validation for production use

Technical Specifications

Performance Metrics

  • Upload Speed: Sub-second for files under 1MB
  • API Response Time: <50ms average
  • File Size Limit: 5MB maximum
  • Supported Format: SVG only
  • Storage: Local file system with organized structure

Security Features

  • File type validation at multiple levels
  • Size restrictions to prevent abuse
  • Sanitized filename handling
  • Error message standardization
  • CORS policy implementation

Use Cases & Applications

Icon Management Systems

Perfect for managing tech stack icons, UI components, and brand assets across multiple projects with consistent theming support.

Dynamic Image Serving

Ideal for applications requiring on-demand SVG delivery with direct URL access for seamless integration.

Development Workflows

Streamlines the process of managing and serving SVG assets during development and production phases.

Future Enhancements

Planned Features

  • [ ] Authentication system for private image management
  • [ ] Bulk upload functionality
  • [ ] Image compression and optimization
  • [ ] CDN integration for faster delivery
  • [ ] Admin dashboard for better management

Advanced Capabilities

  • [ ] AWS S3 storage integration
  • [ ] Image transformation API
  • [ ] Webhook notifications
  • [ ] Rate limiting and quotas
  • [ ] Advanced analytics and usage tracking

Project Impact

Developer Experience

This API service simplifies SVG management for developers by providing:

  • Easy Integration: Simple REST API that works with any framework
  • Reliable Storage: Consistent file serving with proper error handling
  • Developer-Friendly: Clear documentation and intuitive endpoint design

Real-World Usage

The service has proven valuable in:

  • Multi-project icon management
  • Theme-based image serving (light/dark modes)
  • Development environment asset management
  • Quick prototyping and testing workflows

Community Value

By providing a straightforward solution for SVG management, this project:

  • Reduces development time for asset management
  • Offers a clean API design pattern for similar services
  • Demonstrates best practices for file upload handling
  • Provides a foundation for more complex media services

Deployment & Architecture

Current Setup

  • Hosting: Netlify for reliable and fast global delivery
  • Storage: File system-based with organized directory structure
  • API: RESTful design following standard HTTP conventions
  • CORS: Configured for cross-origin compatibility

Production Considerations

For enterprise use, the architecture supports:

  • Easy migration to cloud storage (AWS S3, Google Cloud)
  • Authentication layer integration
  • Rate limiting implementation
  • Advanced monitoring and logging

The SVG Images API Service represents a clean, efficient solution for modern web development asset management, demonstrating how simple APIs can solve common development challenges effectively.