Add Image Uploads to Your App in 15 Minutes Using ImageUpload.app API

November 1, 2025

This content originally appeared on DEV Community and was authored by cond

Need image uploads for your app, but don’t want to deal with S3 buckets or CORS headaches?
Here’s a lightweight, production-ready way to get it done fast.

Step 1: Get Your API Key

Sign up and grab your API key from ImageUpload.app.

Step 2: Frontend Integration

<script src="https://imageupload.app/imageupload-sdk.min.js"></script>
<script>
  const uploader = new ImageUploadApp('YOUR_API_KEY');
  uploader.upload(fileInput.files[0])
    .then(res => console.log('Image URL:', res.url))
    .catch(err => console.error(err));
</script>

Step 3: Backend Example (Node.js + Express)

import express from 'express';
import multer from 'multer';
import fetch from 'node-fetch';
import fs from 'fs';

const upload = multer({ dest: 'uploads/' });
const app = express();

app.post('/upload', upload.single('image'), async (req, res) => {
  const form = new FormData();
  form.append('images', fs.createReadStream(req.file.path));
  const response = await fetch('https://imageupload.app/api/1/upload', {
    method: 'POST',
    headers: { Authorization: `Bearer ${process.env.IMAGEUPLOAD_KEY}` },
    body: form
  });
  const data = await response.json();
  res.json({ url: data.data.url });
});

Features