Qrcode Monkey API

⭐ Beginner's Pick Development / No Auth Required Beginner HTTPS
Free to Use Varies (check documentation)

Overview

QRcode Monkey provides a free API to generate highly customizable QR codes with logos, custom colors, and various dot styles — far beyond the plain black-and-white output of simpler QR APIs. Developers can embed a brand logo in the center, change foreground and background colors, and choose from multiple pixel shapes through a JSON POST body, receiving a PNG image or base64 data in return. No authentication is required for the free tier.

💡

Beginner Tip

No API key is needed for basic QR generation — send a POST request with a JSON body containing at least the "data" field (your URL or text) to get a QR code back. Start with the minimal payload {"data":"https://example.com"} and expand from there by adding "config" options like colors or a logo. The response includes a base64-encoded image you can display directly in an img tag using the data:image/png;base64 prefix.

Available Data

generated QR code image
encoded data string
Qrcode Monkey data via REST API
JSON-formatted response data
Freely accessible without authentication

Example Response

JSON Response
{
  "image_url": "https://api.example.com/qr/abc123.png",
  "data": "https://example.com",
  "format": "png",
  "size": "300x300"
}

Field Reference

imageUrl Public URL to the generated QR code image hosted on QRcode Monkey servers
dataUri Base64-encoded data URI of the PNG image, usable directly as an img src without any download step

Implementation Example

const url = "https://www.qrcode-monkey.com/qr-code-api-with-logo/";
const response = await fetch(url);
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

400 / invalid response when sending logo Logo image URL must be publicly accessible; a private or localhost URL will fail to load
Host your logo on a public server or CDN and pass its full HTTPS URL in the config.logo field
QR code generated but fails to scan Too much customization (extreme colors, large logo) reduces error-correction capacity below what scanners need
Set config.ecc to "H" for maximum correction when using a logo, and keep the logo under 30% of QR code area
CORS error in browser when making POST Direct browser POST to the API may be blocked by CORS if not called from an allowed origin
Route the request through your backend server rather than calling the API directly from frontend JavaScript

Matrix Score Breakdown

🌐 Reachability 30/30
⚡ Speed 20/20
🔒 Security 15/15
🛠 Developer XP 15/20
✓ Reliability 7/15
Response Time 46ms

Fully tested on Apr 5, 2026

Technical Specifications

Auth No Auth
HTTPS REQUIRED
CORS UNKNOWN
Category Development
Difficulty Beginner
Verified: 2026-04-04

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