Barcode Generator — qr.cornelltech.ca

Features

Everything you need

From a simple URL QR code to a custom-styled Data Matrix with your logo embedded.

🎨

Full Style Control

Custom colors, radial/square/horizontal gradients, 6 module shapes, and adjustable quiet zones.

🖼️

Logo Embedding

Upload a PNG, JPEG, or WebP logo to embed in the center of any QR code. Pillow re-encodes it for safety.

📐

Vector Export

Download as SVG, PDF, or EPS for print-ready output at any resolution — not just raster PNG.

⚡

REST API

POST to /api/generate for full control, or embed a one-liner GET in any <img src=>.

🌐

10 QR Data Types

Dedicated forms for URL, vCard, WiFi, Email, SMS, Phone, Location, Calendar, Text, and Bitcoin/Ethereum.

📊

Usage Dashboard

Live stats — daily generation counts, breakdowns by type, API vs web, and per-user history.

🔒

Secure by Design

Google OAuth gate, rate-limited API, Pydantic strict validation, and all logos re-encoded server-side.

🧩

Exotic 2D Codes

Data Matrix, PDF417, and Aztec Code via treepoem — used on boarding passes, driver's licenses, and medicine.

🔧

Error Correction

Choose L / M / Q / H error correction. Level H (30% redundancy) is enforced automatically when a logo is embedded.

Supported Formats

Every barcode type you need

From QR codes to Code 128 to exotic 2D symbologies.

QR Code

Data Matrix

PDF417

Aztec Code

Code 128

Code 39

EAN-13

EAN-8

UPC-A

ISBN-13

ISBN-10

ISSN

2D codes highlighted · 1D barcodes also support custom foreground/background colors and SVG output

Developer API

Embed anywhere in one line

A full REST API plus a GET shortcut for dropping QR codes directly into emails, docs, and dashboards.

🔗

GET shortcut — inline images

Drop a QR code into any <img src>, Markdown doc, or Slack message with a single URL.

📦

POST — full control

JSON body with all style options: shape, gradient, logo, error correction, output format, and size.

📈

Stats endpoints

Query aggregate generation counts, by-type breakdowns, and per-user history.

# Quick embed — just a URL param
<img src="/api/qr?data=https://example.com
  &color=6366f1&shape=rounded&size=256"/>

# Full POST for max customization
curl -X POST /api/generate \
  -H 'Content-Type: application/json' \
  -d '{
    "type": "qr",
    "data": { "format": "wifi",
      "ssid": "MyNetwork",
      "password": "secret",
      "security": "WPA" },
    "style": {
      "module_shape": "circle",
      "color": "#6366f1",
      "gradient": { "type": "radial",
        "end_color": "#22d3ee" },
      "error_correction": "H" },
    "output": { "format": "svg" }
  }' --output wifi.svg

Generate any barcode or QR code in seconds