QR Codes Generator API

QR Codes API

The QR Codes API is a lightweight yet powerful REST API for generating QR codes from any text, URL, phone number, email address, Wi-Fi credentials, cryptocurrency address, or other supported data.

Whether you're building payment systems, event applications, inventory management software, authentication systems, digital business cards, restaurant menus, marketing campaigns, or mobile applications, this API enables instant QR code generation without requiring any QR code libraries.

The API supports both raster (PNG) and vector (SVG) formats, allowing developers to create QR codes suitable for websites, mobile apps, print media, labels, posters, and high-resolution graphics.

Developers can fully customize:

• QR code size
• Error correction level
• Border width
• Foreground color
• Background color
• Output format

The API is stateless, fast, scalable, and suitable for production environments.

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Features

• Generate QR Codes from any text
• Encode URLs
• Encode phone numbers
• Encode email addresses
• Encode SMS links
• Encode Wi-Fi credentials
• Encode payment information
• Generate PNG images
• Generate SVG vector graphics
• Custom foreground color
• Custom background color
• Adjustable module size
• Adjustable border
• Error correction support
• REST API
• API Key authentication
• Fast response times
• Production-ready
• No SDK required

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Supported Output Formats

Format	Description
PNG	Raster image suitable for websites, apps, social media and documents
SVG	Vector image suitable for printing and scalable graphics

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Use Cases

Perfect for:

• Mobile applications
• Websites
• Digital menus
• Restaurant ordering
• Event tickets
• Boarding passes
• Business cards
• Marketing campaigns
• Product packaging
• Inventory management
• Asset tracking
• Authentication systems
• Two-factor authentication
• Contact sharing
• Payment QR codes
• Cryptocurrency wallets
• IoT devices
• Education platforms
• Healthcare applications

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Endpoints

Generate PNG QR Code

GET

/qr

Returns a PNG image.

Parameters

Name	Type	Required	Description
data	string	No	Text or URL to encode
scale	integer	No	Module size in pixels
border	integer	No	Quiet zone border size
error	string	No	Error correction level (L, M, Q, H)
dark	string	No	Foreground color (6-digit hex)
light	string	No	Background color (6-digit hex)

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Generate SVG QR Code

GET

/qr.svg

Returns a scalable SVG file.

Supports the same parameters as the PNG endpoint.

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Parameters

data

The content to encode.

Examples

https://example.com

Hello World

mailto:[email protected]

tel:+15551234567

WIFI:T:WPA;S:OfficeWiFi;P:password123;;

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scale

Controls the size of each QR module.

Example

4

Larger values generate larger images.

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border

Controls the quiet zone around the QR code.

Example

4

dark

Foreground color.

Example

000000

FF0000

0033CC

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light

Background color.

Example

FFFFFF

FFFFAA

Example Request

GET /qr?data=https://routexapi.com&scale=8&border=4&error=H&dark=000000&light=FFFFFF

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Example SVG Request

GET /qr.svg?data=Hello%20World

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Response

The API returns the generated QR code image directly.

Content Types

PNG endpoint

image/png

SVG endpoint

image/svg+xml

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Performance

• Low latency
• Lightweight responses
• Stateless architecture
• High availability
• Suitable for serverless deployments
• CDN-friendly
• Optimized for high request volumes

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Best Practices

• Use SVG when printing QR codes.
• Use PNG for websites and mobile applications.
• Choose error correction level H when placing logos over QR codes.
• Keep sufficient border (quiet zone) around the QR code.
• Use high contrast between foreground and background colors.
• Avoid overly small module sizes for printed materials.

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SDK Compatibility

Works with every HTTP client including:

• JavaScript
• TypeScript
• Python
• Go
• Java
• C#
• PHP
• Ruby
• Swift
• Kotlin
• Rust
• Dart
• cURL

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