qr code

Generate QR codes from any text or URL. Download as SVG or PNG, or copy the SVG markup directly.

Overview

Enter any text or URL in the input field and a QR code is generated in real time as an inline SVG. The SVG uses the tool's color scheme by default. PNG downloads render on a standard white background for maximum scanner compatibility.

Error correction levels

Level	Recovery capacity	Use when
L	~7%	Clean environments, smallest code
M	~15%	General use (default)
Q	~25%	Industrial or printed applications
H	~30%	Maximum resilience, logo overlays

Higher error correction increases QR code density (more modules, larger image).

Export options

Download SVG — vector file, scales to any size without quality loss
Download PNG — 512×512 raster image on white background, ideal for sharing
Copy SVG — copies the raw SVG markup to your clipboard for embedding in HTML or documents

URL parameters

?value=<encoded-text>&ecl=<L|M|Q|H> — pre-fills the input and error correction level. Useful for sharing or bookmarking specific QR codes.

API

GET /api/qr returns the QR code as an image/svg+xml response — suitable for use in <img> tags or anywhere an image URL is accepted.

Parameter	Required	Default	Description
`value`	yes	—	Text or URL to encode
`ecl`	no	`M`	Error correction level: `L`, `M`, `Q`, or `H`
`dark`	no	`#000000`	Hex color for dark modules (include `#`)
`light`	no	`#ffffff`	Hex color for light modules (include `#`)

Examples:

/api/qr?value=https%3A%2F%2Fhypothesis.sh
/api/qr?value=https%3A%2F%2Fhypothesis.sh%2Fqr&ecl=H
/api/qr?value=https%3A%2F%2Fhypothesis.sh&dark=%23ff0000&light=%23f5f5f5

<img src="https://hypothesis.sh/api/qr?value=https%3A%2F%2Fhypothesis.sh" alt="QR code" />

Responses are cached for 24 hours (Cache-Control: public, s-maxage=86400). Color values must be 6-digit hex codes — shorthand (#fff) is not accepted.