Updated version of qr-image repo that seems to have been abandoned
Re-introduced Pako over zlib
- TBD
npm install qr-gen
Example:
var qr = require('qr-gen');
var qr_svg = qr.image('I love QR!', { type: 'svg' });
qr_svg.pipe(require('fs').createWriteStream('i_love_qr.svg'));
var svg_string = qr.imageSync('I love QR!', { type: 'svg' });
Example For generate images in client side:
var qr = require('qr-gen');
router.get('/qr', function(){
var code = qr.image('http://www.google.com', { type: 'png' });
res.setHeader('Content-type', 'image/png'); //sent qr image to client side
code.pipe(res);
});
then in the html files:
<img src="/qr" alt="qrcode">
qr = require('qr-gen')
-
qr.image(text, [ec_level | options])
— Readable stream with image data; -
qr.imageSync(text, [ec_level | options])
— string with image data. (Buffer forpng
); -
qr.svgObject(text, [ec_level | options])
— object with SVG path and size; -
qr.matrix(text, [ec_level])
— 2D array of booleans. Y is indexed first (e.g.[y][x]
NOT[x][y]
),[0][0]
is the top left, andtrue
means black.
-
text
— text to encode; -
ec_level
— error correction level. One ofL
,M
,Q
,H
. DefaultM
. -
options
— image options object:-
ec_level
— defaultM
. -
type
— image type. Possible valuespng
(default),svg
,pdf
andeps
. -
size
(png and svg only) — size of one module in pixels. Default5
for png andundefined
for svg. -
margin
— white space around QR image in modules. Default4
forpng
and1
for others. -
customize
(only png) — function to customize qr bitmap before encoding to PNG. -
parse_url
(experimental, defaultfalse
) — try to optimize QR-code for URLs.
-