Pdfkit: Auto-size page from image

Created on 6 Apr 2018 · 4Comments · Source: foliojs/pdfkit

Would it be possible to add an option to grab width and height from an image and _then_ doc.addPage(x: 0, y:0, width: myImageWidth, height: myImageHeight) ?

PDFKit already reads image size and it would save some complexity (adding image-size dependency)

My use case is adding several compressed scanned JPEGs to a PDF. I'd venture to say auto-sizing the pages is an expected convenience.

Source

akaleeroy

Most helpful comment

You can achieve this with the openImage function added in v0.8.1:

var doc = new PDFDocument({autoFirstPage:false});
var img = doc.openImage(image_path_or_buffer);
doc.addPage({size: [img.width, img.height]});
doc.image(img, 0, 0);

alafr on 7 Apr 2018

👍15 🎉1 😄1

All 4 comments

You can achieve this with the openImage function added in v0.8.1:

var doc = new PDFDocument({autoFirstPage:false});
var img = doc.openImage(image_path_or_buffer);
doc.addPage({size: [img.width, img.height]});
doc.image(img, 0, 0);

alafr on 7 Apr 2018

👍15 🎉1 😄1

Thanks for the tip! Unfortunately it's an SVG and openImage throws 'Unknown image format'.

akaleeroy on 7 Apr 2018

SVG images are not directly supported in PDFKit.
There are many packages to convert them to JPEG or PNG.
You can also use SVG-to-PDFKit but it doesn't give the image size beforehand (I plan to change this in the future)

alafr on 7 Apr 2018

👍1

Not available for Typescript. Any idea when it will be?