JPEG and PDF offline exporting

[ulrik59]

The offline-exporting module is a great tool but unfortunately it only support PNG and SVG. Is there a possibility to add JPEG and PDF support ?
Also, adding offline-exporting module remove JPEG and PDF buttons... Could we add an options to display these buttons even if the exports is not offline ?

[pawelfus]

Internal note:

I am not sure about exporting anything, using JS, to PDF (jsPDF ? looks problematic for SVG), but for JPEG, can we add type canvas.toDataURL("image/jpeg"), ref?

[ulrik59]

I used to export with highcharts-export-clientside and it has PDF support with jsPDF.
Apparently there is a method addImage() where you can give a canvas in arguments but it's not documented...
Maybe add JPEG support and an option to display PDF button (PDF export will be done by the server) ?

[TorsteinHonsi]

• JPEG: We are planning to add that as described by Pawel above. @oysteinmoseng
• PDF: On an earlier occasion we investigated using jsPDF, but as noted above, it has poort support for SVG. The PDF support in "highcharts-export-clientside" is not optimal - it just embeds a raster image into the PDF. In our opinion the point of exporting to PDF is to preserve the vector quality of the SVG graphics, so we didn't go that route. In order to include vectorized PDF support, we would have to either create our own implementation, contribute to jsPDF or look for other similar solutions with SVG support.

Edit: Here's a first draft on vectorized PDF support: http://jsfiddle.net/highcharts/wad3peww/. Key features like group translation, font styling and paths are missing.

@ulrik59 Here's how you can inject a server-based PDF export into the menu items: http://jsfiddle.net/highcharts/cw8j4nva/

[grahamscott]

JPEG: We are planning to add that as described by Pawel above. @oysteinmoseng

Is there a proposed release for this enhancement?

[TorsteinHonsi]

@oysteinmoseng

[oysteinmoseng]

@grahamscott: I'll take a look at it this week, so it should be part of the next official release.

[grahamscott]

ah amazing, thank you 👍

[oysteinmoseng]

Closing this and moving PDF discussion to separate issue.