PNG snapshots on Safari

[ghost]

Although PNG snapshots are now working again on FF, they still do not work on Safari (at least Version 9.0.3 (11601.4.4))

[etpinard]

Thanks for reporting. This is a known bug.

Only a small percentage of our users use Safari, so this won't be a priority for the plotly.js team in the near future.

[etpinard]

Looking over PR #104 could be a good place to start for this bug.

[etpinard]

Here's why downloading does not work in Safari: http://caniuse.com/#feat=download

[timelyportfolio]

Should I provide an option in downloadImage to open the link instead of download?

[etpinard]

This is how FileServer.js gets it done: https://github.com/eligrey/FileSaver.js/blob/master/FileSaver.js#L110-L119

[mdtusz]

Fixed in #446, then again in #604.

[PPPW]

Dear @mdtusz and @etpinard,
I found that currently downloading works fine in Safari, however another file named "unknown" will also be downloaded. This file is actually exactly the same as the png file. I wonder is this issue easy to fix? Thanks.

[etpinard]

@PPPW please subscribe to #1227 for the latest development info.