✓ Development: Image Download Single Chart

[sosiology]

Implement the image download for a single chart

Design Task: #1927

[bprusinowski]

@sosiology @KerstinFaye the feature can be reviewed here: #1931

[sosiology]

@bprusinowski Thanks for this! While testing on TEST i noticed that if the chart image is downloaded from the published page "Created with visualize.admin.ch" appears 2x on the exported image. If the image is downloaded from the editor mode, it only shows up 1x.

Examples

1. Bar Chart: https://test.visualize.admin.ch/en/v/Md9KZ3H4AipE?dataSource=Prod
   

2. Bar Chart with Standard Error: https://test.visualize.admin.ch/v/KDrVsrnKFJlR?dataSource=Prod
   

Screen Recording 2025-01-08 at 11.38.15.mov.zip

@KerstinFaye should we include the option to download the image directly from the user profile in the "actions" menu?

[bprusinowski]

@sosiology thanks for noticing this, I'll take a look! A small note: to make a screenshot we actually have to "see" the chart rendered on a page, which would make it a bit tricky to enable the button here, as we'd need to open the chart preview, make a screenshot and close it (more or less 😅).

[sosiology]

@bprusinowski thanks for the explanation - makes sense that the chart needs to be visible to download the image. Due to the technical complexity - I would not include the chat image download in the user profile for now - but maybe something to think about in future.