My experience of social media is extremely limited, but I have occasionally been asked by a group to send them an image for use on their media. Sometimes as non-technical people only used to mobile phone images they have failed to upload the pictures or butchered them in an effort to do so.
In darktable I have presets that I use for exporting files for different uses.
The settings I can imagine include (there may be more):
- pixel dimensions (ppi, file size)
- file type (png, jpg, tiff, etc)
- compression level (for smaller file size and less chance of reproductions)
- colour profile (sRGB, AdobeRGB, etc)
- styles (for adding modules to the pipeline - perhaps a crop, watermark and border)
I was thinking along the lines of this guide for twitter which shows how the images are used, their aspect ratios and file size limits:
The ideal image size and aspect ratio are 1200px X 675px and 16:9, respectively. The maximum file size is 5MB for photos and animated GIFs. You can go up to 15MB if you’re posting via their website.
You can tweet up to four images per post. Two images will appear stacked side by side, both with an aspect ratio of 7:8.
What settings are optimal / most useful for the various platforms?