imageslinksslack
Whenever you post a link to Notion into Slack etc, the image that unfurls is always this: 
Is it possible to change the image used in Notion for link unfurling? Ideally it would either be the image selected for the page cover, or the first image in the page.
Tech stuff – in the Notion html head, this is what needs to change <meta property="og:image" content="https://www.notion.so/images/meta/default.png">.
No. It is not possible to use special formatting in Facebook Photos.
Consider using a url shortener and vanity name for your links if you do not like the way they are presented.
e.g shrt.io/test
Otherwise, use Facebook Notes instead.
Update: since May 2014 it is now possible to edit the date and time for individual photos on Google+.
By heading to the photo details pane in the lightbox, you'll notice that the data next to "Date taken" is now clickable. When pressed, you are greeted with a popup in which you can edit the date and time stored in the photo's metadata.
Otherwise you can use Picasa: https://support.google.com/picasa/answer/160761?hl=en
You can use Picasa to adjust the date and time of your photos and videos. Follow these steps:
- Select the photos that you'd like to adjust. You can only adjust photos or videos from one folder or album at a time.
- In Picasa, click Tools > Adjust date and time.
- In the 'New photo date:' section, enter the new date and time. If adjusting multiple photos at once, choose whether you'd like to adjust all photo dates by the same amount of time or set them all to the exact same date and time.
- Click OK to finish.
Best Answer
While this is not something that already exists AFAIK, one can make an app that listens for URLs from notion.so, and calls chat.unfurl API with the relevant images/blocks in response.
Slack lists a sample application on their github that works for flicker URLs.