Bug 474338

Summary: Base64 conversion for screenshot data
Product: [Applications] Spectacle Reporter: Serg Podtynnyi <serg>
Component: GeneralAssignee: Noah Davis <noahadvs>
Status: CONFIRMED ---    
Severity: wishlist CC: kde, nate
Priority: NOR    
Version First Reported In: 23.08.0   
Target Milestone: ---   
Platform: Other   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:
Attachments: smime.p7s

Description Serg Podtynnyi 2023-09-09 13:39:42 UTC 
From https://invent.kde.org/graphics/spectacle/-/issues/7
```
I would like to suggest adding a button in the "Copy Image to Clipboard" dropdown which copies the base64 of the image to the Clipboard so that it can be easily pasted in things like markdown documents and such.
```
And add an option  in `After taking a screenshot` selection
* Copy image to clipboard (Base64)
Comment 1 Noah Davis 2023-09-09 14:32:09 UTC 
Huh, I've never heard of that. Can you point me to some documentation about how this works? Is this only a feature for a specific flavor of Markdown?
Comment 2 Serg Podtynnyi 2023-09-09 15:06:11 UTC 
Created attachment 161525 [details]
smime.p7s
Comment 3 Serg Podtynnyi 2023-09-09 21:23:17 UTC 
The  format for data is here 
https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/Data_URLs

and it looks like this:

in html:
<img src="data:image/png;base64,iVBORw0KGgoAAA
ANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQI12P4
//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHwAAAABJRU
5ErkJggg==" alt="Red dot" />

in markdown:
![Hello World](data:image/png;base64,iVBORw0KGgoAAA
ANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQI12P4
//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHwAAAABJRU
5ErkJggg==)

so clipboard should have string data starting with data:image/png;base64, 
and ends with(out)  base64  paddings ==

PS
For QT it is something like this https://doc.qt.io/qt-6/qbytearray.html#toBase64
Comment 4 Noah Davis 2023-09-10 22:10:31 UTC 
Doesn't seem like a high priority and it's a pretty advanced user option, but I'll leave this report open.
Comment 5 Noah Davis 2023-09-10 22:19:08 UTC 
You might actually want to look into customizing Klipper (the clipboard applet) actions. You can make Klipper run commands on things you copied to the clipboard and there may be a way to convert images in the clipboard to base64.