tab thumbnail

[partz]

Is there a way to change the tab thumbnail for a text with the name of the archive, something like the example.

Usually have to work with images that look the same in the thumbnail, so a text would be better for me.

example:
   

[rich2005]

Not a bad idea but what criteria is used for name.  For readability and size of tab the name has to be a sensible length. 4 or 5 characters. That makes most of my images from camera have the same name, p1010 The current open image file name is shown in the Gimp window, alas not a solution to your many very similar tab icons.

I would suggest a hover over 'hint' as this:

   

Whatever the requirement, it is the Gimp developers (none on this forum) who implement any change. 
You need to ask on  https://gitlab.gnome.org/GNOME/gimp/-/issues  where you can tag as 'enhancement'. 
Do not hold your breath, I got knocked back recently on re-raising a 12 year old un-fixed bug.