Looked at Jolla native browser: Could not find any way to select Text.

Webcat:
1) Use a LONG press on a piece of text
Result 1) Text gets sort of highlighted with a blue border. This selection is copied to the clipboard and can be pasted where you want it.

2) Tap the highlighted text.
Result 2) Highlighted text gets displayed in a separate window. You have the option Copy or Cancel.

3) Tap on the text.
Result 3) The window the text is shown in activates (keyboard appears).

4) Long press a word and expand the highlighted parts at will and select the option Copy.
Result 4) BUG: The selected words should be copied to the clipboard which you can use to paste where you want it.
However the Copy option does not function correctly in this instance. It only works the first time you use it during a Webcat session.

Webpirate:
Basically the same steps except the Copy function does work!
1) Use a LONG press on a piece of text
Result 1) Text block gets displayed in a separate window. You have the option Cancel or Done. Nothing is copied to the clipboard yet.

2) Tap on the text.
Result 2) The window the text is shown in activates.

3) Long press a word and expand the highlighted parts at will and select the option Done.
Result 3) You have copied the selected words to the clipboard which you can use to paste where you want it.

Have not looked at text formating yet but I hope this helps.
Regards n900user259