Ubuntu file manager with more zoom

Question

I want to go over a folder with images and copy some of them to a different folder. I am working on a laptop screen and I want to see the image thumbnails zoomed bigger.

I tried the file managers I know of. Nautilius, Thunar, PCManFM. All of them zoom only to some extent and then stop. For example, the default nautilus only allows me to zoom up to 133%. Dolphin doesn't show preview at all. I remember file managers a few years ago used to zoom much bigger.

Is there any file manager or any setting in one of the above file managers that will allow me to zoom the images like to 2 columns?

Version: Ubuntu 18.04

i am using nautilus as default file manager and it is showing me the option after 133%, 267% https://i.stack.imgur.com/3SGp2.png https://i.stack.imgur.com/0klUS.png — PRATAP, Oct 08 '18 at 08:57
Re. "Dolphin doesn't show preview at all." did you set Previews in Dolphin Preferences? — DK Bose, Oct 08 '18 at 08:57
Few years the zoom was bigger? That probably appeared so, because you had a lower resolution screen. No, unfortunatelly the enlargement is limited. — vanadium, Oct 08 '18 at 09:04
@PRATAP attached screenshot. The plus button is greyed out and unable to click. What version of nautilus are you using? Mine is 3.26.3 — balki, Oct 08 '18 at 09:06
Gnome 3.28.2, recently i have done some changes to nautilus.xml schema but i dont know due to this it is shown 267% or not. i have not checked it whether it is activated before editing nautilus.xml schema or not — PRATAP, Oct 08 '18 at 09:10
@DKBose For some reason Previews is empty and there is no option to add or set anything. Please see attached screenshot — balki, Oct 08 '18 at 09:11
Interesting. It's likely that something, I don't know what, is missing from your system. Because Dolphin on Kubuntu does have a long list to choose from. — DK Bose, Oct 08 '18 at 09:22
I just posted a solution for this question at https://askubuntu.com/a/1097952/100356. (I didn't realize this question was older). — Enterprise, Dec 02 '18 at 17:58
With Caja you can get thumbnails as large as you want : https://askubuntu.com/a/1459134/607630 — ChameleonScales, Mar 13 '23 at 20:41

score 3 · Answer 1 · edited Nov 23 '18 at 12:26

This answer is to address solely

Dolphin doesn't show preview at all.

I have Kubuntu 18.04 and Dolphin is the default file manager. In Configure Dolphin > Dolphin Preferences > General > Preview, one has a choice of what one wants to preview: