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Is there a shortcut key to increase or decrease layer transparency, or to add the opacity slider to a layer in QGIS?

I couldn't find one in the existing shortcut key list and I tried loading the transparency file to that list, but it doesn't like the format.

A while back I noticed there Python script that can do something similar, add transparency to new layers imported into the workspace, but I am looking for a simpler tool.

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  • It really needed editing?
    – Nigel Cantwell
    Commented Oct 10, 2020 at 13:25

2 Answers 2

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Credits to @Kazuhito from his answer https://gis.stackexchange.com/a/284797/99589

Try the "Opacity slider" via RMC > Properties > Legend > Embedded Widgets in Legend > Available widgets

Opacity slider

and edit the transparency

result

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  • Thanks very much, I was just looking for something a bit quicker. Cheers
    – Nigel Cantwell
    Commented Oct 10, 2020 at 13:26
  • If it solves your problem please accept it
    – Taras ♦
    Commented Oct 10, 2020 at 15:02
  • I've accepted it now, sorry didn't know I needed to, new to this. I am still hanging out for somebody to show me a quicker way e.g. adding a shortcut key.
    – Nigel Cantwell
    Commented Oct 12, 2020 at 0:37
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This is more a workaround but still can be useful:

Transparency/Opacity can be a tailored globally (all layers etc.) or individually by layer.

This way is by layer:

Layer Styling [Shortcut] is F7 in QGIS.

This can be docked in QGIS for quick access. This then allows the user to pick the slider for any of the layers in the canvas including images/raster's.

This screenshot shows where layer styling is available [or use F7 on the keyboard to bring it up or remove the panel] enter image description here

Windows 10 Pro (QGIS 3.14 used here)

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  • OK, thank you.Looks like this is the way to go for now.
    – Nigel Cantwell
    Commented Oct 10, 2020 at 13:27
  • I see that v3.16 now has increase and decrease as an option in the keyboard shortcuts, which is very nice. However, I think I can only get it working by first clicking on the opacity slider first, and then it increments by 1%, so it's still a bit slow. I love this program and am just being a pain. I must learn how to create a plug-in.
    – Nigel Cantwell
    Commented Mar 27, 2021 at 14:30
  • @NigelCantwell where do you see this option in the keyboard shortcuts? If it was there it would solve this problem, but it's not...
    – 15Step
    Commented Apr 8, 2021 at 8:14
  • I just found it by searching transparency in keyboard shortcuts, and it's really nice to have. It is a solution to the problem, but it only increments by 1%, so still a bit slow.
    – Nigel Cantwell
    Commented Apr 9, 2021 at 9:19

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