How to enable blur for only specific windows?

[xdevs23]

Most windows are opaque and some transparent windows may preferably not have a blurred background (like certain splash screens). I would like to only enable blur for specific classes, like the terminal and wofi but leave the rest without blur.

I have already tried using a windowrulev2 with noblur and negative lookahead in the regex but that did not do anything.

How can I achieve this?

[master3590]

windowrule = noblur,^(firefox)$ # disables blur for firefox
https://wiki.hyprland.org/Configuring/Window-Rules/

Sorry for the late reply, I was just researching about this and found the solution.
I hope it helps you out

[xdevs23]

Sadly this is not the solution as it only disables blur for specific cases but does not allow enabling blur for specific cases (only opt-out, not opt-in)

[cr4sh-me]

Maybe this is what you're looking for
decoration {
active_opacity = 1.0
inactive_opacity = 1.0
fullscreen_opacity = 1.0
...}

[KoyeBosh]

You can use regex to match everything except the things you want to blur. Here is the snippet that I use:

windowrule = noblur,^(?!(neovide|foot|whatever else))

You can expand this rule to include as many programs as you'd like.

[xdevs23]

Can we do this using windowrulev2 ?

[MysticBytes786]

yes, here's an examples

# this will remove the blur when visiting specific websites
windowrulev2 = noblur, title:^(.*(Twitch|YouTube|Plex|Udemy|Figma)).*(Firefox).*$ 

windowrulev2 = noblur, class:^(virt-manager)$,title:.*(on QEMU).*

[deepanchal]

I had the same issue and I had to enable ignore_opacity option in decoration:blur (https://wiki.hyprland.org/Configuring/Variables/#blur)

blur {
  enabled = true
  size = 8
  passes = 2
  new_optimizations = yes
  ignore_opacity=true
}

Then, setting opacity for apps would also enable blur (ex. opacity 0.8, initialTitle:^(Spotify.*)$)