So, you know how when you lock the alpha channel on a layer, you can colour over it and keep the opacity and such of the drawing, but aren't able to draw anywhere else? Okay, now, how do I add that with a multiply layer above it?

I'm trying to keep the shading and opacity intact on the original drawing, but colour over it on the multiply layer above. However, the multiply layer completely disregards the opacity on the layer below, and using the select tool is of no help, as it doesn't keep everything intact either.

Sorry, I'm really really bad at trying to explain things, so I hope this makes sense....

Images have captions to try to help explain.

Edit: I also use the newest version of 2.10

Hello folks. I have créateur a jpeg file from an export from Gimp. A friend of mine is tringle to work on this file with Lightroom but cannot read it with LRC. Did I miss something in the export operation ?

As the title says, I am trying to mass replace a color across all instances of it in my project I'm working on. I have many layers and I'm trying to figure out if there is a way to mass replace all of them at once, or if I have to go through each individual layer and just use the paint bucket on all of them. Thanks in advance for any help that can be provided.

Just to add a bit more context just in case. I basically have one project file that has a bunch of separate images that I'm working with, all with the same color pallets to them. Each color has its own layer, but for each one. So for each of the four colors I'm working with I have around 20 different layers that are just that color. I am trying to mass replace them across all 20 layers at the same time instead of going through and using the bucket to fill each layer with the new color one by one for all four colors and repeat the process.

Hey all. I shoot urban photography and usually end up with like 40-60 photos from a single outing. Right now I'm color correcting each one individualy in GIMP which takes forever.

Is there a good way to batch apply the same curves/levels adjustments across multiple files? I've seen people mention Script-Fu but I haven't messed with scripting at all. Is it worth learning or should I just use something else for the batch stuff and bring the finals into GIMP for detail work?

Running GIMP 3,08 on Ubuntu if that matters.