Note: i’ve changed a few of my keyboard shortcuts, so yours might not be identical; as such, I tried to avoid them as much as possible! 

first of all, useful GIMP navigation shortcuts:

ctrl+R = reset view

scroll wheel = scroll up/down

shift+scroll wheel = scroll left/right

ctrl+scroll wheel = zoom in/out

and tools we’re gonna use:

and finally, the how to:

1. open the page with your panel in GIMP or copy-paste it in, and save your project

2. use the crop tool (shift+C or yellow above) to select the area around what you want to render, then click on that area to crop it

3. click your foreground color (in blue above) and change it to any color you like

4. create a new layer (either by going to Layer>New Layer or Ctrl+Shift+L), and make sure “foreground color” is selected, then click OK

5. drag your new layer below the manga panel layer on the right, then select your manga panel layer again so that it’s highlighted in blue

6. click the little squares (indicated in purple above) to reset your fg/bg colors, then the arrows (in green above) to switch them so that white is your foreground color

7. Layer>Transparency>Color to Alpha, make sure it’s set to pure white (it should be by default) and hit OK 

8. Layer>Mask>Add Layer Mask, make sure “White (full opacity)” is selected and click OK! This creates a “layer mask”, which basically lets you erase without permanently erasing

(you should probably save here)

9. Click the lasso tool (in red above) and start carefully clicking points to outline the spot you want to render. You don’t have to be as precise as I am (I’m really anal about it), but notice what spots i’m cutting out:

you also might need to cut out certain spots, but I’m a complete idiot and used keyboard shortcuts for this in the video so here’s how you do it:

I made a note of it in the video itself, too! Also, I don’t know if Feather Edges is on by default, but if it is, TURN IT OFF IMMEDIATELY. it’s the absolute worst just trust me

(you might wanna save again)

10. Select>Invert (Ctrl+I) and hit the DEL key, then Select>None (Ctrl+Shift+A)

11. Right click on your layer>Duplicate Layer, right click>Apply Layer mask, right click>duplicate layer (again), & hide the bottom version (the one that still has the layer mask) by clicking the eyeball- it’s just there to be a backup

12. select the top layer and then go to Layer>Transparency>Threshold Alpha, i usually set it to about 123-127 but you may want to go lower; a higher number means it’ll be sharper, but you may have holes in the outline you’ll need to fill in

13. click this little icon to lock the layer:

then Ctrl+F to fill with white, then that little icon again to unlock the layer

14. use the magic wand tool on the area that’s going to be transparent, using Add to Selection if needed, invert the selection, and Ctrl+F to fill with white (NOTE: if there are gaps you’ll need to either fill them or go back and do it again but with a lower threshold for threshold alpha. You can see me do the former in this one) 

15. drag the white layer below your other visible copy, crop how you like, and you’re done! I recommend exporting two versions: one with the colored background visible, and one without it. make sure they’re .png files too! 

congrats friend u just made a transparent render like a pro

that got a bit wordy but don’t worry, it’s really not that complicated! It took me longer to write this than it did to make the render pffft