One thing I love about Google images is that it states the resolution with every image you click on. Also depends on the size of the final print. You are making a great point that you have to pay attention to resolution. In fact, I find that there are loads of higher Rez images but you have to note them and be aware of this fact. It’s not as bad as it used to be when you designed for dialup instead of broadband. Although one issue is that it’s designed for mobile so that sends it back small. A good page will have mobile and computer versions.
But I digress: @Xabbess, there are three settings that require three numbers.
Try this (although YMMV because of tube realities)
First click on the operation in the left column.
Click Convert to manual engrave.
Then put 1% (edited) in the power and 335 in the inches per minute. Then click the third field and scroll through the drop down until you see 340. Maybe go with few lines.
Then click anywhere outside the pop up. You won’t hurt the Glowforge doing these settings. When I first got a Glowforge I was hesitant about using custom settings. Since I was the only one really posting about it I didn’t exactly talk about this on the forum. Being a rules and regs person always coloring in the lines, I kept it quiet since I felt that not using the defaults was not being loyal to Glowforge. Irrational yes.
When @karaelena and @takitus started cranking things out I was much emboldened by their willingness to push the boundaries.
So just start clicking!