Without Photoshop, can I eliminate lines in a photo I took?

Amateur model builder. Built a WW II airplane model, suspended it from some very thin monofilament and took some cool pictures of it against the sky. But, of course, the mono showed up. If I could find a way to erase those little white lines against the blue sky, I’d have a winner - a number of them. I just have no clue how to do that with old Win 10 and no special software to go with it. Am I destined to just accept my limitations? Or can I get around the problem somehow? If the Dopers can’t help, of course, no one can. Thanks ahead of time. xo,
C.

Assuming you’re OK with editing software, just not Photoshop, Google Photos has some editing tools that might allow you to fix it. GIMP is free software that would allow you to fix the photos (with tons of online guides and help). Paint3d is built into Windows, I think, and allows for some fixes.

I can do them in a “click” with Luminar Neo, if you send them to me.

If the background is fairly consistant, the spot fix tool should clean it up nicely.

I like LaMa Cleaner for this purpose; should be a Web version here:

you can run it yourself, too

DPRK - Great recommendation! Thanks. It did exactly what I needed and it was extremely easy to figure out. Great find. I knew I could count on the SDMB. Wow.

Just want to suggest that there may be another way that doesn’t require any editing. It’s possible that they may become invisible if you take the photo from a different angle or different time of day when the sun is coming thru the window at a different angle/not at all. IOW, it’s possible a change in lighting could make them invisible.