Composite image with black line after export.

[glennpalmer]

I am working on a composite image. The main layer is a jpeg image, 1652X2500. The top layer is a .png file of buildings. This image is cropped by affinity photo.

The exported image contains a black, horizontal line running the full width of the image. It appears to be the top border of the .png file. The transparent section is indeed 

transparent but the border appears to be persistent.

I haven't been able to attach all the files. When I try to attach the main layer, I got the server error. 

Any help would be appreciated.

Ghostly Abodes.afdesign

[Komatös]

The line is in the .png!

I've cleaned out  

Ghostly Abodes.afdesign

[glennpalmer]

Thanks. How did you accomplish this, and why was the line in the png to start with? It wasn't visible in the source file. Is there 

something I need to do when exporting to png to prevent this happening? 

Sorry, I'm a total graphics Noob. 

[Brian_J]

@glennpalmer, Are you saying that in the old western town file, after extracting the building from the background, the dark areas at the top, sides, and tops of the buildings on the right were not visible? Then, after saving the PNG the result was the first image you posted?

Did you do everything in Affinity Designer?

A couple side notes...

If you have Affinity Photo, it's better suited for working with photos.

Rather than saving the western town image as a PNG, I'd recommend either bringing the sky/mountain image into the western town image, or copying the extracted western town image into the composite file. The PNG file format is best used for graphics without so much color variation — photos saved as PNG have an extremely large file size.

[glennpalmer]

Thanks for the answer, Brian.

I removed the background from the town picture using affinity photo. Saving it as a PNG so that it will have a transparent background is simply the only way I've learned so far. It sounds like you are recommending doing the overlay of the town onto the mountain scene in photo as well. That sounds like a much more efficient way to proceed, for sure, and doing that would definitely do away with the black line problem.

I have all three software tools and I'm trying to learn how to use them by watching videos on Youtube. I've only been working with them for a month, so I'm really clumsy, so far.

Thanks again for the reply. I appreciate any guidance that is offered.

[Brian_J]

Glad that helped.

Yeah, if the main focus of your project is photos, Affinity Photo (AP) is your go-to app. Affinity Designer (AD) is best for vector work. But there is overlap between the apps — there's even a Pixel Persona in AD — so there will be times when working with photos in AD or vector graphics in AP is totally appropriate. There are more pixel-related tools and filters in AP, not to mention cropping and resizing documents is easier.

I'm just stumbling out of the clumsy phase myself. 🙂 I switched to Affinity three months ago and have been getting help in this forum and watching YouTube videos like you.

[Old Bruce]

I just used the Pixel Persona in Designer, I had to rasterize the png layer then used the eraser tool in Designer's Pixel Persona.