Illustrator creats edges that are not there if I export an object

[Malte5C23]

Hi,

I work on a book cover with a background that is made of triangles. If I work in Illustrator the triangles aline perfectly and even if I zoom in as far as I can there is no space between two triangles visible. However if I export it no matter if jpeg, png or pdf, the exportet file happens to have white spaces between some triangles (as seen in the image attached). 

Does anyone know why that happens and how I can solve the problem? 

Thanks in advance, Malte 

[Monika Gause]

These are antialiasing artefacts.

You could try and put a brown object in the background to reduce the effect of the antialiasing.

[Ton Frederiks · Accepted solution]

When exporting as an image, you could try to set the Anti-aliasing option to Art Optimized (instead of Type Optimized).

[Malte5C23]

Thank you very much beutiful sir! Made my day. Even if I checked in 3 years later 🙂

[Ton Frederiks · Accepted solution]

Good to hear that helped (but there are some problems reported with jpeg, but png works fine)