How to fix a vector so lines are no longer pixalated/jagged

Question

The other day I asked a question here about my lines in Illustrator looking wavy or jagged when they have been rotated. I did receive an answer that helped me realize it was my printer, and when I save my image as a PDF, then print it, the lines are no longer jagged. Phew!

But here is my problem now.

How do I save my image for web and avoid that jagged & wavy problem?
Why is it that my vector image looks fine except for the two rotated lines, even when it's a vector image?

This means that when I save it as a JPG or PNG, it never even had a chance to appear smooth, like the rest of the lines in my image are.

Here is the link to my prior question. It has a lot of screenshots that will clarify more: Rotating Objects/Strokes = wavy edges?

TIA!!

Kurt Gold · Accepted Answer

Just as in your other thread, the answer is pretty simple: It's the nature of raster images on screen and it depends on the rotation angle, the resolution of the image and the resolution of your monitor.

You may do some sample raster images with different ppi settings, go to a local monitor shop that has some high end monitors as well as some older models. Then you can compare what you see on different screens. What you call "jagged" or "wavy" on one screen may be less or even not noticeable on another monitor.

Jacob Bugge · Answer

zf,How about anti alias setting in connexion with your saving to raster formats?Basically the anti alias setting choices are Type Optimized and Art Optimized, obviously best suited for Type (text) and for other artwork and less suited for the opposite.You can choose either as a common anti alias setting for the whole artwork in connexion with Export or Save for Web (& Devices), and in the latter it is hidden away in the Image Size window; if applicable you should tick Transparency (in the main window), of course, especially for artwork with non rectangular outer boundaries etc.

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