There's one real bug where Illustrator doesn't handle opacity masks correctly, but otherwise it's been really reliable about displaying correctly. However, in

There's one real bug where Illustrator doesn't handle opacity masks correctly, but otherwise it's been really reliable about displaying correctly. However, in the past 10 years or so, a bunch of Photoshop functionality has been added in to Illustrator, and none of it is compatible with SVG. So, there are various and warnings and workarounds for drop shadows etc. But, Illustrator has good support for SVG effects, so drop shadows in particular are pretty simple to use. The long term goal is to create really clean SVG/HTML hybrid code with a new program, but I still have to write it! --- There's also an issue where SVG's are slower to animate because they don't use hardware acceleration, but my understanding is that this is coming soon.