I cant export as png 24

[Jacob Pacheco]

Hello, i just made a header design for a twitter account, the size is 1500x500px and set with a transparent background, but for whatever reason when i try to export the file into a png 24, it only give me the option of png, and png 8 dithered. this causes my artwork to look extreamly blurry and low res. when i post it online. please help me with this issue.

[Joachim_L]

There are two options, default - simply called PNG - is the PNG 24 option.

[walt.farrell]

It's important to understand that a Preset name (e.g., PNG-8 (Dithered), PNG) is simply a name for a bunch of options that you can see and modify by pressing the More... button.

The PNG preset has a default File Format of PNG and a default Pixel Format of "Use document format". With those settings, if you have an 8-bit document you'll get either the PNG-24 output file format or (I think) the PNG-32 format if you have document transparency enabled. If you have a 16-bit document you'd get either PNG-48 or (I think) PNG-56 (with transparency).

[R C-R]

There are only two options because pixel color data in the PNG file format can only be stored directly as the actual per-pixel data or indirectly as an indexed color palette.

The blurriness is probably caused by rasterizing the file's content but without seeing how much of what kind of content it includes, it is impossible to say for sure what is causing it.