# Setting certain colours to transparent

**URL:** <https://forum.kirupa.com/t/setting-certain-colours-to-transparent/102458>\
**Category:** Uncategorized\
**Created:** [February 24, 2004, 3:12am UTC](https://forum.kirupa.com/t/setting-certain-colours-to-transparent/102458 "2004-02-24T03:12:05Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Sin](https://avatars.discourse-cdn.com/v4/letter/s/258eb7/32.png) [@Sin](https://forum.kirupa.com/u/Sin)\
**Post date:** [February 24, 2004, 3:12am UTC](https://forum.kirupa.com/t/setting-certain-colours-to-transparent/102458/1 "2004-02-24T03:12:05Z")

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When I first started making websites on my Mac 4 years ago, one of the things that you could do to imported gifs was to set a certain colour to be transparent. This ment that if you wanted to insert a picture of a donought you would drar a poicture of a donought with a pink backgound. When you inserted the donought into the webpage you selected the gif and set all instances of the colour pink to transparant.

I have several flash movies (animations) that involve round and hollow objects. When I draw them in photoshop I have a transparent background but when I copy them to Flash, all the transparent sections turn white. Is it possible to turn those section of the pictures back to transparent and would I have to do it to each individual keyframe or is there some way I can just say that everything that is white becomes transparent.

Cheers,  
Carl

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**Author:** ![system](https://canada1.discourse-cdn.com/flex011/uploads/kirupa/original/3X/6/2/621e5c11736f46532526e61be85940af4230f3e5.png) [@system](https://forum.kirupa.com/u/system)\
**Post date:** [February 24, 2004, 3:44am UTC](https://forum.kirupa.com/t/setting-certain-colours-to-transparent/102458/2 "2004-02-24T03:44:23Z")

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when you publish the photos in PS, set the file type to .png instead of .jpg or .gif. to keep the transparancey 😏