# File compression

**URL:** <https://forum.kirupa.com/t/file-compression/84620>\
**Category:** Uncategorized\
**Created:** [March 29, 2005, 5:50am UTC](https://forum.kirupa.com/t/file-compression/84620 "2005-03-29T05:50:46Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![zaheerkaisar](https://avatars.discourse-cdn.com/v4/letter/z/c6cbf5/32.png) [@zaheerkaisar](https://forum.kirupa.com/u/zaheerkaisar)\
**Post date:** [March 29, 2005, 5:50am UTC](https://forum.kirupa.com/t/file-compression/84620/1 "2005-03-29T05:50:46Z")

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hi, i haf a question.

Say i have a jpeg which is only 17kb and a png at 247kb.

Both files have similar document size,resolution and etc. Just different file format.

I import both files into flash and create only 1 keyframe. No animations just still image.

When saved as jpeg.fla, the file size is 144kb and the png.fla is only 57kb. When i publish both flas, both have the same size which is only 17kb. Why is this so? It’s kinda confusing cause you have a small jpeg but it generates big fla size while u have a big png and it generates a smaller fla size.

How do u actually maintain quality and at the same generate a smaller swf file? and what is the best file compression to use? jpg?gif?bmp?png? ohhh confusing. Appreciate if someone could answer this. Thanks a lot, haf a good day.