why .webp larger than .png?

Question

why .webp larger than .png?

I Used ABIC program to convert png -> webp. But some of files are larger than origin png files.

.webp file web file

origin png file

And diff-res is here.

Two problems:

Why png -> webp come larger?
I don't feel size saving while using webp pics. How can Android compression pic files to get a great effect?

How did you export the image? There's different quality settings that affect the file size. — nbokmans, Feb 14 '17 at 08:37
Instead of using naive file formats, I'd stick with the officially supported ones. — Phantômaxx, Feb 14 '17 at 14:24

score 5 · Answer 1 · edited Jan 22 '21 at 07:26

5

Use -near_lossless 40 on cwebp for best results with PNGs.

edited Jan 22 '21 at 07:26

mega6382

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answered Feb 15 '17 at 03:25

Jyrki Alakuijala

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score 1 · Answer 2 · answered Feb 12 '20 at 14:21

1

From my tests Webp only produces good results when compared to JPG. Against PNG however, it needs twice the filesize to produce a lossless copy. If you really care about pixel perfect (pixel art and the likes) Webp is not a good format at all.

answered Feb 12 '20 at 14:21

Michael Rogers

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score 0 · Answer 3 · answered Jun 16 '21 at 01:45

Sometimes the resulting image can be bigger. It is just a limitation of the WebP algorithm. Especially when the original file is already optimized. Google explains it here

usually when converting from a lossy format to WebP lossless or vice versa. This is mainly due to the colorspace difference (YUV420 vs ARGB) and the conversion between these.

why .webp larger than .png?

3 Answers3