In the site, I need to use an image without a background and to have a high loading speed of the site. Which extension to choose?

Question

HTML

Ps png is not an option. he lies a lot.

Answer 1

https://compressor.io/
https://kraken.io/web-interface
What does lag mean? Have you tried saving for the web and compressing fine?
Other than png, other normal formats don't support transparency.
There is transparency in GIF, PNG, BMP, TIFF, JPEG 2000, while they will all be fatter than png, and the latter is not supported anywhere.
https://caniuse.com/#feat=jpeg2000
webp is also not supported everywhere
https://caniuse.com/#search=webp
It is also possible in svg, but if you have a complex picture there, then it is not an option.

Answer 2

.webp?

Answer 3

1. jpg2000 (aka jpg2)
2. webp

Answer 4

Nothing is better than PNG.
For compression, I recommend the tinypng.com service.
You can also get an API there, and then screw it to Gulp to automatically compress all images when saving to a folder