The format actually has a lot of benefits - it supports transparency, animation, and compresses very efficiently. So it could theoretically replace GIF, JPG, and PNG in one fell swoop.

The downsides are that many apps don't currently support it and that it's owned by Google.

Personally I use webp for images that are not intended to share (e.g. banners and images on my blog), but stick to JPG/PNG for sending to other people.

You only dislike it because whatever bad app you're using to share them on doesn't support them.

Stop being the gullible fool and start hating the apps not the file format.

Edit: I also spot your .gif favouritism in there. .gif is an archaic and wasteful format, and asking for it is the same as looking at your car and whining that the fuel has no lead.

You would like it if you had slow internet, or you hosted a website.

My website turned 5MB images into 100KB images using webp. My website now loads instantly, saves you bandwidth, and me costs!

Webp is a fairly standard if rather new image format, that are frequently used by websites due to their small file size. To further cut bandwidth costs and loading time, websites will often only include a tiny webp of an image until you click to expand or something like that, so that they don't have to serve a massive image if the user will only even see a thumbnail sized preview. However, this does break the "save image" button as if you try to download the thumbnail, say from google images.

Completely separately, some scummy sites will make you sign up for an account or something to download a full size image, and the only advice I have here is that it is almost always faster to find another site with the image then jump though the hoops.

It's just a new picture format that is arguably better than jpeg in many scenarios. It has been around for many years. Windows just refuses to do file associations correctly, so people hate it for no reason.

Webp is an image format.

Jpg is ancient, and gif, holy shit gif is from stone age.

I dunno, if you're playing a video, you probably want x264 or better these days, no? For music, we use some variant of mp4 or lossless at this point.

Yet with pictures, for some reason we insist on the old shitty stuff.

Using jpeg or gif is like using mp1 for music and VideoCD for video. Come on now.

The only problem with webp is that there's quality loss if you convert an already compressed jpeg into webp with high compression rate, like some web sites do. That can suck, but I don't know how else to get people to use more modern formats. Otherwise we'd be using ancient formats into the 24th century.

It's a image format with extremely good compression that's tiny doesn't look bad. As someone who had shitty internet for years I definitely welcome them but as usual with Googles inventions they push it on to everyone and let other browsers catch up.

WebP is awesome (JPEG-XL is awesomer though). It compresses better than JPEG which was introduced 30(!) years ago. It's time for JPEG to go away.

I didn't know this either.

"Google launched the WebP format as part of its mission to make loading times faster across the internet. WebP allows websites to display high-quality images — but with much smaller file sizes than traditional formats such as PNG and JPEG."

Here's a Firefox extension that adds right-click context menu options to save the webp as PNG or JPEG:
https://addons.mozilla.org/en-US/firefox/addon/save-webp-as-png-or-jpeg/
and its GitHub page:
https://github.com/jscher2000/Save-webP-as-extension

Makes it a bit easier than downloading the webp and converting it.

Why do so few apps (besides browsers) seem to support it? E.g. Win10 photo viewer and seemingly all my messaging apps

The format itself sounds good, and I see it everywhere online, but is there some reason it's unsupported?