Image Formats

WebP Format Explained: The Future of Web Images

January 12, 2025
6 min read

Remember the time when everyone claimed that WebP would be "the future" but Safari did not support it and we all stayed with JPG? The good news is that Safari has finally jumped on the WebP bandwagon some time ago and there's no reason not to utilize WebP. Let me share with you the lessons I've learned by converting thousands of images into this format.

What Makes WebP Different

Google invented WebP due to the frustration of JPG and PNG's limitations. They were looking for something capable of doing it all small files like JPG transparent like PNG, as well as animations such as GIF. They managed to pull off the shackle.

Here's What WebP Actually Does:

  • Makes files about 25-35% smaller than JPG at the same quality
  • Gets 26% smaller than PNG for lossless images
  • Handles transparency without the massive file sizes of PNG
  • Supports animation (goodbye oversized GIFs)
  • Works with both lossy and lossless compression - you choose

Why I Started Using WebP

Page Speed Got Better Fast

I switched a client's e-commerce site to WebP and their page load time dropped by about 30%. That's huge when you consider Google uses page speed as a ranking factor. Visitors stuck around longer too - nobody likes waiting for images to load.

Bandwidth Bills Went Down

If you're serving a lot of images (think thousands per day), the bandwidth savings add up quick. We're talking real money here, not just theoretical improvements.

Quality Stayed High

This was my main concern - would the images look worse? In side-by-side comparisons, I honestly couldn't tell the difference most of the time. Sometimes I had to zoom way in to spot any compression artifacts.

How It Stacks Up

Here's the quick comparison that matters:

What You NeedJPGPNGWebP
Lossy (photos)YesNoYes
Lossless (perfect quality)NoYesYes
TransparencyNopeYesYes
AnimationNopeNopeYes
File sizeMediumBigSmallest

Converting Your Images

The conversion process is straightforward. Our tool handles the most common scenarios:

  • PNG to WebP: Great for logos and graphics - you keep transparency but lose the bloated file size
  • JPG to WebP: Perfect for photos - you'll see the biggest savings here
  • WebP to PNG: Sometimes you need the old format back for compatibility

Browser Support (It's Actually Good Now)

This used to be the big pain point. Not anymore. Here's where we stand:

  • Chrome: Supported since basically forever (2010)
  • Firefox: Came around in 2019
  • Safari: Finally added support in 2020 (the holdout)
  • Edge: Works since 2018
  • Mobile: Pretty much all modern mobile browsers handle it

At this point, the only people who can't view WebP are using really old browsers. We're talking Internet Explorer levels of old.

Where WebP Really Shines

  • Online stores: Product images eat bandwidth - WebP cuts that way down
  • Blogs and news sites: Lots of featured images that need to load fast
  • Portfolios: Photographers and designers can show high-quality work without slow loading
  • Mobile apps: Smaller app bundles, less data usage
  • Any site with lots of images: The savings multiply quickly

If You're Building a Website

Set Up a Fallback

While support isn't universal, you are able to offer an JPG backup to that small proportion of users using old browsers:

<picture>
  <source srcset="image.webp" type="image/webp">
  <img src="image.jpg" alt="Description">
</picture>

The browser automatically picks the format it can handle. Modern browsers get WebP, old ones get JPG. Everyone's happy.

Quality Settings Matter

I've discovered that 75-85% of high-quality works well for the majority of photos. You can enjoy huge file size reductions without any visible quality loss. Lower the resolution if you truly want to squeeze every bit However, you should try it on real screens first.

Pick the Right Compression Type

  • Lossy for photos (just like JPG)
  • Lossless for screenshots, diagrams, and graphics with text
  • Test both if you're not sure which looks better

Some Things People Ask Me

"Can Photoshop open WebP?"

Yes, recent versions of Photoshop handle it natively. Older versions might need a plugin. GIMP works too. Honestly, most modern image software does at this point.

"Should I use WebP for print?"

No. WebP is designed for screens. For print work, stick with high-resolution PNG or TIFF. Or whatever your print shop asks for.

"What about AVIF?"

AVIF is even newer and compresses even better. But browser support is still catching up. If you want to be safe, WebP is the sweet spot right now. AVIF might be the next move in a year or two.

More Reading

The Bottom Line

WebP isn't just hype - it delivers real improvements over JPG and PNG for web use. Browser support is basically universal now. The conversion is simple. There's nothing to lose except if you have to enable Internet Explorer (and if you have to we're sorry). Try it with a couple of images and then see the difference in size of files for yourself. It's quite convincing once you've seen these figures.