WebP vs JPEG: Which One Should You Actually Use?
A friend emailed me last week in a mild panic. Her photography portfolio was loading like it was on dial-up, and her host was threatening to throttle her bandwidth. She'd heard about WebP and wanted to know if she should convert everything.
I get this question a lot. So let me save you the hour of googling I once spent on it.
Quick Verdict
WebP wins on file size and features almost every time, and you should use it for anything going on a website. Keep JPEG for photos you're sending to a print shop or emailing to someone with a decade-old computer. If you're optimizing images for the web, convert to WebP and don't overthink it. (Our free image upscaler handles this without the headache.) (If you need a design toolkit, we got you covered.)
Now, the longer version.
What these formats actually are
JPEG has been around since 1992. It's the format your camera shoots, your phone saves, and basically every piece of software on earth opens without complaint. That compatibility is its superpower.
WebP came from Google in 2010. It does everything JPEG does, plus transparency, plus animation. The catch is that it's newer, so ancient software sometimes chokes on it.
Both are lossy formats, meaning they throw away some data to shrink your file. The question is how well they throw it away.
The size difference is real
Here's the number that matters: at the same visual quality, WebP files typically run 25-35% smaller than JPEG. Sometimes more, depending on the image.
That's not a marketing claim. It's measurable. A photo that's 200KB as a JPEG often lands around 140KB as WebP, and you'd have to squint at both side by side to tell the difference.
For a page with ten images, that's hundreds of kilobytes saved. On a slow mobile connection, that's the difference between a page that loads and a page that doesn't.
Where JPEG still wins
JPEG isn't dead, and anyone who tells you otherwise is selling something.
Older browsers, some email clients, and a shocking number of desktop apps still don't handle WebP properly. If you're sending images to a client who opens them in an old version of Outlook, they might just see a broken icon.
Print workflows also lean JPEG. Most print shops want it. WebP wasn't designed for that world.
And honestly? If your images are already optimized and your site loads fine, converting everything is busywork. Don't fix what isn't broken.
Pros & Cons
✅ Pros
- WebP files are 25-35% smaller at matching quality, which directly speeds up your site
- Built-in transparency support means no separate PNG needed for logos and graphics
- Animation support means you can ditch heavy GIFs
- Every modern browser (Chrome, Firefox, Safari, Edge) supports it now
❌ Cons
- Older software and some email clients still don't open WebP files
- Some CMS platforms and image editors need plugins or extra steps to handle it
- Re-encoding a JPEG to WebP can actually make it look worse if you're not careful
- Print shops and legacy workflows still expect JPEG
Step-by-Step
- Start with your original, highest-quality file: Never convert a compressed JPEG to WebP. You'll bake in the JPEG artifacts and then compress again. Common pitfall: people grab the 200KB file off their website and re-convert it. Dig up the original.
- Export at a slightly lower quality setting than you think: WebP holds up well at quality 75-80. Try 80 first, compare it to your JPEG at 90, and see if you can tell. Nine times out of ten, you can't. The pitfall here is being too conservative and ending up with a file that's barely smaller.
- Keep a JPEG fallback for anything critical: If you're running a business site and a broken image costs you money, use the `
` element to serve WebP with a JPEG backup. It's a few lines of HTML. The pitfall is assuming everyone's on a modern browser — most are, but not all.
Pro tip: If you've got a folder of images to convert, don't do them one at a time in an online tool. Batch tools and command-line utilities like cwebp will save you an afternoon. And if you need to upscale an image before compressing it, do that first — compressing a small image and then upscaling it looks terrible.
FAQ
Q: Is WebP better quality than JPEG?
A: At the same file size, yes, usually. At the same quality setting, WebP is smaller. Quality and size are two sides of the same coin here, so the honest answer is WebP gives you more quality per kilobyte.
Q: Should I convert all my website images to WebP?
A: For a modern site, yes — start with your largest images since those give the biggest savings. Keep JPEG copies of anything you might need to email or print. Tools like Squoosh or a batch converter make this painless.
Q: Does WebP work on iPhones and Safari?
A: Yes, since Safari 14 in 2020. Anyone on an iPhone from the last several years is fine. The holdouts are old desktop browsers and some email clients, not phones.
Q: How much smaller is WebP really?
A: Usually 25-35% smaller than JPEG at comparable quality. On some images it's closer to 20%, on others over 40%. Test your own files — the range is wider than most articles admit.
If you need to upscale a photo before compressing it, our free upscaler handles that without the usual blurry mess. And there's a whole pile of other free tools on the site if you're doing a batch of image work.